Linux random number generation (RNG) is often a source
of confusion to developers, but it is also a very integral part of the
security of the system. It provides random data to generate cryptographic
keys, TCP sequence numbers, and the like, so unpredictability as well as
very strong random numbers are required. When someone notices a flaw, or
a possible flaw in the RNG, kernel hackers take notice.
Recurring universally unique identifiers (UUIDs), as reported by the smolt hardware
profiler client program, had some worried about problems in the
kernel RNG. As it turns out, the problem exists in
the interaction between Fedora 8 LiveCD installations and smolt –
essentially the UUID came from the CD – but it sparked a discussion
leading to some possible improvements. Along the way, some common
misconceptions about kernel RNG were cleared up.
The kernel gathers information from external sources to provide input to
its entropy pool. This pool contains bits that have extremely strong
random properties, so long as unpredictable events (inter-keypress timings,
mouse movements, disk interrupts, etc.) are sampled. It provides direct
access to this pool via the /dev/random device. Reading from that
device will provide the strongest random numbers that Linux can offer
– depleting the entropy pool. When the entropy pool runs low,
reads to /dev/random block until there is sufficient entropy.
The alternative interface, the one that nearly all programs should
use, is /dev/urandom. Reading from that device will not block.
If sufficient entropy is available, it will provide random numbers just as
strong as /dev/random, if not, it uses the SHA cryptographic hash
algorithm to generate very strong random numbers.
Developers often overestimate how strong their random numbers need to be;
they also overestimate how easy "breaking" /dev/urandom would be,
which leads to programs that, unnecessarily, read /dev/random. Ted
Ts'o, who wrote the kernel RNG, puts it this way:
Past a certain point /dev/urandom will start returning results which
are cryptographically random. At that point, you are depending on the
strength of the SHA hash algorithm, and actually being able to not
just to find hash collisions, but being able to trivially find all or
most possible pre-images for a particular SHA hash algorithm. If that
were to happen, it's highly likely that all digital signatures and
openssh would be totally broken.
There is still a bit of hole in all of this: how does a freshly installed
system, with little or no user interaction, at least yet, get its initial
entropy? When Alan Cox and Mike McGrath started describing the smolt
problem, the immediate reaction was to look closely at how the entropy pool
was being initialized. While that turned out not to be the problem, it did
lead Matt Mackall, maintainer of the kernel RNG, to start thinking about better pool
initialization. Various ideas about mixing in data specific to the
host, like MAC address and PCI device characteristics were discussed.
As Ts'o points out, that will
help prevent things like UUID collisions, but it doesn't solve the problem
of predictability of the random numbers that will be generated by these
systems.
In order to do that we really do need to improve
the amount of hardware entropy we can mix into the system. This is a
hard problem, but as more people are relying on these facilities, it's
something we need to think about quite a bit more!
Linux provides random numbers suitable for nearly any purpose via
/dev/urandom. For the truly paranoid, there is also
/dev/random, but developers would do well to forget that device
exists for everything but the most critical needs. If one is generating a
large key pair, to use for the next century, using some data from
/dev/random is probably right. Anything with lower requirements
should seriously consider /dev/urandom.
Versions of the autofs automounter daemon as shipped by Red Hat (and possibly other distributors) are installed with an insecure configuration; in particular, the "hosts" map lacks the "nosuid" option, allowing an attacker who has control over an NFS server to run setuid programs on vulnerable systems.
Rafal Wojtczuk of McAfee AVERT Research discovered that e2fsprogs,
ext2 file system utilities and libraries, contained multiple
integer overflows in memory allocations, based on sizes taken directly
from filesystem information. These could result in heap-based
overflows potentially allowing the execution of arbitrary code.
An attacker could trigger one of the vulnerabilities by causing a Qt
application to parse specially crafted text or Unicode strings, which
may lead to the execution of arbitrary code with the privileges of the
user running the application.
Adriano Lima and Ramon de Carvalho Valle reported that functions
isc_attach_database() and isc_create_database() do not perform proper
boundary checking when processing their input.
A remote attacker could send specially crafted requests to the Firebird
server on TCP port 3050, possibly resulting in the execution of
arbitrary code with the privileges of the user running Firebird
(usually firebird).
The gss_userok function in appl/ftp/ftpd/gss_userok.c in Heimdal 0.7.2 does not allocate memory for the ticketfile pointer before calling free, which allows remote attackers to have an unknown impact via an invalid username. NOTE: the vulnerability was originally reported for ftpd.c, but this is incorrect.
The NFSv4 ID mapper (nfsidmap) before 0.17 does not properly handle return values from the getpwnam_r function when performing a username lookup, which can cause it to report a file as being owned by "root" instead of "nobody" if the file exists on the server but not on the client.
MySQL Community Server before 5.0.51, when a table relies on symlinks created through explicit DATA DIRECTORY and INDEX DIRECTORY options, allows remote authenticated users to overwrite system table information and gain privileges via a RENAME TABLE statement that changes the symlink to point to an existing file. (CVE-2007-5969)
MySQL Community Server before 5.0.45 does not require privileges such as SELECT for the source table in a CREATE TABLE LIKE statement, which allows remote authenticated users to obtain sensitive information such as the table structure. (CVE-2007-3781)
Cross-site scripting (XSS) vulnerability in Nagios 2.x before 2.10 allows remote attackers to inject arbitrary web script or HTML via unknown vectors to unspecified CGI scripts.
phpMyAdmin 2.9.1.1 allows remote attackers to obtain sensitive information
via a direct request for themes/darkblue_orange/layout.inc.php, which
reveals the path in an error message.
A format string vulnerability in the mdiag_initialize function in gtk/src/rbgtkmessagedialog.c in Ruby-GNOME 2 (aka Ruby/Gnome2) 0.16.0, and SVN versions before 20071127, allows context-dependent attackers to execute arbitrary code via format string specifiers in the message parameter.
A stack buffer overflow flaw was found in the way Samba authenticates
remote users. A remote unauthenticated user could trigger this flaw to
cause the Samba server to crash, or execute arbitrary code with the
permissions of the Samba server.
Several vulnerabilities have been identified in xfs, the X font
server. The QueryXBitmaps and QueryXExtents protocol requests suffer
from lack of validation of their 'length' parameters. Maliciously
crafted requests can either cause two different problems with both
requests:
* An integer overflow in the computation of the size of a dynamic
buffer can lead to a heap overflow in the build_range() function.
* An arbitrary number of bytes on the heap can be swapped by the
swap_char2b() function.
Bas van Schaik has found a privilege escalation in the agentd process
of the Zabbix network monitor application. Agentd can be used to run
user commands under the root account, leading to an escalation of
privilege.
Adobes acrobat reader has the following vulnerabilities:
The Adobe Reader Plugin has a cross site scripting vulnerability that
can be triggered by processes malformed URLs. Arbitrary JavaScript can
be served by a malicious web server, leading to a cross-site scripting
attack.
Maliciously crafted PDF files can be used to trigger two vulnerabilities,
if an attacker can trick a user into viewing the files, arbitrary code
can be executed with the user's privileges.
From the Mandriva advisory: "The recall_headers function in mod_mem_cache in Apache 2.2.4 does not
properly copy all levels of header data, which can cause Apache to
return HTTP headers containing previously-used data, which could be
used to obtain potentially sensitive information by unauthorized users."
The Apache HTTP Server did not verify that a process was an Apache child
process before sending it signals. A local attacker who has the ability to
run scripts on the Apache HTTP Server could manipulate the scoreboard and
cause arbitrary processes to be terminated, which could lead to a denial of
service. (CVE-2007-3304)
A flaw was found in the Apache HTTP Server mod_status module. Sites with
the server-status page publicly accessible and ExtendedStatus enabled were
vulnerable to a cross-site scripting attack. On Red Hat Enterprise Linux
the server-status page is not enabled by default and it is best practice to
not make this publicly available. (CVE-2006-5752)
From the Red Hat advisory: "A bug was found in Apache where an invalid Expect header sent to the server
was returned to the user in an unescaped error message. This could
allow an attacker to perform a cross-site scripting attack if a victim was
tricked into connecting to a site and sending a carefully crafted Expect
header."
cache_util.c in the mod_cache module in Apache HTTP Server (httpd), when caching is enabled and a threaded Multi-Processing Module (MPM) is used, allows remote attackers to cause a denial of service (child processing handler crash) via a request with the (1) s-maxage, (2) max-age, (3) min-fresh, or (4) max-stale Cache-Control headers without a value.
