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Kiax: Arbitrary code execution


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200606-30 / kiax
Release Date June 30, 2006
Latest Revision June 30, 2006: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-misc/kiax < 0.8.5_p1 >= 0.8.5_p1 All supported architectures

Related bugreports: #136099


A security vulnerability in the iaxclient library could lead to the execution of arbitrary code by a remote attacker.

2.  Impact Information


Kiax is a graphical softphone supporting the IAX protocol (Inter Asterisk eXchange), which allows PC users to make VoIP calls to Asterisk servers.


The iax_net_read function in the iaxclient library fails to properly handle IAX2 packets with truncated full frames or mini-frames. These frames are detected in a length check but processed anyway, leading to buffer overflows.


By sending a specially crafted IAX2 packet, an attacker could execute arbitrary code with the permissions of the user running Kiax.

3.  Resolution Information


There is no known workaround at this time.


All Kiax users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/kiax-0.8.5_p1"

4.  References


Page updated June 30, 2006

Summary: This is a Gentoo Linux Security Advisory

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