Eavesdropping on Tor traffic
By Jake Edge
September 12, 2007
A Swedish security researcher, Dan Egerstad, recently highlighted a
flaw in the way many folks are using Tor,
a tool for internet anonymity. He said that he had captured user names and
passwords for at least 1000 email accounts, posting
the details for 100 of those. Ten days after the initial disclosure,
he followed
up with information on how he captured the data.
Tor (aka The Onion Router) is a system designed to hide the source and
destination of internet traffic by routing it through a few intermediate
nodes. Software is available for most operating systems and can run in
either client or server mode. The Tor network consists of many server
nodes that can route this traffic, but it also has special nodes, called
"exit nodes" that are the endpoints for traffic within the Tor network.
Exit nodes are the ones that actually talk to the server the client was
trying to reach, thus they see any traffic exactly as it will be presented
to the destination.
A Tor client picks a random path through the network, using a directory
server to get a list of active nodes. For each hop along that path, it
negotiates a separate session key. It encrypts the packet data, along with
a destination address, once per node in the path, building up a packet with
multiple layers of encrypted information. Each layer can only be
decrypted by the proper intermediate node. Each intermediate node only
knows about its predecessor, the destination, and the key, so with more than
a few nodes, the source and ultimate destination are hidden. The exit node
is the last layer of the onion, what it decrypts is the data bound for the
destination.
Running an exit node for Tor has some risks associated with it, as all
traffic that goes to a destination site appears to originate from the exit
node host. If the destination gets attacked by a
denial of service or other exploit, the exit node operator would seem to be
the guilty party. For this reason, Tor servers can determine whether or not they are
willing to be exit nodes. What Egerstad did was to volunteer five servers
as exit nodes and monitor the traffic that went by.
What his exit nodes saw was the traffic bound for various servers, much of
it in the clear. He collected authentication for email servers from many
users, with the ones he released being embassy workers and members of human
rights organizations. He monitored the POP3 and IMAP protocols,
specifically looking for keywords associated with governments. By looking
at those two protocols, he not only was able to capture passwords, his exit
nodes also saw all of the email stream by as it was delivered to the users.
This should come as no real surprise, unencrypted email protocols are a
security hazard; they should probably go the way of telnet,
and be banished from internet usage. What is more surprising, but perhaps
shouldn't be, is that people are using Tor to retrieve their email. Tor is
not supposed to be a complete privacy solution, and it is not
presented that way, but the difference between anonymity and privacy seem
to have gotten lost.
It is a near certainty that others are doing just what Egerstad did.
Governments and criminals – though it can be hard to distinguish
between the two at times – both have an interest in monitoring this
kind of traffic. Egerstad lists a number of suspicious exit nodes in the
Tor network, any or all of which could be scanning the cleartext traffic
that streams by.
In some ways, Tor is really no different than the myriad routers that
internet traffic passes through; each of those presents a point where
traffic could be intercepted. Tor is better in that regard, perhaps,
because all but the last leg (which, of course, traverses any number of
routers) are encrypted. If an encrypted protocol, SSL or an ssh
tunnel for example, were used end-to-end, Egerstad's monitoring would not
have worked. With proper certificate/key handling, no intermediate node, Tor
or router, can decrypt the traffic.
It is a bit ironic that one would use a service meant to provide
anonymity to log in to a system using credentials that are intended to
restrict access to a particular user. It is a bit like renting a room at
the No-Tell Motel using your credit card. Presumably, the users had Tor
installed and running for other reasons and either didn't know or forgot to
turn it off when retrieving their email. Perhaps their email client
helpfully retrieves their email every few minutes without their
intervention.
It should be noted that Tor does not do anything above the protocol
level to anonymize traffic. Cookies, browser identification strings and
other information can be used to identify who is using the connection to
anyone with access to the traffic. Obviously, logging in makes that
even easier. Another known threat to anonymity using Tor, even with
end-to-end encryption, is timing analysis. If someone can monitor the
timing of the packets at the client and those at
the server, they can make a statistical correlation between the two.
