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GD: User-assisted execution of arbitrary code


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201006-16 / gd
Release Date June 03, 2010
Latest Revision June 03, 2010: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
media-libs/gd < 2.0.35-r1 >= 2.0.35-r1 All supported architectures

Related bugreports: #292130


The GD library is prone to a buffer overflow vulnerability.

2.  Impact Information


GD is a graphic library for fast image creation.


Tomas Hoger reported that the _gdGetColors() function in gd_gd.c does not properly verify the colorsTotal struct member, possibly leading to a buffer overflow.


A remote attacker could entice a user to open a specially crafted image file with a program using the GD library, possibly resulting in the remote execution of arbitrary code with the privileges of the user running the application, or a Denial of Service condition.

3.  Resolution Information


There is no known workaround at this time.


All GD users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/gd-2.0.35-r1"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since November 21, 2009. It is likely that your system is already no longer affected by this issue.

4.  References


Page updated June 03, 2010

Summary: This is a Gentoo Linux Security Advisory

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