A flaw was found in the mod_proxy module. On sites where a reverse proxy is
configured, a remote attacker could send a carefully crafted request that
would cause the Apache child process handling that request to crash. On
sites where a forward proxy is configured, an attacker could cause a
similar crash if a user could be persuaded to visit a malicious site using
the proxy. This could lead to a denial of service if using a threaded
Multi-Processing Module. (CVE-2007-3847)
A flaw was found in the mod_autoindex module. On sites where directory
listings are used, and the AddDefaultCharset directive has been removed
from the configuration, a cross-site-scripting attack may be possible
against browsers which do not correctly derive the response character set
following the rules in RFC 2616. (CVE-2007-4465)
Tilghman Lesher discovered that the logging engine of Asterisk, a free
software PBX and telephony toolkit, performs insufficient sanitizing of
call-related data, which may lead to SQL injection.
A vulnerability in Cacti 0.8.6i and earlier versions allows remote
authenticated users to cause a denial of service (CPU consumption) via
large values of the graph_start, graph_end, graph_height, or graph_width
parameters.
Cairo has an integer overflow vulnerability in the PNG image processing
code. If a user processes a specially crafted PNG image with an
application that is linked against cairo, arbitrary code can be executed
with the user's privileges.
Multiple buffer overflows in Konst CenterICQ 4.9.11 through 4.21 allow
remote attackers to execute arbitrary code via unspecified vectors. NOTE:
the provenance of this information is unknown; the details are obtained
solely from third party information. NOTE: this might overlap
CVE-2007-0160.
A NULL pointer dereference has been discovered in the RAR VM of Clam
Antivirus (ClamAV) which allows user-assisted remote attackers to
cause a denial of service via a specially crafted RAR archives.
Several remote vulnerabilities have been discovered in the Clam anti-virus
toolkit. The Common Vulnerabilities and Exposures project identifies the
following problems:
CVE-2007-4510:
It was discovered that the RTF and RFC2397 parsers can be tricked
into dereferencing a NULL pointer, resulting in denial of service.
CVE-2007-4560:
It was discovered clamav-milter performs insufficient input
sanitizing, resulting in the execution of arbitrary shell commands.
Richard Harms discovered that cpio did not sufficiently validate file
properties when creating archives. Files with e. g. a very large size
caused a buffer overflow. By tricking a user or an automatic backup
system into putting a specially crafted file into a cpio archive, a
local attacker could probably exploit this to execute arbitrary code
with the privileges of the target user (which is likely root in an
automatic backup system).
The Vixie cron daemon does not check the return code from setuid(); if that call can be made to fail, a local attacker may be able to execute commands as root.
Will Drewry of the Google Security Team discovered several buffer overflows
in cscope, a source browsing tool, which might lead to the execution of
arbitrary code.
A buffer overflow in Cscope 15.5, and possibly multiple overflows, allows
remote attackers to execute arbitrary code via a C file with a long
#include line that is later browsed by the target.
Previous versions of the cups package could be forced to hang via a client
"partially negotiating" an ssl connection. In this state, cups would not
allow other connections to be made, a denial of service.
Thomas de Grenier de Latour discovered that the checkrestart program included
in debian-goodies did not correctly handle shell meta-characters. A local
attacker could exploit this to gain the privileges of the user running
checkrestart.
The internationalization (i18n) framework in Django 0.91, 0.95, 0.95.1, and 0.96, and as used in other products such as PyLucid, when the USE_I18N option and the i18n component are enabled, allows remote attackers to cause a denial of service (memory consumption) via many HTTP requests with large Accept-Language headers.
From the rPath advisory: "Previous versions of the dovecot package are vulnerable to a
minor privilege escalation attack in which an authenticated
user may exploit an ACL plugin weakness to save message flags
without having proper permissions."
Directory traversal vulnerability in index/mbox/mbox-storage.c in Dovecot
before 1.0.rc29, when using the zlib plugin, allows remote attackers to
read arbitrary gzipped (.gz) mailboxes (mbox files) via a .. (dot dot)
sequence in the mailbox name.
A stack-based buffer overflow in mod/server.mod/servrmsg.c in Eggdrop
1.6.18, and possibly earlier, allows user-assisted, malicious remote IRC
servers to execute arbitrary code via a long private message.
Arnaud Giersch discovered that elinks incorrectly attempted to load
gettext catalogs from a relative path. If a user were tricked into
running elinks from a specific directory, a local attacker could execute
code with user privileges.
The elinks text-mode browser has an arbitrary file access vulnerability
in the Elinks SMB protocol handler. If a user can be tricked into
visiting a specially crafted web page, arbitrary files may be read or
written with the user's permissions.
From the original Debian problem report: "In Debian's version of GNU Emacs 22.1+1-2, the `hack-local-variables'
function does not behave correctly when `enable-local-variables' is
set to :safe. The documentation of `enable-local-variables' states
that the value :safe means to set only safe variables, as determined
by `safe-local-variable-p' and `risky-local-variable-p' (and the data
driving them), but Emacs ignores this and instead sets all the local
variables." When this setting (which is not the default) is in effect, opening a hostile file could lead to the execution of arbitrary commands.
A format string error in the "write_html()" function in calendar/gui/
e-cal-component-memo-preview.c when displaying a memo's categories can
potentially be exploited to execute arbitrary code via a specially crafted
shared memo containing format specifiers.
The APOP protocol allows remote attackers to guess the first 3 characters
of a password via man-in-the-middle (MITM) attacks that use crafted message
IDs and MD5 collisions. NOTE: this design-level issue potentially affects
all products that use APOP, including (1) Thunderbird, (2) Evolution, (3)
mutt, and (4) fetchmail.
fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service (NULL dereference and application crash) by refusing certain warning messages that are sent over SMTP.
The Firebird DBMS has a buffer overflow vulnerability involving
the processing of connect requests with an overly large p_cnct_count
value. Remote attackers can send a specially crafted
request to the server in order to potentially execute arbitrary code with
the permissions of the Firebird user.
A flaw was discovered in handling of "about:blank" windows used by
addons. A malicious web site could exploit this to modify the contents,
or steal confidential data (such as passwords), of other web pages.
(CVE-2007-3844)
Jesper Johansson discovered that spaces and double-quotes were
not correctly handled when launching external programs. In rare
configurations, after tricking a user into opening a malicious web page,
an attacker could execute helpers with arbitrary arguments with the
user's privileges. (CVE-2007-3845)
A cross-site scripting flaw was found in the way Firefox handled the
jar: URI scheme. It was possible for a malicious website to leverage this
flaw and conduct a cross-site scripting attack against a user running
Firefox. (CVE-2007-5947)
Several flaws were found in the way Firefox processed certain malformed web
content. A webpage containing malicious content could cause Firefox to
crash, or potentially execute arbitrary code as the user running Firefox.
(CVE-2007-5959)
A race condition existed when Firefox set the "window.location" property
for a webpage. This flaw could allow a webpage to set an arbitrary Referer
header, which may lead to a Cross-site Request Forgery (CSRF) attack
against websites that rely only on the Referer header for protection.
(CVE-2007-5960)
shutdown and moz_bug_r_a4 reported two separate ways to modify an
XPCNativeWrapper such that subsequent access by the browser would result in
executing user-supplied code. (CVE-2007-3738)
Michal Zalewski reported that it was possible to bypass the same-origin
checks and read from cached (wyciwyg) documents It is possible to access
wyciwyg:// documents without proper same domain policy checks through the
use of HTTP 302 redirects. This enables the attacker to steal sensitive
data displayed on dynamically generated pages; perform cache poisoning; and
execute own code or display own content with URL bar and SSL certificate
data of the attacked page (URL spoofing++). (CVE-2007-3656)
Internet Explorer calls registered URL protocols without escaping quotes
and may be used to pass unexpected and potentially dangerous data to the
application that registers that URL Protocol. (CVE-2007-3670)
Ronald van den Heetkamp reported that a filename URL containing %00
(encoded null) can cause Firefox to interpret the file extension
differently than the underlying Windows operating system potentially
leading to unsafe actions such as running a program. This is only
accessible locally. (CVE-2007-3285)
An attacker can use an element outside of a document to call an event
handler allowing content to run arbitrary code with chrome
privileges. (CVE-2007-3737)
Ronen Zilberman and Michal Zalewski both reported that it was possible to
exploit a timing issue to inject content into about:blank frames in a
page. When opening a window from a script, it is possible to spoof the
content of the newly opened window's frames within a short time frame,
while the window is loading. (CVE-2007-3089)
Mozilla contributor moz_bug_r_a4 demonstrated that the methods
addEventListener and setTimeout could be used to inject script into another
site in violation of the browser's same-origin policy. This could be used
to access or modify private or valuable information from that other
site. (CVE-2007-3736)
As part of the Firefox 2.0.0.5 update releases Mozilla developers fixed
many bugs to improve the stability of the product. Some of these crashes
that showed evidence of memory corruption under certain circumstances and
we presume that with enough effort at least some of these could be
exploited to run arbitrary code. Note: Thunderbird shares the browser
engine with Firefox and could be vulnerable if JavaScript were to be
enabled in mail. This is not the default setting and we strongly discourage
users from running JavaScript in mail. Without further investigation we
cannot rule out the possibility that for some of these an attacker might be
able to prepare memory for exploitation through some means other than
JavaScript, such as large images. (CVE-2007-3734, CVE-2007-3735)
A security flaw was found in the way flac processed audio data. An
attacker could create a carefully crafted FLAC audio file in such a way that
it could cause an application linked with flac libraries to crash or execute
arbitrary code when it was opened. (CVE-2007-4619)
The Freetype font rendering library versions 2.3.4 and below
has an integer sign error. Remote attackers may be able to
create a specially crafted TrueType Font file with a negative
n_points value that will cause an integer overflow and heap-based
buffer overflow, allowing the execution of arbitrary code.
