SQL injection attacks
March 24, 2006
This article was contributed by Jake Edge.
One of the more devastating attacks on a web application is also one of the
most common: SQL injection. This technique allows an attacker to gain
access to the database that underlies many web sites and read and potentially
modify data that is not meant to be available to users of that site. This article
provides an overview of how SQL injection works and what can be done to
avoid it.
A classic example of SQL injection starts with a query that looks
something like:
SELECT id FROM users WHERE name='$name' AND pass='$pass';
This query might be used to authenticate users when they log in to a
web site. If it returns a row, the user id returned is considered to
be authenticated and the application proceeds to serve the correct page
for that user. In this case, the
$name and
$pass variables
would come from a login form that might look something like:
<form method="post" action="login.php">
<input type="text" name="name">
<input type="password" name="pass">
<input type="submit" value="login">
</form>
If the login.php program in this example blindly sets the variables
to the values that come from the user, a malicious user can bypass the
authentication. Consider the following inputs:
$user = "' OR 1=1 ";
$pass = "' OR 1=1 LIMIT 1";
This results in a query that is completely different from what the web
programmer expected:
SELECT id FROM users WHERE name='' OR 1=1 AND pass='' OR 1=1 LIMIT 1;
This query will always return one row (unless the table is empty) and it
is likely to be the first entry in the table. For many applications, that
entry is the administrative login; the one with the most privileges.
This simple example barely scratches the surface of the kinds of attacks
that can be made using SQL injection. Depending on the DBMS, it may be
possible to do multiple queries via an injection by separating each with a
semicolon:
SELECT id FROM users WHERE name='' AND pass=''; DROP TABLE users;
which is, of course, a rather destructive injection.
MySQL does not allow multiple queries in a statement, but PostgreSQL is
susceptible to this technique.
Web site and/or database search functions are particularly dangerous because
they display their output; if a malicious user can inject any query they
choose, they can capture the entire contents of the database. The UNION
keyword can turn a query such as:
SELECT city, state FROM users WHERE name LIKE '%$search%';
into:
SELECT city, state FROM users
WHERE name LIKE '%%' UNION
SELECT name, pass FROM users
WHERE name LIKE '%%';
And instead of just printing the city and state of users that match the input
string, we are also printing the username and password of every user in the
system.
A certain amount of guessing column names and types is required if an
attacker does not have access to the database schema, but they are often
not very hard to guess given some understanding of the application.
Some database systems, notably Microsoft SQL Server, seem to deliberately
shoot themselves in the foot by providing the schema for all tables in
a generally accessible database, thereby removing all the guesswork.
Injection also requires a certain amount of imagination to visualize the
kinds of queries that might be going on behind the input boxes of a web
form. It requires quite a bit of trial and error unless one has access
to the source; this is why the majority of reported SQL injections are
in free software or open source web applications.
Note that it is not only web forms using the POST method that are vulnerable,
many web applications that use the GET method are vulnerable to injections
via the URL:
http://vulnerablewebapp.com/login.php?\
name=%27%20OR%201%3D1%20&pass=%27%20OR%201%3D1%20LIMIT%201
Like many other web vulnerabilities, SQL injection stems from insufficient
filtering of user input. Unfortunately, it is sometimes difficult to
determine what kinds of input should be accepted (for example the
password "' OR 1=1" would not necessarily seem illegal) and using
various filtering functions provided
by the language may not actually prevent injections. The PHP
addslashes() function is often used to sanitize user input because
it will put a backslash in front of single quotes which will stop the kinds
of injections described above. Unfortunately, there are
techniques
to circumvent this particular 'fix' as well.
Probably the simplest way to protect queries from SQL injection is by
using prepared statements with placeholders. Any reasonable database
interface will provide a way to use this functionality and in many
cases, it is fairly portable between languages and DBM systems.
