[ GLSA 200906-01 ] libpng: Information disclosure

2009-06-29T00:00:00
ID SECURITYVULNS:DOC:22103
Type securityvulns
Reporter Securityvulns
Modified 2009-06-29T00:00:00

Description


Gentoo Linux Security Advisory GLSA 200906-01


                                        http://security.gentoo.org/

Severity: Low Title: libpng: Information disclosure Date: June 27, 2009 Bugs: #272970 ID: 200906-01


Synopsis

A vulnerability has been discovered in libpng that allows for information disclosure.

Background

libpng is the official PNG reference library used to read, write and manipulate PNG images.

Affected packages

-------------------------------------------------------------------
 Package            /  Vulnerable  /                    Unaffected
-------------------------------------------------------------------

1 media-libs/libpng < 1.2.37 >= 1.2.37

Description

Jeff Phillips discovered that libpng does not properly parse 1-bit interlaced images with width values that are not divisible by 8, which causes libpng to include uninitialized bits in certain rows of a PNG file.

Impact

A remote attacker might entice a user to open a specially crafted PNG file, possibly resulting in the disclosure of sensitive memory portions.

Workaround

There is no known workaround at this time.

Resolution

All libpng users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=media-libs/libpng-1.2.37&quot;

References

[ 1 ] CVE-2009-2042 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2042

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200906-01.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@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