Tor achieved another kind of notoriety, recently, as some of the storm worm spam started pushing
it as a solution for internet anonymity. Unfortunately, users who followed
the link landed on a fake
Tor download page. Downloading the software did not result in any
increase in their privacy, it simply installed one of the storm worm
variants. It is certainly not the publicity that Tor wanted, but it could,
perhaps, lead a few users to the real Tor. It is a dubious honor, but the
storm worm herders must believe that the Tor name has some credibility in
order to use it this way.
Tor is an excellent tool for what it does, but it certainly is not a
solution to all internet communication privacy issues. As with most
things, users need to understand what they are doing before they can gain
the benefits of Tor. By managing the higher level identifying information
correctly (perhaps by using
something like Privoxy), one
can use internet services anonymously with a reasonable level of comfort.
Using end-to-end encryption makes it that much better.
Comments (5 posted)
New vulnerabilities
eggdrop: stack-based buffer overflow
| Package(s): | eggdrop |
CVE #(s): | CVE-2007-2807
|
| Created: | September 7, 2007 |
Updated: | January 7, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
gforge: missing input sanitizing
| Package(s): | gforge |
CVE #(s): | CVE-2007-3913
|
| Created: | September 7, 2007 |
Updated: | September 12, 2007 |
| Description: |
Sumit I. Siddharth discovered that Gforge, a collaborative development
tool, performs insufficient input sanitizing, which allows SQL injection. |
| Alerts: |
|
Comments (none posted)
jffnms: multiple vulnerabilities
| Package(s): | jffnms |
CVE #(s): | CVE-2007-3189
CVE-2007-3190
CVE-2007-3191
CVE-2007-3192
|
| Created: | September 12, 2007 |
Updated: | September 12, 2007 |
| Description: |
jffnms, a web-based network management system, suffers from a cross-site scripting vulnerability, multiple SQL injection vulnerabilities, and an authentication bypass problem. |
| Alerts: |
|
Comments (none posted)
lighttpd: buffer overflow
| Package(s): | lighttpd |
CVE #(s): | CVE-2007-4727
|
| Created: | September 12, 2007 |
Updated: | October 8, 2007 |
| Description: |
From the Fedora advisory: Lighttpd (1.4.17 and earlier) is prone to a header overflow when using the mod_fastcgi extension,
this can lead to arbitrary code execution in the fastcgi application. |
| Alerts: |
|
Comments (none posted)
openssh: inappropriate use of trusted cookies
| Package(s): | gnome-ssh-askpass openssh |
CVE #(s): | CVE-2007-4752
|
| Created: | September 11, 2007 |
Updated: | August 25, 2008 |
| Description: |
OpenSSH in versions prior
4.7 could use a trusted X11 cookie if the creation of an untrusted
cookie failed. |
| Alerts: |
|
Comments (none posted)
phpmyadmin: multiple vulnerabilities
| Package(s): | phpmyadmin |
CVE #(s): | CVE-2006-6942
CVE-2006-6944
CVE-2007-1325
CVE-2007-1395
CVE-2007-2245
|
| Created: | September 10, 2007 |
Updated: | October 18, 2007 |
| Description: |
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.