The FreeType library has several integer overflow vulnerabilities.
If a user can be tricked into installing a specially
crafted font file, arbitrary code can be executed with the privilege
of the user.
The fastjar utility found in the GNU compiler collection does not perform adequate file path checking, allowing the creation or overwriting of files outside of the current directory tree.
The gd graphics library contains a buffer overflow which could enable a remote attacker to execute arbitrary code. Note that various other packages include code from gd and could also be vulnerable.
Integer overflow in gdImageCreateTrueColor function in the GD Graphics
Library (libgd) before 2.0.35 allows user-assisted remote attackers
to have unspecified remote attack vectors and impact. (CVE-2007-3472)
The gdImageCreateXbm function in the GD Graphics Library (libgd)
before 2.0.35 allows user-assisted remote attackers to cause a denial
of service (crash) via unspecified vectors involving a gdImageCreate
failure. (CVE-2007-3473)
Multiple unspecified vulnerabilities in the GIF reader in the
GD Graphics Library (libgd) before 2.0.35 allow user-assisted
remote attackers to have unspecified attack vectors and
impact. (CVE-2007-3474)
The GD Graphics Library (libgd) before 2.0.35 allows user-assisted
remote attackers to cause a denial of service (crash) via a GIF image
that has no global color map. (CVE-2007-3475)
Array index error in gd_gif_in.c in the GD Graphics Library (libgd)
before 2.0.35 allows user-assisted remote attackers to cause
a denial of service (crash and heap corruption) via large color
index values in crafted image data, which results in a segmentation
fault. (CVE-2007-3476)
The (a) imagearc and (b) imagefilledarc functions in GD Graphics
Library (libgd) before 2.0.35 allows attackers to cause a denial
of service (CPU consumption) via a large (1) start or (2) end angle
degree value. (CVE-2007-3477)
Race condition in gdImageStringFTEx (gdft_draw_bitmap) in gdft.c in the
GD Graphics Library (libgd) before 2.0.35 allows user-assisted remote
attackers to cause a denial of service (crash) via unspecified vectors,
possibly involving truetype font (TTF) support. (CVE-2007-3478)
Libgd2 has a denial of service vulnerability involving the incorrect
validation of PNG callback results. If an application that is linked
against libgd2 is used to process a specially-crafted PNG file,
a denial of service involving CPU resource consumption can be
caused.
A format string vulnerability has been discovered in gedit. Calling
the program with specially crafted file names caused a buffer
overflow, which could be exploited to execute arbitrary code with the
privileges of the gedit user.
Kalle Olavi Niemitalo discovered two boundary errors in fsplib code
included in gFTP when processing overly long directory or file names. A
remote attacker could trigger these vulnerabilities by enticing a user to
download a file with a specially crafted directory or file name, possibly
resulting in the execution of arbitrary code (CVE-2007-3962) or a Denial of
Service (CVE-2007-3961).
The gimp image editor has several vulnerabilities, including
a problem where it can open PSD files with excessive dimensions
and a possible stack overflow in the Sunras loader.
Jens Askengren discovered that gnome-screensaver became confused when
running under Compiz, and could lose keyboard lock focus. A local
attacker could exploit this to bypass the user's locked screen saver.
Tavis Ormandy of the Google Security Team discovered two denial of service
flaws in the way gzip expanded archive files. If a victim expanded a
specially crafted archive, it could cause the gzip executable to hang or
crash.
Tavis Ormandy of the Google Security Team discovered several code execution
flaws in the way gzip expanded archive files. If a victim expanded a
specially crafted archive, it could cause the gzip executable to crash or
execute arbitrary code.
Kronolith contains a mistake in lib/FBView.php where a raw, unfiltered
string is used instead of a sanitized string to view local files. An
authenticated attacker could craft an HTTP GET request that uses directory
traversal techniques to execute any file on the web server as PHP code,
which could allow information disclosure or arbitrary code execution with
the rights of the user running the PHP application (usually the webserver
user).
Kees Cook discovered a flaw in the way the hplip hpssd daemon handled user
input. A local attacker could send a specially crafted request to the hpssd
daemon, possibly allowing them to run arbitrary commands as the root user.
The htsearch component in htdig 3.2.0b6 is vulnerable to a cross-site scripting
attack.
Attackers can inject web scripts and HTML code using the sort parameter.
The ImageMagick image decoders have multiple vulnerabilities.
If a user can be tricked into processing a specially crafted
DCM, DIB, XBM, XCF, or XWD image, arbitrary code may be executed with
the user's privileges.
Multiple integer overflows in ImageMagick before 6.3.3-5 allow remote
attackers to execute arbitrary code via (1) a crafted DCM image, which
results in a heap-based overflow in the ReadDCMImage function, or (2) the
(a) colors or (b) comments field in a crafted XWD image, which results in a
heap-based overflow in the ReadXWDImage function, different issues than
CVE-2007-1667.
A vulnerability has been reported in inotify-tools, which can potentially be
exploited by malicious users to compromise an application using the library.
Successful exploitation may allow the execution of arbitrary code with
privileges of the application using the affected library.
NOTE: The programs shipped with inotify-tools are reportedly not affected.
The vulnerability is reported in versions prior to 3.11.
The jpc_qcx_getcompparms function in jpc/jpc_cs.c could allow remote
user-assisted attackers to cause a denial of service (crash) and possibly
corrupt the heap via malformed image files.
java has multiple vulnerabilities, these include:
an RSA exponent padding attack vulnerability, two vulnerabilities
which allow untrusted applets to access data in other applets,
vulnerabilities that involve applets gaining privileges due to
serialization bugs in the JRE and buffer overflows in the java image
handling routines that can give attackers read/write/execute capabilities
for local files.
The Javadoc tool was able to generate HTML documentation pages that
contained cross-site scripting (XSS) vulnerabilities. A remote attacker
could use this to inject arbitrary web script or HTML. (CVE-2007-3503)
The Java Web Start URL parsing component contained a buffer overflow
vulnerability within the parsing code for JNLP files. A remote attacker
could create a malicious JNLP file that could trigger this flaw and execute
arbitrary code when opened. (CVE-2007-3655)
The JSSE component did not correctly process SSL/TLS handshake requests. A
remote attacker who is able to connect to a JSSE-based service could
trigger this flaw leading to a denial-of-service. (CVE-2007-3698)
A flaw was found in the applet class loader. An untrusted applet could use
this flaw to circumvent network access restrictions, possibly connecting to
services hosted on the machine that executed the applet. (CVE-2007-3922)
Sun Java Runtime Environment (JRE) in JDK and JRE 6 Update 2 and earlier,
JDK and JRE 5.0 Update 12 and earlier, SDK and JRE 1.4.2_15 and earlier,
and SDK and JRE 1.3.1_20 and earlier, when applet caching is enabled,
allows remote attackers to violate the security model for an applet's
outbound connections via a DNS rebinding attack. (CVE-2007-5232)
Java Web Start in Sun JDK and JRE 6 Update 2 and earlier, JDK and JRE 5.0
Update 12 and earlier, and SDK and JRE 1.4.2_15 and earlier does not
properly enforce access restrictions for untrusted applications, which
allows user-assisted remote attackers to obtain sensitive information (the
Java Web Start cache location) via an untrusted application, aka "three
vulnerabilities." (CVE-2007-5238)
Java Web Start in Sun JDK and JRE 6 Update 2 and earlier, JDK and JRE 5.0
Update 12 and earlier, SDK and JRE 1.4.2_15 and earlier, and SDK and JRE
1.3.1_20 and earlier does not properly enforce access restrictions for
untrusted (1) applications and (2) applets, which allows user-assisted
remote attackers to copy or rename arbitrary files when local users perform
drag-and-drop operations from the untrusted application or applet window
onto certain types of desktop applications. (CVE-2007-5239)
Visual truncation vulnerability in the Java Runtime Environment in Sun JDK
and JRE 6 Update 2 and earlier, JDK and JRE 5.0 Update 12 and earlier, SDK
and JRE 1.4.2_15 and earlier, and SDK and JRE 1.3.1_20 and earlier allows
remote attackers to circumvent display of the untrusted-code warning banner
by creating a window larger than the workstation screen. (CVE-2007-5240)
Sun Java Runtime Environment (JRE) in JDK and JRE 6 Update 2 and earlier,
JDK and JRE 5.0 Update 12 and earlier, SDK and JRE 1.4.2_15 and earlier,
and SDK and JRE 1.3.1_20 and earlier, when an HTTP proxy server is used,
allows remote attackers to violate the security model for an applet's
outbound connections via a multi-pin DNS rebinding attack in which the
applet download relies on DNS resolution on the proxy server, but the
applet's socket operations rely on DNS resolution on the local machine, a
different issue than CVE-2007-5274. NOTE: this is similar to
CVE-2007-5232. (CVE-2007-5273)
Sun Java Runtime Environment (JRE) in JDK and JRE 6 Update 2 and earlier,
JDK and JRE 5.0 Update 12 and earlier, SDK and JRE 1.4.2_15 and earlier,
and SDK and JRE 1.3.1_20 and earlier, when Firefox or Opera is used, allows
remote attackers to violate the security model for JavaScript outbound
connections via a multi-pin DNS rebinding attack dependent on the
LiveConnect API, in which JavaScript download relies on DNS resolution by
the browser, but JavaScript socket operations rely on separate DNS
resolution by a Java Virtual Machine (JVM), a different issue than
CVE-2007-5273. NOTE: this is similar to CVE-2007-5232. (CVE-2007-5274)
An integer overflow vulnerability exists in the embedded ICC profile
image parser (CVE-2007-2788), an unspecified vulnerability exists in
the font parsing implementation (CVE-2007-4381), and an error exists
when processing XSLT stylesheets contained in XSLT Transforms in XML
signatures (CVE-2007-3716), among other vulnerabilities.
