[ GLSA 200906-01 ] libpng: Information disclosure

2009-06-2900:00:00

vulners.com

JSON

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
[email protected] or alternatively, you may file a bug at
http://bugs.gentoo.org.