Instead of directly interpolating string values into query strings, a query
is prepared using '?' as a placeholder for the variables as shown in the
following pseudocode:
$sth = prepare("SELECT id FROM users WHERE name=? AND pass=?");
execute($sth, $name, $pass);
This has a number of advantages: the DBMS library is responsible for properly
quoting the values and because of the way the variables are
bound to the query, they can never be treated as anything other than data
for the particular place they have in the prepared statement. This
effectively turns the injection attempt above into a query like:
SELECT id FROM users WHERE name='\' OR 1=1 ' AND pass='\' OR 1=1 LIMIT 1';
which is unlikely to authenticate.
Another way to defend against injections is by ensuring that all user input
is passed through a database specific quoting function before being used
in a query:
$name = db_quote($name);
$pass = db_quote($pass);
SELECT id FROM users WHERE name=$name AND pass=$pass;
Depending on the language and database API, this method may also be fairly
portable.
The final recommended technique is also the most complicated; but it can
provide an additional level of security if stored procedures are
available for the DBMS.
Stored procedures are queries (and more complicated functions) that are
created by the database administrator and stored with the database. These
procedures are then called by the application code to do any queries that
they require. The equivalent of the prepare functionality is done on
the procedures at the time they are stored and with proper coding, this
will prevent injections. One of the main advantages is that these procedures
run with the privileges of the user that stored them, instead of the user
invoking them and this allows the application to have a much more limited
set of privileges than it would normally require. The upshot is that it
can protect the database from reading or writing even if the application
is subverted in some way.
SQL injections are clearly a serious security problem, but one that can
be thwarted relatively easily once one understands the problem and the
ways to program around it.
Comments (23 posted)
New vulnerabilities
firebird2: buffer overflow
| Package(s): | firebird2 |
CVE #(s): | CVE-2004-2043
|
| Created: | March 23, 2006 |
Updated: | March 24, 2006 |
| Description: |
The firebird2 database has a buffer overflow vulnerability
that can be exploited by remote users to crash the application. |
| Alerts: |
|
Comments (none posted)
freeradius: authentication bypass
| Package(s): | freeradius |
CVE #(s): | CVE-2006-1354
|
| Created: | March 24, 2006 |
Updated: | June 5, 2006 |
| Description: |
An unspecified vulnerability in FreeRADIUS 1.0.0 up to 1.1.0 allows remote
attackers to bypass authentication or cause a denial of service (server
crash) via "Insufficient input validation" in the EAP-MSCHAPv2 state
machine module. |
| Alerts: |
|
Comments (none posted)
nethack: privilege escalation
| Package(s): | nethack |
CVE #(s): | |
| Created: | March 24, 2006 |
Updated: | March 24, 2006 |
| Description: |
The rogue-like games NetHack, Slash'EM and Falcon's Eye are vulnerable to
local privilege escalation vulnerabilities that could potentially allow the
execution of arbitrary code as other users. |
| Alerts: |
|
Comments (none posted)
RealPlayer: buffer overflow
| Package(s): | RealPlayer |
CVE #(s): | CVE-2006-0323
|
| Created: | March 23, 2006 |
Updated: | March 27, 2006 |
| Description: |
RealPlayer has a buffer overflow vulnerability in the Flash
Media .swf file processing code. If a user is tricked into playing
a maliciously formed Flash Media file, arbitrary code may be executed
with the privileges of the user. |
| Alerts: |
|
Comments (none posted)
Updated vulnerabilities
ADOdb: PostgresSQL command injection
| Package(s): | adodb |
CVE #(s): | CVE-2006-0410
|
| Created: | February 6, 2006 |