Kate / Kwrite, as shipped with KDE 3.2.x up to including 3.4.0, creates a file backup before saving a modified file. These backup files are created with default permissions, even if the original file had more strict permissions set. See this advisory for more information.
The IA32 system call emulation functionality in Linux kernel 2.4.x and
2.6.x before 2.6.22.7, when running on the x86_64 architecture, does not
zero extend the eax register after the 32bit entry path to ptrace is used,
which might allow local users to gain privileges by triggering an
out-of-bounds access to the system call table using the %RAX register.
The snd_mem_proc_read function in sound/core/memalloc.c in the Advanced
Linux Sound Architecture (ALSA) in the Linux kernel before 2.6.22.8 does
not return the correct write size, which allows local users to obtain
sensitive information (kernel memory contents) via a small count argument,
as demonstrated by multiple reads of /proc/driver/snd-page-alloc.
Sridhar Samudrala discovered a local denial of service vulnerability
in the handling of SCTP sockets. By opening such a socket with a
special SO_LINGER value, a local attacker could exploit this to crash
the kernel. (CVE-2006-4535)
Kirill Korotaev discovered that the ELF loader on the ia64 and sparc
platforms did not sufficiently verify the memory layout. By attempting
to execute a specially crafted executable, a local user could exploit
this to crash the kernel. (CVE-2006-4538)
The netlink protocol has an infinite recursion bug that allows users to
cause a kernel crash. Also the IPv6 protocol allows remote attackers to
cause a denial of service via crafted IPv6 type 0 route headers
(IPV6_RTHDR_TYPE_0) that create network amplification between two routers.
The Minix filesystem code in Linux kernel 2.6.x up to 2.6.18, and possibly
other versions, allows local users to cause a denial of service (hang) via
a malformed minix file stream that triggers an infinite loop in the
minix_bmap function. NOTE: this issue might be due to an integer overflow
or signedness error.
Integer underflow in the ieee80211_rx function in
net/ieee80211/ieee80211_rx.c in the Linux kernel 2.6.x before 2.6.23 allows
remote attackers to cause a denial of service (crash) via a crafted SKB
length value in a runt IEEE 802.11 frame when the IEEE80211_STYPE_QOS_DATA
flag is set, aka an "off-by-two error."
Ilja van Sprundel discovered that Bluetooth setsockopt calls could leak
kernel memory contents via an uninitialized stack buffer. A local attacker
could exploit this flaw to view sensitive kernel information.
(CVE-2007-1353)
The GEODE-AES driver did not correctly initialize its encryption key.
Any data encrypted using this type of device would be easily compromised.
(CVE-2007-2451)
The random number generator was hashing a subset of the available
entropy, leading to slightly less random numbers. Additionally, systems
without an entropy source would be seeded with the same inputs at boot
time, leading to a repeatable series of random numbers. (CVE-2007-2453)
The wait_task_stopped function in the Linux kernel before 2.6.23.8 checks a TASK_TRACED bit instead of an exit_state value, which allows local users to cause a denial of service (machine crash) via unspecified vectors.
The tcp_sacktag_write_queue function in net/ipv4/tcp_input.c in Linux kernel 2.6.21 through 2.6.23.7, and 2.6.24-rc through 2.6.24-rc2, allows remote attackers to cause a denial of service (crash) via crafted ACK responses that trigger a NULL pointer dereference.
Previous versions of the kernel package are subject to several
vulnerabilities. Certain malformed UDF filesystems can cause the system to
crash (denial of service). Malformed CDROM firmware or USB storage devices
(such as USB keys) could cause system crash (denial of service), and if
they were intentionally malformed, can cause arbitrary code to run with
elevated privileges. In addition, the SCTP protocol is subject to a remote
system crash (denial of service) attack.
A typo in Linux kernel 2.6 before 2.6.21-rc6 and 2.4 before 2.4.35 causes
RTA_MAX to be used as an array size instead of RTN_MAX, which leads to an
"out of bound access" by the (1) dn_fib_props (dn_fib.c, DECNet) and (2)
fib_props (fib_semantics.c, IPv4) functions. (CVE-2007-2172)
mm/mmap.c in the hugetlb kernel, when run on PowerPC systems, does not
prevent stack expansion from entering into reserved kernel page memory,
which allows local users to cause a denial of service (OOPS) via
unspecified vectors. (CVE-2007-3739)
The (1) aac_cfg_open and (2) aac_compat_ioctl functions in the SCSI layer
ioctl path in aacraid in the Linux kernel before 2.6.23-rc2 do not check
permissions for ioctls, which might allow local users to cause a denial of
service or gain privileges. (CVE-2007-4308)
Multiple buffer overflows in CIFS VFS in Linux kernel 2.6.23 and earlier
allows remote attackers to cause a denial of service (crash) and possibly
execute arbitrary code via long SMB responses that trigger the overflows in
the SendReceive function.
A security issue has been reported in Linux kernel due to an error in
drivers/isdn/i4l/isdn_ppp.c as the "isdn_ppp_ccp_reset_alloc_state()"
function never initializes an event timer before scheduling it with the
"add_timer()" function.
The mincore function in the kernel does not properly lock access to user
space, which has unspecified impact and attack vectors, possibly related to
a deadlock.
Another vulnerability has been reported in Linux kernel caused by a
boundary error within the handling of incoming CAPI messages in
net/bluetooth/cmtp/capi.c. This can be exploited to overwrite certain
Kernel data structures.
The drm/i915 component in the Linux kernel before 2.6.22.2, when used with
i965G and later chipsets, allows local users with access to an X11 session
and Direct Rendering Manager (DRM) to write to arbitrary memory locations
and gain privileges via a crafted batchbuffer. (CVE-2007-3851)
Linux kernel 2.4.35 and other versions allows local users to send arbitrary
signals to a child process that is running at higher privileges by causing
a setuid-root parent process to die, which delivers an attacker-controlled
parent process death signal (PR_SET_PDEATHSIG). (CVE-2007-3848)
Stack-based buffer overflow in the random number generator (RNG)
implementation in the Linux kernel before 2.6.22 might allow local root
users to cause a denial of service or gain privileges by setting the
default wakeup threshold to a value greater than the output pool size,
which triggers writing random numbers to the stack by the pool transfer
function involving "bound check ordering". NOTE: this issue might only
cross privilege boundaries in environments that have granular assignment of
privileges for root. (CVE-2007-3105)
The sysfs_readdir function in the Linux kernel 2.6 allows local users to
cause a denial of service (kernel OOPS) by dereferencing a null pointer to
an inode in a dentry. (CVE-2007-3104)
The CIFS filesystem, when Unix extension support is enabled, did not honor
the umask of a process, which allowed local users to gain
privileges.(CVE-2007-3740)
The Linux kernel checked the wrong global variable for the CIFS sec mount
option, which might allow remote attackers to spoof CIFS network traffic
that the client configured for security signatures, as demonstrated by lack
of signing despite sec=ntlmv2i in a SetupAndX request. (CVE-2007-3843)
Buffer overflow in the isdn_net_setcfg function in isdn_net.c in the Linux
kernel allowed local users to have an unknown impact via a crafted argument
to the isdn_ioctl function. (CVE-2007-6063)
David Coffey discovered an uninitialized pointer free flaw in the
RPC library used by kadmind. A remote unauthenticated attacker who
could access kadmind could trigger the flaw causing kadmind to crash
or possibly execute arbitrary code (CVE-2007-2442).