|
| Alerts: |
|
Comments (none posted)
qgit: arbitrary code execution
| Package(s): | qgit |
CVE #(s): | CVE-2007-4631
|
| Created: | September 10, 2007 |
Updated: | October 8, 2007 |
| Description: |
Not only does QGit construct a predictable file name here, and doesn't check if
the files already exist, which can be leveraged into information leak or
arbitrary file overwrite in case they're symlinks, but later on executes one of
them. This is not just problem when /tmp is mounted with noexec option, but
might be exploited into arbitrary code execution under time-dependent race
condition. |
| Alerts: |
|
Comments (none posted)
samba: incorrect group assignment
| Package(s): | samba |
CVE #(s): | CVE-2007-4138
|
| Created: | September 12, 2007 |
Updated: | November 15, 2007 |
| Description: |
From the Samba advisory: When the rfc2307 or sfu nss_info plugin has been enabled, in
the absence of either the RFC2307 or SFU primary group attribute,
Winbind will assign a primary group ID of 0 to the domain user
queried using the getpwnam() C library call. |
| Alerts: |
|
Comments (1 posted)
wordpress: privilege bypass
| Package(s): | wordpress |
CVE #(s): | |
| Created: | September 12, 2007 |
Updated: | September 12, 2007 |
| Description: |
Wordpress 2.2.3 has been released to fix a security problem. The project has not gone out of its way to describe this problem, but, from the fixed bug list, one concludes that it is possible for users without the requisite privileges to post arbitrary HTML. |
| Alerts: |
|
Comments (none posted)
xorg-server: local privilege escalation
| Package(s): | xorg-server |
CVE #(s): | CVE-2007-4730
|
| Created: | September 10, 2007 |
Updated: | January 24, 2008 |
| Description: |
Aaron Plattner discovered a buffer overflow in the Composite extension
of the X.org X server, which can lead to local privilege escalation. |
| Alerts: |
|
Comments (none posted)
Updated vulnerabilities
aide: checksum errors
| Package(s): | aide |
CVE #(s): | CVE-2007-3849
|
| Created: | September 4, 2007 |
Updated: | September 5, 2007 |
| Description: |
Advanced Intrusion Detection Environment (AIDE) is a file integrity checker
and intrusion detection program. A flaw was discovered in the way file
checksums were stored in the AIDE database. A packaging flaw in the Red Hat
AIDE rpm resulted in the file database not containing any file checksum
information. This could prevent AIDE from detecting certain file
modifications. |
| Alerts: |
|
Comments (none posted)
apache2: information disclosure
| Package(s): | apache |
CVE #(s): | CVE-2007-1862
|
| Created: | June 20, 2007 |
Updated: | February 18, 2008 |
| Description: |
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." |
| Alerts: |
|
Comments (2 posted)
apache: multiple vulnerabilities
| Package(s): | apache |
CVE #(s): | CVE-2007-3304
CVE-2006-5752
|
| Created: | June 27, 2007 |
Updated: | February 18, 2008 |
| Description: |
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) |
| Alerts: |
|
Comments (1 posted)
apache: cross-site scripting
| Package(s): | apache |
CVE #(s): | CVE-2006-3918
|
| Created: | August 9, 2006 |
Updated: | April 4, 2008 |
| Description: |
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." |
| Alerts: |
|
Comments (none posted)
avahi: denial of service
| Package(s): | avahi |
CVE #(s): | CVE-2007-3372
|
| Created: | June 28, 2007 |
Updated: | September 18, 2007 |
| Description: |
Avahi is vulnerable to a local denial of service that can be caused by
making an erroneous call to the assert() function. |
| Alerts: |
|
Comments (none posted)
bochs: buffer overflow
| Package(s): | bochs |
CVE #(s): | CVE-2007-2893
|
| Created: | July 20, 2007 |
Updated: | November 19, 2007 |
| Description: |
A heap-based buffer overflow in the bx_ne2k_c::rx_frame function in
iodev/ne2k.cc in the emulated NE2000 device in Bochs 2.3 allows local users
of the guest operating system to write to arbitrary memory locations and
gain privileges on the host operating system via vectors that cause TXCNT
register values to exceed the device memory size, aka "RX Frame heap
overflow." |
| Alerts: |
|
Comments (none posted)
centericq: buffer overflows
| Package(s): | centericq |
CVE #(s): | CVE-2007-3713
|
| Created: | July 20, 2007 |
Updated: | December 17, 2007 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
clamav: denial of service
| Package(s): | clamav |
CVE #(s): | CVE-2007-3725
|
| Created: | July 24, 2007 |
Updated: | February 27, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
clamav: multiple vulnerabilities
| Package(s): | clamav |
CVE #(s): | CVE-2007-4510
CVE-2007-4560
|
| Created: | September 3, 2007 |
Updated: | February 13, 2008 |
| Description: |
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.