Updated: | April 17, 2006 |
| Description: |
Andy Staudacher discovered that ADOdb does not properly sanitize all
parameters. By sending specifically crafted requests to an application
that uses ADOdb and a PostgreSQL backend, an attacker might exploit the
flaw to execute arbitrary SQL queries on the host. |
| Alerts: |
|
Comments (none posted)
apache: cross-site scripting
| Package(s): | apache |
CVE #(s): | CVE-2005-3352
|
| Created: | December 14, 2005 |
Updated: | May 10, 2006 |
| Description: |
Versions 1 and 2 of the apache web server suffer from a cross-site scripting vulnerability in the mod_imap module; see this bugzilla entry for details. |
| Alerts: |
|
Comments (none posted)
beagle: untrusted search path vulnerability
| Package(s): | beagle |
CVE #(s): | CVE-2006-1296
|
| Created: | March 21, 2006 |
Updated: | March 22, 2006 |
| Description: |
Untrusted search path vulnerability in Beagle 0.2.2.1 might allow local
users to gain privileges via a malicious beagle-info program in the current
working directory, or possibly directories specified in the PATH. |
| Alerts: |
|
Comments (none posted)
blender: integer overflow
| Package(s): | blender |
CVE #(s): | CVE-2005-4470
|
| Created: | January 6, 2006 |
Updated: | June 15, 2006 |
| Description: |
Damian Put discovered that Blender did not properly validate a 'length'
value in .blend files. Negative values led to an insufficiently sized
memory allocation. By tricking a user into opening a specially crafted
.blend file, this could be exploited to execute arbitrary code with the
privileges of the Blender user. |
| Alerts: |
|
Comments (none posted)
bzip2: race condition and infinite loop
| Package(s): | bzip2 |
CVE #(s): | CAN-2005-0953
CAN-2005-1260
|
| Created: | May 17, 2005 |
Updated: | January 10, 2007 |
| Description: |
A race condition in bzip2 1.0.2 and earlier allows local users to modify
permissions of arbitrary files via a hard link attack on a file while it is
being decompressed, whose permissions are changed by bzip2 after the
decompression is complete. Also specially crafted bzip2 archives may cause
an infinite loop in the decompressor. |
| Alerts: |
|
Comments (2 posted)
cairo: denial of service
| Package(s): | cairo |
CVE #(s): | CVE-2006-0528
|
| Created: | March 21, 2006 |
Updated: | March 31, 2006 |
| Description: |
The cairo library (libcairo), as used in GNOME Evolution and possibly other
products, allows remote attackers to cause a denial of service (persistent
client crash) via an attached text file that contains "Content-Disposition:
inline" in the header, and a very long line in the body, which causes the
client to repeatedly crash until the e-mail message is manually removed,
possibly due to a buffer overflow, as demonstrated using an XML
attachment. |
| Alerts: |
|
Comments (none posted)
ktools: buffer overflow
| Package(s): | centericq |
CVE #(s): | CVE-2005-3863
|
| Created: | December 7, 2005 |
Updated: | August 29, 2006 |
| Description: |
From the Debian-Testing alert: Mehdi Oudad "deepfear" and Kevin Fernandez "Siegfried" from the Zone-H
Research Team discovered a buffer overflow in kkstrtext.h of the ktools
library, which is included in (at least) centericq and motor. |
| Alerts: |
|
Comments (none posted)
cpio: arbitrary code execution
| Package(s): | cpio |
CVE #(s): | CVE-2005-4268
|
| Created: | January 2, 2006 |
Updated: | May 8, 2007 |
| Description: |
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). |
| Alerts: |
|
Comments (none posted)
crossfire: buffer overflow
| Package(s): | crossfire |
CVE #(s): | CVE-2006-1236
|
| Created: | March 20, 2006 |
Updated: | March 22, 2006 |
| Description: |
A buffer overflow has been discovered in the crossfire game which allows
remote attackers to execute arbitrary code. |
| Alerts: |
|
Comments (none posted)
crossfire: arbitrary code execution
| Package(s): | crossfire |
CVE #(s): | CVE-2006-1010