David Coffey also discovered an overflow flaw in the same RPC library.
A remote unauthenticated attacker who could access kadmind could
trigger the flaw causing kadmind to crash or possibly execute arbitrary
code (CVE-2007-2443).
Finally, a stack buffer overflow vulnerability was found in kadmind
that allowed an unauthenticated user able to access kadmind the
ability to trigger the vulnerability and possibly execute arbitrary
code (CVE-2007-2798).
The kdamind daemon can, in some situations, perform operations on uninitialized pointers. This bug could conceivably open up the system to a code execution attack by an unauthenticated remote attacker, but it appears to be difficult to exploit. See this advisory for details.
Some kerberos applications fail to check the results of setuid() calls, with the result that, if that call fails, they could continue to execute as root after thinking they had switched to a nonprivileged user. A local attacker who can cause these calls to fail (through resource exhaustion, presumably) could exploit this bug to gain root privileges.
Tenable Network Security discovered a stack buffer overflow flaw in the RPC
library used by kadmind. A remote unauthenticated attacker who can access
kadmind could trigger this flaw and cause kadmind to crash.
Garrett Wollman discovered an uninitialized pointer flaw in kadmind. A
remote unauthenticated attacker who can access kadmind could trigger this
flaw and cause kadmind to crash.
A flaw was found in the username handling of the MIT krb5 telnet daemon
(telnetd). A remote attacker who can access the telnet port of a target
machine could log in as root without requiring a password. MIT krb5 Security Advisory 2007-001
Buffer overflows were found which affect the Kerberos KDC and the kadmin
server daemon. A remote attacker who can access the KDC could exploit this
bug to run arbitrary code with the privileges of the KDC or kadmin server
processes. MIT krb5 Security Advisory
2007-002
Stefan Cornelius from Secunia Research discovered that the
"parseIrcUrl()" function in file src/kvirc/kernel/kvi_ircurl.cpp does
not properly sanitize parts of the URI when building the command for
KVIrc's internal script system.
Stack-based buffer overflow in Little CMS (lmcs) before 1.15 allows remote
attackers to execute arbitrary code or cause a denial of service
(application crash) via a crafted ICC profile in a JPG file.
mirror --script in lftp before 3.5.9 does not properly quote shell
metacharacters, which might allow remote user-assisted attackers to execute
shell commands via a malicious script. NOTE: it is not clear whether this
issue crosses security boundaries, since the script already supports
commands such as "get" which could overwrite executable files.
libarchive, a library for manipulating different streaming archive
formats, has a number of pax extension header vulnerabilities.
These may be used to cause a denial of service or for the execution
of arbitrary code.
Integer overflow in the exif_data_load_data_entry function in exif-data.c
in libexif before 0.6.14 allows user-assisted remote attackers to cause a
denial of service (crash) or possibly execute arbitrary code via crafted
EXIF data, involving the (1) doff or (2) s variable.
Luigi Auriemma has reported various boundary errors in load_it.cpp and
a boundary error in the "CSoundFile::ReadSample()" function in
sndfile.cpp. A remote attacker can entice a user to read crafted modules
or ITP files, which may trigger a buffer overflow resulting in the
execution of arbitrary code with the privileges of the user running the
application.
Certain chunk handlers in libpng before 1.0.29 and 1.2.x before 1.2.21
allow remote attackers to cause a denial of service (crash) via crafted (1)
pCAL (png_handle_pCAL), (2) sCAL (png_handle_sCAL), (3) tEXt
(png_push_read_tEXt), (4) iTXt (png_handle_iTXt), and (5) ztXT
(png_handle_ztXt) chunking in PNG images, which trigger out-of-bounds read
operations. (CVE-2007-5269)
pngrtran.c in libpng before 1.0.29 and 1.2.x before 1.2.21 use (1) logical
instead of bitwise operations and (2) incorrect comparisons, which might
allow remote attackers to cause a denial of service (crash) via a crafted
PNG image. (CVE-2007-5268)
Off-by-one error in ICC profile chunk handling in the png_set_iCCP function
in pngset.c in libpng before 1.2.22 beta1 allows remote attackers to cause
a denial of service (crash) via a crafted PNG image, due to an incorrect
fix for CVE-2007-5266. (CVE-2007-5267)
Off-by-one error in ICC profile chunk handling in the png_set_iCCP function
in pngset.c in libpng before 1.0.29 beta1 and 1.2.x before 1.2.21 beta1
allows remote attackers to cause a denial of service (crash) via a crafted
PNG image that prevents a name field from being NULL terminated.
(CVE-2007-5266)
In pngrutil.c, the function png_decompress_chunk() allocates
insufficient space for an error message, potentially overwriting stack
data, leading to a buffer overflow.
A heap based buffer overflow bug was found in the way libpng strips alpha
channels from a PNG image. An attacker could create a carefully crafted PNG
image file in such a way that it could cause an application linked with
libpng to crash or execute arbitrary code when the file is opened by a
victim.
Heap-based buffer overflow in libsndfile 1.0.17 and earlier might allow
remote attackers to execute arbitrary code via a FLAC file with crafted PCM
data containing a block with a size that exceeds the previous block size.
The t2p_write_pdf_string function in libtiff 3.8.2 and earlier is vulnerable
to a buffer overflow. Attackers can use a TIFF file with UTF-8 characters
in the DocumentName tag to overflow a buffer, causing a denial of service,
and possibly the execution of arbitrary code.
libvorbis has a number of vulnerabilities that can be triggered by
opening a specially crafted Ogg file. Vulnerabilities include
crashing and the execution of arbitrary code.
Yuuichi Teranishi discovered a flaw in libxml2 versions prior to 2.6.6.
When fetching a remote resource via FTP or HTTP, libxml2 uses special
parsing routines. These routines can overflow a buffer if passed a very
long URL. If an attacker is able to find an application using libxml2 that
parses remote resources and allows them to influence the URL, then this
flaw could be used to execute arbitrary code.
libxml2 prior to version 2.6.14 has multiple buffer overflow
vulnerabilities, if a local user passes a specially crafted
FTP URL, arbitrary code may be executed.
The lighttpd web server has multiple vulnerabilities involving
a remote access-control setting circumvention that is performed
by the sending of malformed requests. This can be used to crash
the server and cause a denial of service.
Stack-based buffer overflow in the separate_word function in tokenize.c in
Link Grammar 4.1b and possibly other versions, as used in AbiWord Link
Grammar 4.2.4, allows remote attackers to execute arbitrary code via a long
word, as reachable through the separate_sentence function.
Neel Mehta and Ryan Smith discovered that the VMWare Player DHCP server
did not correctly handle certain packet structures. Remote attackers
could send specially crafted packets and gain root privileges.
(CVE-2007-0061, CVE-2007-0062, CVE-2007-0063)
Rafal Wojtczvk discovered multiple memory corruption issues in VMWare
Player. Attackers with administrative privileges in a guest operating
system could cause a denial of service or possibly execute arbitrary
code on the host operating system. (CVE-2007-4496, CVE-2007-4497)
Tatsuya Kinoshita discovered that Lookup, a search interface to electronic
dictionaries on emacsen, creates a temporary file in an insecure fashion
when the ndeb-binary feature is used, which allows a local attacker to
craft a symlink attack to overwrite arbitrary files.
An arbitrary command execute bug was found in the lynx "lynxcgi:" URI
handler. An attacker could create a web page redirecting to a malicious URL
which could execute arbitrary code as the user running lynx.
The MadWifi driver for Atheros Wireless Lan cards
does not process beacon frames correctly. This can be
used by a remote attacker to cause a denial of service.
CVE-2007-4542: Multiple cross-site scripting (XSS) vulnerabilities in MapServer before 4.10.3 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors involving the (1) processLine function in maptemplate.c and the (2) writeError function in mapserv.c in the mapserv CGI program.
CVE-2007-4629: Buffer overflow in the processLine function in maptemplate.c in MapServer before 4.10.3 allows attackers to cause a denial of service and possibly execute arbitrary code via a mapfile with a long layer name, group name, or metadata entry name.
From the Red Hat advisory: "Versions of mod_jk before 1.2.23 decoded request URLs by default inside
Apache httpd and forwarded the encoded URL to Tomcat, which itself did a
second decoding. If Tomcat was used behind mod_jk and configured to only
proxy some contexts, an attacker could construct a carefully crafted HTTP
request to work around the context restriction and potentially access
non-proxied content."
A flaw was discovered in MoinMoin's error reporting when using the
AttachFile action. By tricking a user into viewing a crafted MoinMoin
URL, an attacker could execute arbitrary JavaScript as the current
MoinMoin user, possibly exposing the user's authentication information
for the domain where MoinMoin was hosted.
A cross-site scripting (XSS) vulnerability in index.php in Moodle 1.7.1
allows remote attackers to inject arbitrary web script or HTML via a style
expression in the search parameter.
