AMD64 x86 emulation GTK+ library: User-assisted execution of arbitrary code

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Updated December 30, 2007

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200712-24 / emul-linux-x86-gtklibs
Release Date	December 30, 2007
Latest Revision	December 30, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-emulation/emul-linux-x86-gtklibs	< 20071214	>= 20071214	AMD64

Related bugreports: #201860

Synopsis

Multiple integer overflow vulnerabilities in the AMD64 x86 emulation GTK+ libraries may result in the execution of arbitrary code in applications using Cairo.

2. Impact Information

Background

Cairo is a 2D vector graphics library with cross-device output support. The AMD64 x86 emulation GTK+ library packages Cairo libraries for 32bit x86 emulation on AMD64.

Description

The Cairo versions used by the AMD64 x86 emulation GTK+ libraries were vulnerable to integer overflow vulnerabilities (GLSA 200712-04).

Impact

A remote attacker could entice a user to view or process a specially crafted PNG image file in an application linked against Cairo, possibly leading to the execution of arbitrary code with the privileges of the user running the application.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All AMD64 x86 emulation GTK+ library users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-emulation/emul-linux-x86-gtklibs-20071214"

4. References

GLSA 200712-04