|
| Created: | March 14, 2006 |
Updated: | April 24, 2006 |
| Description: |
It was discovered that Crossfire, a multiplayer adventure game, performs
insufficient bounds checking on network packets when run in "oldsocketmode",
which may possibly lead to the execution of arbitrary code. |
| Alerts: |
|
Comments (none posted)
curl: heap-based buffer overflow
| Package(s): | curl |
CVE #(s): | CVE-2006-1061
|
| Created: | March 21, 2006 |
Updated: | June 28, 2006 |
| Description: |
Heap-based buffer overflow in cURL and libcURL 7.15.0 through 7.15.2 allows
remote attackers to execute arbitrary commands via a TFTP URL (tftp://)
with a valid hostname and a long path. |
| Alerts: |
|
Comments (none posted)
curl: buffer overflow
| Package(s): | curl |
CVE #(s): | CVE-2005-4077
|
| Created: | December 8, 2005 |
Updated: | March 27, 2006 |
| Description: |
The curl file transfer utility has a buffer overflow vulnerability
in the URL authentication code. If an overly long URL is used,
a buffer overflow can result, allowing for local unauthorized access. |
| Alerts: |
|
Comments (none posted)
cyrus-imapd: buffer overflows
| Package(s): | cyrus-imapd |
CVE #(s): | CAN-2005-0546
|
| Created: | February 23, 2005 |
Updated: | April 9, 2006 |
| Description: |
Cyrus-imapd, prior to version 2.2.12, contains several buffer overflows which could be exploited by an (authenticated) attacker to run code on the server system. |
| Alerts: |
|
Comments (none posted)
dia: missing input sanitizing
| Package(s): | dia |
CVE #(s): | CAN-2005-2966
|
| Created: | October 4, 2005 |
Updated: | April 6, 2006 |
| Description: |
Joxean Koret discovered that the SVG import plugin did not properly
sanitize data read from an SVG file. By tricking an user into opening
a specially crafted SVG file, an attacker could exploit this to
execute arbitrary code with the privileges of the user. |
| Alerts: |
|
Comments (none posted)
drupal: multiple vulnerabilities
| Package(s): | drupal |
CVE #(s): | CVE-2006-1225
CVE-2006-1226
CVE-2006-1227
CVE-2006-1228
|
| Created: | March 17, 2006 |
Updated: | March 22, 2006 |
| Description: |
The Drupal Security Team discovered several vulnerabilities in Drupal,
a fully-featured content management and discussion engine.
- Due to missing input sanitizing a remote attacker could inject headers
of outgoing e-mail messages and use Drupal as a spam proxy. (CVE-2006-1225)
- Missing input sanity checks allows attackers to inject arbitrary web
script or HTML. (CVE-2006-1226)
- Menu items created with the menu.module lacked access control, which
might allow remote attackers to access administrator pages. (CVE-2006-1227)
- Markus Petrux discovered a bug in the session fixation which may allow
remote attackers to gain Drupal user privileges. (CVE-2006-1228)
|
| Alerts: |
|
Comments (none posted)
emacs21: format string vulnerability in "movemail"
| Package(s): | emacs21 |
CVE #(s): | CAN-2005-0100
|
| Created: | February 7, 2005 |
Updated: | May 15, 2006 |
| Description: |
Max Vozeler discovered a format string vulnerability in the "movemail"
utility of Emacs. By sending specially crafted packets, a malicious
POP3 server could cause a buffer overflow, which could be exploited to
execute arbitrary code with the privileges of the user and the "mail"
group. |
| Alerts: |
|
Comments (none posted)
enscript: arbitrary code execution
| Package(s): | enscript |
CVE #(s): | CAN-2004-1184
CAN-2004-1185
CAN-2004-1186
|
| Created: | January 21, 2005 |
Updated: | May 27, 2006 |
| Description: |
Erik Sjölund has discovered several security relevant problems in enscript,
a program to convert ASCII text into Postscript and other formats.
Unsanitized input can cause the execution of arbitrary commands via EPSF
pipe support. Due to missing sanitizing of filenames it is possible that a
specially crafted filename can cause arbitrary commands to be executed.