MPlayer versions up to 1.0rc1 have a buffer overflow in the
loader/dmo/DMO_VideoDecoder.c DMO_VideoDecoder_Open function.
user-assisted remote attackers can use this to create a buffer overflow
and possibly execute arbitrary code.
The convert_search_mode_to_innobase function in ha_innodb.cc in the InnoDB engine in MySQL 5.1.23-BK and earlier allows remote authenticated users to cause a denial of service (database crash) via a certain CONTAINS operation on an indexed column, which triggers an assertion error.
MySQL subselect queries using "ORDER BY" can be used by an attacker with
access to a MySQL instance in order to create an intermittent denial
of service.
Jean-David Maillefer discovered a format string bug in the
date_format() function's error reporting. By calling the function with
invalid arguments, an authenticated user could exploit this to crash
the server.
MySQL 4.1 before 4.1.21 and 5.0 before 5.0.24 allows a local user to access
a table through a previously created MERGE table, even after the user's
privileges are revoked for the original table, which might violate intended
security policy (CVE-2006-4031).
MySQL 4.1 before 4.1.21, 5.0 before 5.0.25, and 5.1 before 5.1.12, when run
on case-sensitive filesystems, allows remote authenticated users to create
or access a database when the database name differs only in case from a
database for which they have permissions (CVE-2006-4226).
MySQL 5.0.18 and earlier allows local users to bypass logging mechanisms
via SQL queries that contain the NULL character, which are not properly
handled by the mysql_real_query function. NOTE: this issue was originally
reported for the mysql_query function, but the vendor states that since
mysql_query expects a null character, this is not an issue for mysql_query.
The in_decimal::set function in item_cmpfunc.cc in MySQL before 5.0.40, and
5.1 before 5.1.18-beta, allows context-dependent attackers to cause a
denial of service (crash) via a crafted IF clause that results in a
divide-by-zero error and a NULL pointer dereference. (CVE-2007-2583)
MySQL before 4.1.23, 5.0.x before 5.0.42, and 5.1.x before 5.1.18 does not
require the DROP privilege for RENAME TABLE statements, which allows remote
authenticated users to rename arbitrary tables. (CVE-2007-2691)
The mysql_change_db function in MySQL 5.0.x before 5.0.40 and 5.1.x before
5.1.18 does not restore THD::db_access privileges when returning from SQL
SECURITY INVOKER stored routines, which allows remote authenticated users
to gain privileges. (CVE-2007-2692)
MySQL Community Server before 5.0.45 allows remote authenticated users to
gain update privileges for a table in another database via a view that
refers to this external table. (CVE-2007-3782)
Buffer overflow in the redir function in check_http.c in Nagios Plugins
before 1.4.10 allows remote web servers to execute arbitrary code via long
Location header responses (redirects).
Buffer overflow in the check_snmp function in Nagios Plugins (nagios-plugins) 1.4.10 allows remote attackers to cause a denial of service (crash) via crafted snmpget replies.
Kurt Fitzner discovered that the NBD (network block device) server did not
correctly verify the maximum size of request packets. By sending specially
crafted large request packets, a remote attacker who is allowed to access
the server could exploit this to execute arbitrary code with root
privileges.
A flaw was discovered in the way net-snmp handled certain requests. A
remote attacker who can connect to the snmpd UDP port (161 by default)
could send a malicious packet causing snmpd to crash, resulting in a
denial of service.
Nginx [engine x] is an HTTP(S) server, HTTP(S) reverse proxy and IMAP/POP3
proxy server written by Igor Sysoev. The "msie_refresh" directive could
allow cross site scripting.
Josh Burley reported that nss_ldap does not properly handle the LDAP
connections due to a race condition that can be triggered by
multi-threaded applications using nss_ldap, which might lead to
requested data being returned to a wrong process.
From the Red Hat advisory: A flaw was discovered in the way opal handled certain Session Initiation
Protocol (SIP) packets. An attacker could use this flaw to crash an
application, such as Ekiga, which is linked with opal. (CVE-2007-4924)
The OpenLDAP Lightweight Directory Access Protocol suite has a problem
with handling of malformed objectClasses LDAP attributes by the slapd
daemon. Both local and remote attackers can use this to crash slapd,
causing a denial of service.
slapo-pcache (overlays/pcache.c) in slapd in OpenLDAP before 2.3.39, when
running as a proxy-caching server, allocates memory using a malloc variant
instead of calloc, which prevents an array from being initialized properly
and might allow attackers to cause a denial of service (segmentation fault)
via unknown vectors that prevent the array from being null terminated.
A heap overflow vulnerability has been discovered in the TIFF parsing
code of the OpenOffice.org suite. The parser uses untrusted values
from the TIFF file to calculate the number of bytes of memory to
allocate. A specially crafted TIFF image could trigger an integer
overflow and subsequently a buffer overflow that could cause the
execution of arbitrary code.
A security vulnerability in HSQLDB, the default database engine shipped with OpenOffice.org 2 (all versions), may allow attackers to execute arbitrary static Java code, by manipulating database documents to be opened by a user.
Unknown vulnerability in the HSQLDB component in JBoss 3.2.1 and 3.0.8 on Java 1.4.x platforms, when running in the default configuration, allows remote attackers to conduct unauthorized activities and possibly execute arbitrary code via certain SQL statements to (1) TCP port 1701 in JBoss 3.2.1, and (2) port 1476 in JBoss 3.0.8.
Openssh 4.4 fixes some
security issues, including a pre-authentication denial of service, an
unsafe signal hander and on portable OpenSSH a GSSAPI authentication abort
could be used to determine the validity of usernames on some platforms.
Off-by-one error in the DTLS implementation in OpenSSL 0.9.8 before 0.9.8f
and 0.9.7 allows remote attackers to execute arbitrary code via unspecified
vectors.
From the Debian advisory: An off-by-one error has been identified in the SSL_get_shared_ciphers()
routine in the libssl library from OpenSSL, an implementation of Secure
Socket Layer cryptographic libraries and utilities. This error could
allow an attacker to crash an application making use of OpenSSL's libssl
library, or potentially execute arbitrary code in the security context
of the user running such an application.
The Opera browser has multiple vulnerabilities.
The JavaScript engine is vulnerable to a virtual function call on an invalid pointer that can be triggered by specially crafted JavaScript.
A freed pointer in the BitTorrent support may be
accessed, this can be used for malicious code execution.
The browser is vulnerable to several memory read protection
errors. There are URI display errors that can be used to trick
users into visiting arbitrary web sites.
PCRE has flaws in the way it handles malformed regular
expressions.
If an application linked against PCRE, such as Konqueror,
encounters a maliciously created regular expression, it may be possible
to run arbitrary code. Vulnerabilities CVE-2005-4872 and CVE-2006-7227
have been combined into CVE-2006-7224.
Multiple flaws were found in the way pcre handles certain malformed regular
expressions. If an application linked against pcre, such as Konqueror,
parses a malicious regular expression, it may be possible to run arbitrary
code as the user running the application. (CVE-2007-1659, CVE-2007-1660)
Specially crafted regular expressions could lead to buffer overflows in the pcre library. Applications using pcre to process regular expressions from untrusted sources could therefore potentially be exploited by attackers to execute arbitrary code as the user running the application.
Perl-Compatible Regular Expression (PCRE) library before 7.3 reads past the
end of the string when searching for unmatched brackets and parentheses,
which allows context-dependent attackers to cause a denial of service
(crash), possibly involving forward references. (CVE-2007-1662)
Heap-based buffer overflow in Perl-Compatible Regular Expression (PCRE)
library before 7.3 allows context-dependent attackers to execute arbitrary
code via a singleton Unicode sequence in a character class in a regex
pattern, which is incorrectly optimized. (CVE-2007-4768)
A flaw was found in Perl's regular expression engine. Specially crafted
input to a regular expression can cause Perl to improperly allocate memory,
possibly resulting in arbitrary code running with the permissions of the
user running Perl. (CVE-2007-5116)
The file_exists and imap_reopen functions in PHP before 5.1.5 do not check
for the safe_mode and open_basedir settings, which allows local users to
bypass the settings (CVE-2006-4481).
A buffer overflow in the LWZReadByte function in ext/gd/libgd/gd_gif_in.c
in the GD extension in PHP before 5.1.5 allows remote attackers to have an
unknown impact via a GIF file with input_code_size greater than
MAX_LWZ_BITS, which triggers an overflow when initializing the table array
(CVE-2006-4484).
The stripos function in PHP before 5.1.5 has unknown impact and attack
vectors related to an out-of-bounds read (CVE-2006-4485).
