Comix: Multiple vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200804-29 / comix
Release Date	April 25, 2008
Latest Revision	April 25, 2008: 01
Impact	normal
Exploitable	local, remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-gfx/comix	< 3.6.4-r1	>= 3.6.4-r1	All supported architectures

Related bugreports: #215694

Synopsis

Multiple vulnerabilities in Comix may lead to execution of arbitrary commands and a Denial of Service.

2. Impact Information

Background

Comix is a GTK comic book viewer.

Description

Comix does not properly sanitize filenames containing shell metacharacters when they are passed to the rar, unrar, or jpegtran programs (CVE-2008-1568). Comix also creates directories with predictable names (CVE-2008-1796).

Impact

A remote attacker could exploit the first vulnerability by enticing a user to use Comix to open a file with a specially crafted filename, resulting in the execution of arbitrary commands. The second vulnerability could be exploited by a local attacker to cause a Denial of Service by creating a file or directory with the same filename as the predictable filename used by Comix.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All Comix users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-gfx/comix-3.6.4-r1"

4. References

Updated April 25, 2008

Summary: This is a Gentoo Linux Security Advisory

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