GLSA-200903-12 : OptiPNG: User-assisted execution of arbitrary code

This script is Copyright (C) 2009-2015 Tenable Network Security, Inc.

Synopsis :

The remote Gentoo host is missing one or more security-related

Description :

The remote host is affected by the vulnerability described in GLSA-200903-12
(OptiPNG: User-assisted execution of arbitrary code)

Roy Tam reported a use-after-free vulnerability in the
GIFReadNextExtension() function in lib/pngxtern/gif/gifread.c leading
to a memory corruption when reading a GIF image.

Impact :

A remote attacker could entice a user to process a specially crafted
GIF image, possibly resulting in the execution of arbitrary code with
the privileges of the user running the application, or a Denial of

Workaround :

There is no known workaround at this time.

See also :

Solution :

All OptiPNG users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=media-gfx/optipng-0.6.2-r1'

Risk factor :

High / CVSS Base Score : 9.3
CVSS Temporal Score : 8.1
Public Exploit Available : false

Family: Gentoo Local Security Checks

Nessus Plugin ID: 35810 (gentoo_GLSA-200903-12.nasl)

Bugtraq ID: 33873

CVE ID: CVE-2009-0749