GLSA 200906-01: libpng: Information disclosure

http://security.gentoo.org/

Severity:	low
Title:	libpng: Information disclosure
Date:	06/27/2009
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	Architecture(s)
media-libs/libpng	< 1.2.37	>= 1.2.37	All supported architectures

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 ">=media-libs/libpng-1.2.37"

References

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 https://bugs.gentoo.org.