Multiple buffer overflows can cause the program to crash. |
| Alerts: |
|
Comments (none posted)
evolution: format string issues
Comments (2 posted)
fetchmail: multidrop bug
| Package(s): | fetchmail |
CVE #(s): | CVE-2005-4348
|
| Created: | December 20, 2005 |
Updated: | May 27, 2006 |
| Description: |
Fetchmail contains a bug which allows a malicious mail server to crash the
client by sending a message without headers. This occurs when running in
multidrop mode. |
| Alerts: |
|
Comments (none posted)
flash-plugin: arbitrary code execution
| Package(s): | flash-plugin |
CVE #(s): | CVE-2006-0024
|
| Created: | March 16, 2006 |
Updated: | March 22, 2006 |
| Description: |
The Macromedia Flash Player plugin has an arbitrary code execution
vulnerability that may be triggered by opening a
maliciously created Macromedia Flash file. |
| Alerts: |
|
Comments (none posted)
flex: buffer overflow
| Package(s): | flex |
CVE #(s): | CVE-2006-0459
|
| Created: | March 7, 2006 |
Updated: | March 28, 2006 |
| Description: |
Chris Moore discovered a buffer overflow in a particular class of
lexicographical scanners generated by flex. This could be exploited to
execute arbitrary code by processing specially crafted user-defined
input to an application that uses a flex scanner for parsing. |
| Alerts: |
|
Comments (none posted)
Foomatic: Arbitrary command execution in foomatic-rip
| Package(s): | foomatic |
CVE #(s): | CAN-2004-0801
|
| Created: | September 20, 2004 |
Updated: | May 31, 2006 |
| Description: |
There is a vulnerability in the foomatic-filters package. This
vulnerability is due to insufficient checking of command-line parameters
and environment variables in the foomatic-rip filter. This vulnerability
may allow both local and remote attackers to execute arbitrary commands on
the print server with the permissions of the spooler. |
| Alerts: |
|
Comments (none posted)
gdb: multiple vulnerabilities
| Package(s): | gdb |
CVE #(s): | CAN-2005-1704
CAN-2005-1705
|
| Created: | May 20, 2005 |
Updated: | August 11, 2006 |
| Description: |
Tavis Ormandy of the Gentoo Linux Security Audit Team discovered an integer
overflow in the BFD library, resulting in a heap overflow. A review also
showed that by default, gdb insecurely sources initialization files from
the working directory. Successful exploitation would result in the
execution of arbitrary code on loading a specially crafted object file or
the execution of arbitrary commands. |
| Alerts: |
|
Comments (5 posted)
gnupg: incorrect signature verification
| Package(s): | gnupg |
CVE #(s): | CVE-2006-0049
|
| Created: | March 13, 2006 |
Updated: | May 15, 2006 |
| Description: |
Another vulnerability has been found in
GnuPG. "Signature verification of non-detached signatures may give a
positive result but when extracting the signed data, this data may be
prepended or appended with extra data not covered by the signature. Thus
it is possible for an attacker to take any signed message and inject extra
arbitrary data." |
| Alerts: |
|
Comments (none posted)
gzip: arbitrary command execution
| Package(s): | gzip |
CVE #(s): | CAN-2005-0758
|
| Created: | August 1, 2005 |
Updated: | January 9, 2007 |
| Description: |
zgrep in gzip before 1.3.5 does not handle shell metacharacters like '|'
and '&' properly when they occurred in input file names. This could be
exploited to execute arbitrary commands with user privileges if zgrep is
run in an untrusted directory with specially crafted file names. |
| Alerts: |
|
Comments (2 posted)
ilohamail: missing input sanitizing
| Package(s): | ilohamail |
CVE #(s): | CVE-2005-1120
|
| Created: | March 20, 2006 |
Updated: | March 22, 2006 |
| Description: |
Ulf Härnhammar from the Debian Security Audit Project discovered that
ilohamail, a lightweight multilingual web-based IMAP/POP3 client, does not
always sanitize input provided by users which allows remote attackers to
inject arbitrary web script or HTML. |
| Alerts: |
|
Comments (none posted)
imagemagick: arbitrary command execution
| Package(s): | imagemagick |
CVE #(s): | CVE-2005-4601
CVE-2006-0082
|
| Created: | January 24, 2006 |
Updated: | March 24, 2006 |
| Description: |
Florian Weimer discovered that the delegate code did not correctly
handle file names which embed shell commands (CVE-2005-4601). Daniel
Kobras found a format string vulnerability in the SetImageInfo()
function (CVE-2006-0082). By tricking a user into processing an image
file with a specially crafted file name, these two vulnerabilities
could be exploited to execute arbitrary commands with the user's
privileges. These vulnerability become particularly critical if
malicious images are sent as email attachments and the email client
uses imagemagick to convert/display the images (e. g. Thunderbird and
Gnus). |
| Alerts: |
|
Comments (none posted)
imap: buffer overflow in c-client
| Package(s): | imap |
CVE #(s): | CAN-2003-0297
|
| Created: | February 18, 2005 |
Updated: | April 9, 2006 |
| Description: |
A buffer overflow flaw was found in the c-client IMAP client. An attacker
could create a malicious IMAP server that if connected to by a victim could
execute arbitrary code on the client machine. |
| Alerts: |
|
Comments (none posted)
ipsec-tools: denial of service
| Package(s): | ipsec-tools |
CVE #(s): | CVE-2005-3732
|
| Created: | December 1, 2005 |
Updated: | June 8, 2006 |
| Description: |
ipsec-tools has a remote
denial of service vulnerability in the racoon daemon.