|
| Alerts: |
|
Comments (none posted)
cups: denial of service
| Package(s): | cups |
CVE #(s): | CVE-2007-0720
|
| Created: | March 26, 2007 |
Updated: | February 7, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
gpdf: integer overflow
| Package(s): | cups poppler xpdf |
CVE #(s): | CVE-2007-3387
|
| Created: | July 31, 2007 |
Updated: | November 28, 2007 |
| Description: |
The gpdf library contains an integer overflow which can be exploited via a malicious PDF file. This code finds its way into multiple packages, including xpdf, kpdf, poppler, cups, and more. |
| Alerts: |
|
Comments (1 posted)
dovecot: privilege escalation
| Package(s): | dovecot |
CVE #(s): | CVE-2007-4211
|
| Created: | August 15, 2007 |
Updated: | May 21, 2008 |
| Description: |
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." |
| Alerts: |
|
Comments (none posted)
dovecot: directory traversal
| Package(s): | dovecot |
CVE #(s): | CVE-2007-2231
|
| Created: | May 8, 2007 |
Updated: | May 21, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
evolution: format string error
| Package(s): | evolution |
CVE #(s): | CVE-2007-1002
|
| Created: | March 27, 2007 |
Updated: | February 27, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (1 posted)
evolution-data-server: malicious server arbitrary code execution
| Package(s): | evolution-data-server |
CVE #(s): | CVE-2007-3257
|
| Created: | June 18, 2007 |
Updated: | November 7, 2007 |
| Description: |
From the GNOME
bugzilla: "The "SEQUENCE" value in the GData of the IMAP code
(camel-imap-folder.c) is converted from a string using strtol. This allows
for negative values. The imap_rescan uses this value as an int. It checks
for !seq and seq>summary.length. It doesn't check for seq <
0. Although seq is used as the index of an array." |
| Alerts: |
|
Comments (1 posted)
fetchmail: denial of service
| Package(s): | fetchmail |
CVE #(s): | CVE-2007-4565
|
| Created: | September 5, 2007 |
Updated: | September 26, 2007 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
file: integer overflow
| Package(s): | file |
CVE #(s): | CVE-2007-2799
|
| Created: | June 1, 2007 |
Updated: | October 19, 2007 |
| Description: |
Colin Percival from FreeBSD reported that the previous fix for the
file_printf() buffer overflow introduced a new integer overflow. A remote
attacker could entice a user to run the file program on an overly large
file (more than 1Gb) that would trigger an integer overflow on 32-bit
systems, possibly leading to the execution of arbitrary code with the
rights of the user running file. |
| Alerts: |
|
Comments (3 posted)
firebird: buffer overflow
| Package(s): | firebird |
CVE #(s): | CVE-2007-3181
|
| Created: | July 2, 2007 |
Updated: | March 27, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
firefox: multiple vulnerabilities
| Package(s): | firefox |
CVE #(s): | CVE-2007-3844
CVE-2007-3845
|
| Created: | August 1, 2007 |
Updated: | February 20, 2008 |
| Description: |
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) |
| Alerts: |
|
Comments (none posted)
firefox, thunderbird, seamonkey: multiple vulnerabilities
| Package(s): | firefox, thunderbird, seamonkey |
CVE #(s): | CVE-2007-3738
CVE-2007-3656
CVE-2007-3670
CVE-2007-3285
CVE-2007-3737
CVE-2007-3089
CVE-2007-3736
CVE-2007-3734
CVE-2007-3735
|
| Created: | July 18, 2007 |
Updated: | May 12, 2008 |
| Description: |
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) |
| Alerts: |
|
Comments (none posted)
flac123: arbitrary code execution
| Package(s): | flac123 |
CVE #(s): | CVE-2007-3507
|
| Created: | July 13, 2007 |
Updated: | October 22, 2007 |
| Description: |
A stack-based buffer overflow in the local__vcentry_parse_value function in
vorbiscomment.c in flac123 (aka flac-tools or flac) before 0.0.10 allows
user-assisted remote attackers to execute arbitrary code via a large
comment value_length. |
| Alerts: |
|
Comments (none posted)
freetype: integer overflows
| Package(s): | freetype |