Various integer overflow flaws were found in the PHP gd extension. A
script that could be forced to resize images from an untrusted source could
possibly allow a remote attacker to execute arbitrary code as the apache
user. (CVE-2007-3996)
A previous security update introduced a bug into PHP session cookie
handling. This could allow an attacker to stop a victim from viewing a
vulnerable web site if the victim has first visited a malicious web page
under the control of the attacker, and that page can set a cookie for the
vulnerable web site. (CVE-2007-4670)
A flaw was found in the PHP money_format function. If a remote attacker
was able to pass arbitrary data to the money_format function this could
possibly result in an information leak or denial of service. Note that is
is unusual for a PHP script to pass user-supplied data to the money_format
function. (CVE-2007-4658)
A flaw was found in the PHP wordwrap function. If a remote attacker was
able to pass arbitrary data to the wordwrap function this could possibly
result in a denial of service. (CVE-2007-3998)
A bug was found in PHP session cookie handling. This could allow an
attacker to create a cross-site cookie insertion attack if a victim follows
an untrusted carefully-crafted URL. (CVE-2007-3799)
A flaw was found in handling of dynamic changes to global variables. A
script which used certain functions which change global variables could
be forced to enable the register_globals configuration option, possibly
resulting in global variable injection. (CVE-2007-4659)
An integer overflow flaw was found in the PHP chunk_split function. If a
remote attacker was able to pass arbitrary data to the third argument of
chunk_split they could possibly execute arbitrary code as the apache user.
Note that it is unusual for a PHP script to use the chunk_split function
with a user-supplied third argument. (CVE-2007-4661)
The Hardened-PHP Project discovered buffer overflows in
htmlentities/htmlspecialchars internal routines to the PHP Project. Of
course the whole purpose of these functions is to be filled with user
input. (The overflow can only be when UTF-8 is used)
Multiple integer overflows in PHP 4 before 4.4.8, and PHP 5 before 5.2.4,
allow remote attackers to obtain sensitive information (memory contents) or
cause a denial of service (thread crash) via a large len value to the (1)
strspn or (2) strcspn function, which triggers an out-of-bounds read. NOTE:
this affects different product versions than CVE-2007-3996.
(CVE-2007-4657)
Unspecified vulnerability in the chunk_split function in PHP before 5.2.4
has unknown impact and attack vectors, related to an incorrect size
calculation. (CVE-2007-4660)
Buffer overflow in the php_openssl_make_REQ function in PHP before 5.2.4
has unknown impact and attack vectors. (CVE-2007-4662)
The php5 package contains multiple vulnerabilities, the most serious of which involve several Denial of Service attacks (application crashes and temporary application hangs). It is not currently known that these vulnerabilities can be exploited to execute malicious code.
It was discovered that phpbb2, a web based bulletin board, insufficiently
sanitizes values passed to the "Font Color 3" setting, which might lead to
the execution of injected code by admin users.
The phpbb2 web forum has a number of vulnerabilities including:
a web script injection problem, a protection mechanism bypass, a
security check bypass, a remote global variable bypass, cross site
scripting vulnerabilities, an SQL injection vulnerability,
a remote regular expression modification problem, missing input
sanitizing, and a missing request validation problem.
Several remote vulnerabilities have been discovered in phpMyAdmin, a
program to administrate MySQL over the web. The Common Vulnerabilities
and Exposures project identifies the following problems:
CVE-2007-1325:
The PMA_ArrayWalkRecursive function in libraries/common.lib.php
does not limit recursion on arrays provided by users, which allows
context-dependent attackers to cause a denial of service (web
server crash) via an array with many dimensions.
CVE-2007-1395:
Incomplete blacklist vulnerability in index.php allows remote
attackers to conduct cross-site scripting (XSS) attacks by
injecting arbitrary JavaScript or HTML in a (1) db or (2) table
parameter value followed by an uppercase </SCRIPT> end tag,
which bypasses the protection against lowercase </script>.
CVE-2007-2245:
Multiple cross-site scripting (XSS) vulnerabilities allow remote
attackers to inject arbitrary web script or HTML via (1) the
fieldkey parameter to browse_foreigners.php or (2) certain input
to the PMA_sanitize function.
CVE-2006-6942:
Multiple cross-site scripting (XSS) vulnerabilities allow remote
attackers to inject arbitrary HTML or web script via (1) a comment
for a table name, as exploited through (a) db_operations.php,
(2) the db parameter to (b) db_create.php, (3) the newname parameter
to db_operations.php, the (4) query_history_latest,
(5) query_history_latest_db, and (6) querydisplay_tab parameters to
(c) querywindow.php, and (7) the pos parameter to (d) sql.php.
CVE-2006-6944:
phpMyAdmin allows remote attackers to bypass Allow/Deny access rules
that use IP addresses via false headers.
Cross-site scripting (XSS) vulnerability in scripts/setup.php in phpMyAdmin
2.11.1, when accessed by a browser that does not URL-encode requests,
allows remote attackers to inject arbitrary web script or HTML via the
query string.
Multiple cross-site scripting (XSS) vulnerabilities in phpMyAdmin before
2.11.1.2 allow remote attackers to inject arbitrary web script or HTML via
certain input available in (1) PHP_SELF in (a) server_status.php, and (b)
grab_globals.lib.php, (c) display_change_password.lib.php, and (d)
common.lib.php in libraries/; and certain input available in PHP_SELF and
(2) PATH_INFO in libraries/common.inc.php. NOTE: there might also be other
vectors related to (3) REQUEST_URI.
phpMyAdmin prior to version 2.11.2.1 has an SQL injection vulnerability
in db_create.php. Remote authenticated users with CREATE DATABASE privileges can use this to execute arbitrary SQL commands via the db parameter.
db_create.php also has a related cross-site scripting vulnerability.
Remote authenticated users can inject arbitrary web scripts or HTML
using a hex-encoded IMG element in the db parameter in a POST request.
The PEAR MDB2 in versions prior to 2.5.0a1 can interpret a request to
store a URL string as a request to retrieve and store the contents of the URL. This can allow remote attackers to obtain information by inserting
a URL in a form field in an MDB2 application.
A cross-site scripting (XSS) vulnerability in sqledit.php in phpPgAdmin
4.1.1 allows remote attackers to inject arbitrary web script or HTML via
the server parameter.
Unspecified vulnerability in pioneers (formerly gnocatan) 0.11.3 allows remote attackers to cause a denial of service (daemon crash) via unspecified vectors that trigger an assert error. NOTE: this issue reportedly exists because of an incomplete fix for CVE-2007-5933.
The xpdf and poppler PDF libraries contain several vulnerabilities which can lead to arbitrary command execution via hostile PDF files. Numerous other applications which use these libraries (PDF viewers, CUPS, etc.) will be affected by the vulnerabilities as well.
PostgreSQL 8.1 and probably later and earlier versions, when local trust
authentication is enabled and the Database Link library (dblink) is
installed, allows remote attackers to access arbitrary accounts and execute
arbitrary SQL queries via a dblink host parameter that proxies the
connection from 127.0.0.1. (CVE-2007-3278)
PostgreSQL 8.1 and probably later and earlier versions, when the PL/pgSQL
(plpgsql) language has been created, grants certain plpgsql privileges to
the PUBLIC domain, which allows remote attackers to create and execute
functions, as demonstrated by functions that perform local brute-force
password guessing attacks, which may evade intrusion
detection. (CVE-2007-3279)
The Database Link library (dblink) in PostgreSQL 8.1 implements functions
via CREATE statements that map to arbitrary libraries based on the C
programming language, which allows remote authenticated superusers to map
and execute a function from any library, as demonstrated by using the
system function in libc.so.6 to gain shell access. (CVE-2007-3280)
From the Red Hat advisory: A memory management flaw was discovered in PWLib. An attacker could use this
flaw to crash an application, such as Ekiga, which is linked with pwlib
(CVE-2007-4897).
Multiple integer overflows in the imageop module in Python 2.5.1 and
earlier allow context-dependent attackers to cause a denial of service
(application crash) and possibly obtain sensitive information (memory
contents) via crafted arguments to (1) the tovideo method, and unspecified
other vectors related to (2) imageop.c, (3) rbgimgmodule.c, and other
files, which trigger heap-based buffer overflows.
Format string bugs were found in several Qt warning messages.
Applications using Qt for processing certain data types could
trigger them if the data caused Qt to print warnings. The bugs
potentially allow to execute arbitrary code via specially crafted
files (CVE-2007-3388).
A buffer overflow was found in how Qt expanded malformed Unicode strings.
If an application linked against Qt parsed a malicious Unicode string, it
could lead to a denial of service or potentially allow for the execution of
arbitrary code.
The bgpd daemon in Quagga prior to 0.99.9 allowed remote BGP peers to cause
a denial of service crash via a malformed OPEN message or COMMUNITY
attribute.
rsync before 3.0.0pre6, when running a writable rsync daemon that is not using chroot, allows remote attackers to access restricted files via unknown vectors that cause rsync to create a symlink that points outside of the module's hierarchy.