If racoon is running in aggressive mode, it fails to check all peer
payloads during
When the daemon the IKE negotiation phase, allowing a malicious peer
to crash the daemon. One should always be careful around aggressive racoons. |
| Alerts: |
|
Comments (none posted)
kdebase: local root vulnerability
| Package(s): | kdebase |
CVE #(s): | CAN-2005-2494
|
| Created: | September 7, 2005 |
Updated: | August 11, 2006 |
| Description: |
The kdebase package (and kcheckpass in particular) found in KDE versions 3.2.0 through 3.4.2 suffers from a lock file handling error which can enable a local attacker to obtain root access. See this advisory for details. |
| Alerts: |
|
Comments (none posted)
kdelibs: kate backup file permission leak
| Package(s): | kdelibs kate kwrite |
CVE #(s): | CAN-2005-1920
|
| Created: | July 19, 2005 |
Updated: | November 27, 2006 |
| Description: |
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. |
| Alerts: |
|
Comments (none posted)
kernel: multiple vulnerabilities
Comments (none posted)
kernel: multiple vulnerabilities
| Package(s): | kernel |
CVE #(s): | CVE-2006-0741
CVE-2006-0555
|
| Created: | March 2, 2006 |
Updated: | March 23, 2006 |
| Description: |
The Linux kernel has multiple vulnerabilities including
a sanity check problem with sys_mbind that can lead to a local
denial of service, an ELF vulnerability that can crash
Intel EM64T systems and an NFS client panic problem that
can be triggered by direct I/O from a local user. |
| Alerts: |
|
Comments (none posted)
kernel multiple vulnerabilities
| Package(s): | kernel |
CVE #(s): | CVE-2005-3527
CVE-2005-3783
CVE-2005-3784
CVE-2005-3805
CVE-2005-3806
CVE-2005-3808
|
| Created: | January 20, 2006 |
Updated: | April 18, 2006 |
| Description: |
Here's another set of vulnerabilities in the Linux kernel:
- A race condition in the 2.6 kernel could allow a local user to cause a
DoS by triggering a core dump in one thread while another thread has a
pending SIGSTOP (CVE-2005-3527).
- The ptrace functionality in 2.6 kernels prior to 2.6.14.2, using
CLONE_THREAD, does not use the thread group ID to check whether it is
attaching to itself, which could allow local users to cause a DoS
(CVE-2005-3783).
- The auto-reap child process in 2.6 kernels prior to 2.6.15 include
processes with ptrace attached, which leads to a dangling ptrace
reference and allows local users to cause a crash (CVE-2005-3784).
- A locking problem in the POSIX timer cleanup handling on exit on
kernels 2.6.10 to 2.6.14 when running on SMP systems, allows a local
user to cause a deadlock involving process CPU timers (CVE-2005-3805).
- The IPv6 flowlabel handling code in 2.4 and 2.6 kernels prior to
2.4.32 and 2.6.14 modifies the wrong variable in certain circumstances,
which allows local users to corrupt kernel memory or cause a crash by
triggering a free of non-allocated memory (CVE-2005-3806).
