[gentoo-announce] [ GLSA 200903-12 ] OptiPNG: User-assisted execution of arbitrary code

[news 28]

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Gentoo Linux Security Advisory GLSA 200903-12

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http://security.gentoo.org/

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Severity: Normal

Title: OptiPNG: User-assisted execution of arbitrary code

Date: March 09, 2009

Bugs: #260265

ID: 200903-12

 

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Synopsis

========

 

A vulnerability in OptiPNG might result in user-assisted execution of

arbitrary code.

 

Background

==========

 

OptiPNG is a PNG optimizer that recompresses image files to a smaller

size, without losing any information.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 media-gfx/optipng < 0.6.2-r1 >= 0.6.2-r1

 

Description

===========

 

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

Service.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All OptiPNG users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=media-gfx/optipng-0.6.2-r1"

 

References

==========

 

[ 1 ] CVE-2009-0749

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0749

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200903-12.xml

 

Concerns?

=========

 

Security is a primary focus of Gentoo Linux and ensuring the

confidentiality and security of our users machines is of utmost

importance to us. Any security concerns should be addressed to

security ( -at -) gentoo.org or alternatively, you may file a bug at

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2009 Gentoo Foundation, Inc; referenced text

belongs to its owner(s).

 

The contents of this document are licensed under the

Creative Commons - Attribution / Share Alike license.

 

http://creativecommons.org/licenses/by-sa/2.5