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Gaim: Denial of Service and buffer overflow vulnerabilties


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200505-09 / gaim
Release Date May 12, 2005
Latest Revision May 12, 2005: 01
Impact high
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-im/gaim < 1.3.0 >= 1.3.0 All supported architectures

Related bugreports: #91862


Gaim contains two vulnerabilities, potentially resulting in the execution of arbitrary code or Denial of Service.

2.  Impact Information


Gaim is a full featured instant messaging client which handles a variety of instant messaging protocols.


Stu Tomlinson discovered that Gaim is vulnerable to a remote stack based buffer overflow when receiving messages in certain protocols, like Jabber and SILC, with a very long URL (CAN-2005-1261). Siebe Tolsma discovered that Gaim is also vulnerable to a remote Denial of Service attack when receiving a specially crafted MSN message (CAN-2005-1262).


A remote attacker could cause a buffer overflow by sending an instant message with a very long URL, potentially leading to the execution of malicious code. By sending a SLP message with an empty body, a remote attacker could cause a Denial of Service or crash of the Gaim client.

3.  Resolution Information


There are no known workarounds at this time.


All Gaim users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/gaim-1.3.0"

4.  References


Page updated May 12, 2005

Summary: This is a Gentoo Linux Security Advisory

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