- An integer overflow in 2.6.14 and earlier could allow a local user to
cause a hang via 64-bit mmap calls that are not properly handled on a
32-bit system (CVE-2005-3808).
|
| Alerts: |
|
Comments (none posted)
kernel-patch-vserver: missing attribute support
| Package(s): | kernel-patch-vserver util-vserver |
CVE #(s): | CVE-2005-4347
CVE-2005-4418
|
| Created: | March 21, 2006 |
Updated: | March 22, 2006 |
| Description: |
Several vulnerabilities have been discovered in the Debian vserver support
for Linux. Bjørn Steinbrink discovered that the chroot barrier is not set
correctly with util-vserver which may result in unauthorized escapes from a
vserver to the host system. (CVE-2005-4347) The default policy of
util-vserver is set to trust all unknown capabilities instead of
considering them as insecure. (CVE-2005-4418) |
| Alerts: |
|
Comments (none posted)
libapreq2: algorithm weakness
| Package(s): | libapreq2-perl apache2 |
CVE #(s): | CVE-2006-0042
|
| Created: | March 14, 2006 |
Updated: | April 18, 2006 |
| Description: |
An algorithm weakness has been discovered in Apache2::Request, the
generic request library for Apache2 which can be exploited remotely
and cause a denial of service via CPU consumption. |
| Alerts: |
|
Comments (5 posted)
libgadu: memory alignment bug
| Package(s): | libgadu |
CVE #(s): | CAN-2005-2370
|
| Created: | July 29, 2005 |
Updated: | June 25, 2007 |
| Description: |
Szymon Zygmunt and Michal Bartoszkiewicz discovered a memory alignment
error in libgadu (from ekg, console Gadu Gadu client, an instant
messaging program) which is included in gaim, a multi-protocol instant
messaging client, as well. This can not be exploited on the x86
architecture but on others, e.g. on Sparc and lead to a bus error,
in other words a denial of service.
|
| Alerts: |
|
Comments (none posted)
libgd2: buffer overflows in PNG handling
| Package(s): | libgd2 |
CVE #(s): | CAN-2004-0990
CAN-2004-0941
|
| Created: | October 29, 2004 |
Updated: | June 28, 2006 |
| Description: |
Several buffer overflows have been discovered in libgd's PNG handling
functions.
If an attacker tricked a user into loading a malicious PNG image, they
could leverage this into executing arbitrary code in the context of
the user opening image. Most importantly, this library is commonly
used in PHP. One possible target would be a PHP driven photo website
that lets users upload images. Therefore this vulnerability might lead
to privilege escalation to a web server's privileges.
Multiple buffer overflows in the gd graphics library (libgd) 2.0.21 and
earlier may allow remote attackers to execute arbitrary code via malformed
image files that trigger the overflows due to improper calls to the
gdMalloc function. |
| Alerts: |
|
Comments (none posted)
libpam-ldap: authentication bypass
| Package(s): | libpam-ldap |
CVE #(s): | CAN-2005-2641
|
| Created: | August 25, 2005 |
Updated: | October 6, 2006 |
| Description: |
libpam-ldap, the PAM LDAP interface, has a vulnerability in which
it fails to authenticate with an LDAP server which is not configured
properly, allowing an authentication bypass. |
| Alerts: |
|
Comments (none posted)
mod_python: remote access vulnerability
| Package(s): | mod_python |
CVE #(s): | CAN-2005-0088
|
| Created: | February 10, 2005 |
Updated: | April 9, 2006 |
| Description: |
mod_python has a vulnerability in the publisher handler that may allow
a remote user to use a specially crafted URL to allow access to
objects that should be protected. An information leak can result. |
| Alerts: |
|
Comments (none posted)
mozilla: multiple vulnerabilities
| Package(s): | mozilla |
CVE #(s): | CVE-2005-4134
CVE-2006-0292
CVE-2006-0296
|
| Created: | February 2, 2006 |
Updated: | May 4, 2006 |
| Description: |
Mozilla has three new vulnerabilities.
The Javascript interpreter has a problem with
dereferencing objects. A user can visit a specially crafted web page
which can crash the browser or cause it to execute arbitrary code.