The connect method in lib/net/http.rb in the (1) Net::HTTP and (2) Net::HTTPS libraries in Ruby 1.8.5 and 1.8.6 does not verify that the commonName (CN) field in a server certificate matches the domain name in an HTTPS request, which makes it easier for remote attackers to intercept SSL transmissions via a man-in-the-middle attack or spoofed web site.
The Samba user authentication is vulnerable to a heap-based buffer overflow.
Remote unauthenticated users can use this to crash the Samba server
and cause a denial of service.
Samba's mechanism for creating NetBIOS replies is vulnerable to a
buffer overflow. Samba servers that are configured to run as a
WINS server can be crashed by a remote unauthenticated user,
execution of arbitrary code may also be possible.
Tim Brown discovered these multiple issues: the translation module does
not properly sanitize the value to the "dir" parameter (CVE-2007-5491,
CVE-2007-5694); the translation module also does not sanitize the
values of the "edit" and "value" parameters which it passes to eval()
and include() (CVE-2007-5492, CVE-2007-5693); the log-in command does
not validate the URL to redirect users to after logging in
(CVE-2007-5695); SiteBar also contains several cross-site scripting
vulnerabilities (CVE-2007-5692).
Subversion 1.4.3 and earlier does not properly implement the "partial
access" privilege for users who have access to changed paths but not copied
paths, which allows remote authenticated users to obtain sensitive
information (revision properties) via svn (1) propget, (2) proplist, or (3)
propedit.
An unspecified vulnerability involving an "incorrect use of system
classes" was reported by the Fujitsu security team. Additionally, Chris
Evans from the Google Security Team reported an integer overflow
resulting in a buffer overflow in the ICC parser used with JPG or BMP
files, and an incorrect open() call to /dev/tty when processing certain
BMP files.
T1lib, an enhanced rasterizer for X11 Type 1 fonts, does
not properly perform bounds checking. An attacker can send
specially crafted input to applications linked against the library in
order to create a buffer overflow, resulting in a denial of service
or the execution of arbitrary code.
The tar utility has a symlink path traversal vulnerability involving
extracted archives. Maliciously created tar archives can be used to
write arbitrary data to files that the tar user has write access to.
A buffer overflow in the open_sty function in mkind.c for makeindex 2.14 in
teTeX might allow user-assisted remote attackers to overwrite files and
possibly execute arbitrary code via a long filename. NOTE: other overflows
exist but might not be exploitable, such as a heap-based overflow in the
check_idx function.
Joachim Schrod discovered several buffer overflow vulnerabilities and
an insecure temporary file creation in the "dvilj" application that is
used by dvips to convert DVI files to printer formats (CVE-2007-5937,
CVE-2007-5936). Bastien Roucaries reported that the "dvips" application
is vulnerable to two stack-based buffer overflows when processing DVI
documents with long \href{} URIs (CVE-2007-5935). teTeX also includes
code from Xpdf that is vulnerable to a memory corruption and two
heap-based buffer overflows (GLSA 200711-22); and it contains code from
T1Lib that is vulnerable to a buffer overflow when processing an overly
long font filename (GLSA 200710-12).
The Tk toolkit's GIF-reading code contains a buffer overflow which could be exploited via a malicious image file. Fixes may be found in versions 8.4.12 and 8.3.5.
It was discovered that Tk could be made to overrun a buffer when loading
certain images. If a user were tricked into opening a specially crafted GIF
image, remote attackers could cause a denial of service or execute
arbitrary code with user privileges.
Jan Oravec reported that the "/usr/bin/tomboy" script sets the
"LD_LIBRARY_PATH" environment variable incorrectly, which might result
in the current working directory (.) to be included when searching for
dynamically linked libraries of the Mono Runtime application.
Note that the tomboy vulnerability was added in 2007.
Some JSPs within the 'examples' web application did not escape user
provided data. If the JSP examples were accessible, this flaw could allow a
remote attacker to perform cross-site scripting attacks (CVE-2007-2449).
Note: it is recommended the 'examples' web application not be installed on
a production system.
The Manager and Host Manager web applications did not escape user provided
data. If a user is logged in to the Manager or Host Manager web
application, an attacker could perform a cross-site scripting attack
(CVE-2007-2450).
Tomcat was found treating single quote characters -- ' -- as delimiters in
cookies. This could allow remote attackers to obtain sensitive information,
such as session IDs, for session hijacking attacks (CVE-2007-3382).
It was reported Tomcat did not properly handle the following character
sequence in a cookie: \" (a backslash followed by a double-quote). It was
possible remote attackers could use this failure to obtain sensitive
information, such as session IDs, for session hijacking attacks
(CVE-2007-3385).
A cross-site scripting (XSS) vulnerability existed in the Host Manager
Servlet. This allowed remote attackers to inject arbitrary HTML and web
script via crafted requests (CVE-2007-3386).
Absolute path traversal vulnerability in Apache Tomcat 4.0.0 through 4.0.6, 4.1.0, 5.0.0, 5.5.0 through 5.5.25, and 6.0.0 through 6.0.14, under certain configurations, allows remote authenticated users to read arbitrary files via a WebDAV write request that specifies an entity with a SYSTEM tag.
mount and umount in util-linux call the setuid and setgid functions in the
wrong order and do not check the return values, which might allow attackers
to gain privileges via helpers such as mount.nfs.
Directory traversal vulnerability in the WML engine preprocessor for
Wesnoth before 1.2.8 allows remote attackers to read arbitrary files via
".." sequences in unknown vectors.
The wireshark network traffic analyzer has three vulnerabilities
that can be used to create a denial of service. These include
off-by-one overflows in the iSeries dissector, vulnerabilities in
the MMS and SSL dissectors that can cause an infinite loop and
an off-by-one overflow in the DHCP/BOOTP dissector.
Several remote vulnerabilities have been discovered in the Wireshark
network traffic analyzer, which may lead to denial of service or the
execution of arbitrary code.
xorg-x11 has a number of integer and heap overflow vulnerabilities in
the xfs font server. A local attacker may be able to use these for
the execution of arbitrary code with elevated privileges.
iDefense reported an integer overflow flaw in the XFree86 XC-MISC
extension. A malicious authorized client could exploit this issue to cause
a denial of service (crash) or potentially execute arbitrary code with root
privileges on the XFree86 server. (CVE-2007-1003)
iDefense reported two integer overflows in the way X.org handled various
font files. A malicious local user could exploit these issues to
potentially execute arbitrary code with the privileges of the X.org server.
(CVE-2007-1351, CVE-2007-1352)
An integer overflow flaw was found in the XFree86 XGetPixel() function.
Improper use of this function could cause an application calling it to
function improperly, possibly leading to a crash or arbitrary code
execution. (CVE-2007-1667)
Moritz Jodeit discovered that the DirectShow loader of Xine did not
correctly validate the size of an allocated buffer. By tricking a user
into opening a specially crafted media file, an attacker could execute
arbitrary code with the user's privileges.
xine-lib does an improper input data boundary check on
MPEG streams. A specially crafted MPEG file can be
created that can cause arbitrary code execution when the
file is accessed.
xmms suffers from vulnerabilities in its handling of BMP images. Should a hostile image be included in an xmms skin, it could lead to code execution on the user's system.
The X.Org X11 xfs font server has a temp file vulnerability in the
startup script. A local user can modify the permissions of the script
in order to elevate their local privileges.
CVE-2007-1095:
Michal Zalewski discovered that the unload event handler had access to
the address of the next page to be loaded, which could allow information
disclosure or spoofing.
CVE-2007-2292:
Stefano Di Paola discovered that insufficient validation of user names
used in Digest authentication on a web site allows HTTP response splitting
attacks.
CVE-2007-3511:
It was discovered that insecure focus handling of the file upload
control can lead to information disclosure. This is a variant of
CVE-2006-2894.
CVE-2007-5334:
Eli Friedman discovered that web pages written in Xul markup can hide the
titlebar of windows, which can lead to spoofing attacks.
CVE-2007-5337:
Georgi Guninski discovered the insecure handling of smb:// and sftp:// URI
schemes may lead to information disclosure. This vulnerability is only
exploitable if Gnome-VFS support is present on the system.
CVE-2007-5338:
"moz_bug_r_a4" discovered that the protection scheme offered by XPCNativeWrappers
could be bypassed, which might allow privilege escalation.
CVE-2007-5339:
L. David Baron, Boris Zbarsky, Georgi Guninski, Paul Nickerson, Olli Pettay,
Jesse Ruderman, Vladimir Sukhoy, Daniel Veditz, and Martijn Wargers discovered
crashes in the layout engine, which might allow the execution of arbitrary code.
CVE-2007-5340:
Igor Bukanov, Eli Friedman, and Jesse Ruderman discovered crashes in the
Javascript engine, which might allow the execution of arbitrary code.
It was discovered that Plone, a web content management system, allows
remote attackers to execute arbitrary code via specially crafted web
browser cookies.