CVE #(s): | CVE-2006-0747
CVE-2006-1861
CVE-2006-2493
CVE-2006-2661
CVE-2006-3467
|
| Created: | June 8, 2006 |
Updated: | October 10, 2007 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
gallery2: multiple unspecified vulnerabilities
| Package(s): | gallery2 |
CVE #(s): | CVE-2007-4650
|
| Created: | September 5, 2007 |
Updated: | November 9, 2007 |
| Description: |
Multiple unspecified vulnerabilities in Gallery before 2.2.3 allow
attackers to (1) rename items, (2) read and modify item properties, or (3) lock and replace items
via unknown vectors in (a) the WebDAV module; and (4) edit unspecified data files using "linked
items" in (a) WebDAV and (b) Reupload modules. |
| Alerts: |
|
Comments (none posted)
gcc: file overwrite vulnerability
| Package(s): | gcc |
CVE #(s): | CVE-2006-3619
|
| Created: | September 6, 2006 |
Updated: | March 14, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
gd: buffer overflow
| Package(s): | gd |
CVE #(s): | CVE-2007-0455
|
| Created: | February 7, 2007 |
Updated: | February 28, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (2 posted)
gd: multiple vulnerabilities
| Package(s): | gd |
CVE #(s): | CVE-2007-3472
CVE-2007-3473
CVE-2007-3474
CVE-2007-3475
CVE-2007-3476
CVE-2007-3477
CVE-2007-3478
|
| Created: | August 6, 2007 |
Updated: | July 22, 2008 |
| Description: |
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) |
| Alerts: |
|
Comments (none posted)
gd: denial of service
| Package(s): | gd |
CVE #(s): | CVE-2007-2756
|
| Created: | June 14, 2007 |
Updated: | February 28, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
gdm: denial of service
| Package(s): | gdm |
CVE #(s): | CVE-2007-3381
|
| Created: | August 1, 2007 |
Updated: | September 20, 2007 |
| Description: |
JLANTHEA reported a denial of service flaw in the way that gdm listens on its Unix domain socket.
Any local user can crash the locally running X session. |
| Alerts: |
|
Comments (none posted)
gimp: multiple vulnerabilities
| Package(s): | gimp |
CVE #(s): | CVE-2007-2949
|
| Created: | June 28, 2007 |
Updated: | February 27, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
HelixPlayer: arbitrary code execution
| Package(s): | HelixPlayer |
CVE #(s): | CVE-2007-3410
|
| Created: | June 27, 2007 |
Updated: | September 17, 2007 |
| Description: |
A buffer overflow flaw was found in the way HelixPlayer processed
Synchronized Multimedia Integration Language (SMIL) files. It was possible
for a malformed SMIL file to execute arbitrary code with the permissions of
the user running HelixPlayer. (CVE-2007-3410) |
| Alerts: |
|
Comments (1 posted)
horde-kronolith: local file inclusion
| Package(s): | horde-kronolith |
CVE #(s): | CVE-2006-6175
|
| Created: | January 17, 2007 |
Updated: | March 7, 2008 |
| Description: |
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). |
| Alerts: |
|
Comments (none posted)
id3lib: insecure tmpfile creation
| Package(s): | id3lib |
CVE #(s): | CVE-2007-4460
|
| Created: | August 27, 2007 |
Updated: | October 2, 2007 |
| Description: |
The RenderV2ToFile function in tag_file.cpp in id3lib (aka libid3) 3.8.3
allows local users to overwrite arbitrary files via a symlink attack on a
temporary file whose name is constructed from the name of a file being
tagged. |
| Alerts: |
|
Comments (none posted)
ImageMagick: integer overflows
| Package(s): | imagemagick |
CVE #(s): | CVE-2007-1797
|
| Created: | April 4, 2007 |
Updated: | April 17, 2008 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
jasper: denial of service
| Package(s): | jasper |
CVE #(s): | CVE-2007-2721
|
| Created: | June 1, 2007 |
Updated: | November 6, 2007 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
java-1.5.0-sun: multiple vulnerabilities
| Package(s): | java-1.5.0-sun |
CVE #(s): | CVE-2007-3503
CVE-2007-3655
CVE-2007-3698
CVE-2007-3922
|
| Created: | August 6, 2007 |
Updated: | June 24, 2008 |
| Description: |
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)
|
| Alerts: |
|