The XULDocument.persist() function has a bug that can be triggered by
viewing specially crafted web sites, RDF data can be injected into the
localstore.rdf file, allowing arbitrary javascript code to be executed.
The Mozilla history saving mechanism is vulnerable to a denial of
service attack, visiting sites with extra-long titles can cause a
crash or very slow startup the next time the browser is run. |
| Alerts: |
|
Comments (none posted)
Mozilla Thunderbird: remote code execution and DoS
| Package(s): | mozilla-thunderbird |
CVE #(s): | CVE-2006-0884
|
| Created: | March 3, 2006 |
Updated: | May 4, 2006 |
| Description: |
The WYSIWYG rendering engine in Mozilla Thunderbird 1.0.7 and earlier
allows user-complicit attackers to bypass javascript security settings and
obtain sensitive information or cause a crash via an e-mail containing a
javascript URI in the SRC attribute of an IFRAME tag, which is executed
when the user edits the e-mail. |
| Alerts: |
|
Comments (1 posted)
ncpfs: multiple vulnerabilities
| Package(s): | ncpfs |
CVE #(s): | CAN-2005-0013
CAN-2005-0014
|
| Created: | January 31, 2005 |
Updated: | May 15, 2006 |
| Description: |
Erik Sjolund discovered two vulnerabilities in the programs bundled
with ncpfs: there is a potentially exploitable buffer overflow in
ncplogin (CAN-2005-0014), and due to a flaw in nwclient.c, utilities
using the NetWare client functions insecurely access files with
elevated privileges (CAN-2005-0013). |
| Alerts: |
|
Comments (none posted)
ntp: uses wrong gid
| Package(s): | ntp |
CVE #(s): | CAN-2005-2496
|
| Created: | August 26, 2005 |
Updated: | August 11, 2006 |
| Description: |
When starting xntpd with the -u option and specifying the
group by using a string not a numeric gid the daemon uses
the gid of the user not the group. This problem is now fixed
by this update. |
| Alerts: |
|
Comments (none posted)
openmotif: buffer overflows
| Package(s): | openmotif |
CVE #(s): | CVE-2005-3964
|
| Created: | December 29, 2005 |
Updated: | July 27, 2006 |
| Description: |
The libUil component of the OpenMotif toolkit has a pair of buffer
overflow vulnerabilities that can possibly be used for the execution
of arbitrary code.
|
| Alerts: |
|
Comments (none posted)
OpenSSH: double shell expansion
| Package(s): | openssh |
CVE #(s): | CVE-2006-0225
|
| Created: | January 23, 2006 |
Updated: | July 20, 2006 |
| Description: |
OpenSSH has a double shell expansion vulnerability in local to local and
remote to remote copy with scp. |
| Alerts: |
|
Comments (none posted)
PEAR-Auth: potential authentication bypass
| Package(s): | pear-auth |
CVE #(s): | CVE-2006-0868
|
| Created: | March 17, 2006 |
Updated: | March 22, 2006 |
| Description: |
PEAR-Auth, versions 1.2.4 and before, did not correctly validate data
passed to the DB and LDAP containers. A remote attacker could possibly
exploit this vulnerability to bypass the authentication mechanism by
injecting specially crafted input to the underlying storage containers. |
| Alerts: |
|
Comments (none posted)
PeerCast: buffer overflow
| Package(s): | peercast |
CVE #(s): | CVE-2006-1148
|
| Created: | March 21, 2006 |
Updated: | March 22, 2006 |
| Description: |
Multiple stack-based buffer overflows in the procConnectArgs function in
servmgr.cpp in PeerCast before 0.1217 allow remote attackers to execute
arbitrary code via an HTTP GET request with a long (1) parameter name or
(2) value in a URL, which triggers the overflow in the nextCGIarg function
in servhs.cpp. |
| Alerts: |
|
Comments (none posted)
perl: setuid vulnerabilities
| Package(s): | perl |
CVE #(s): | CAN-2005-0155
CAN-2005-0156
|
| Created: | February 2, 2005 |
Updated: | August 11, 2006 |
| Description: |
There are two vulnerabilities with perl when it is used in a setuid mode. The |
