GLSA 200408-03: libpng: Numerous vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	libpng: Numerous vulnerabilities
Date:	08/05/2004
Bugs:	#59424
ID:	200408-03

Synopsis

libpng contains numerous vulnerabilities potentially allowing an attacker to perform a Denial of Service attack or even execute arbitrary code.

Background

libpng is a standard library used to process PNG (Portable Network Graphics) images. It is used by several other programs, including web browsers and potentially server processes.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
media-libs/libpng	<= 1.2.5-r7	>= 1.2.5-r8	All supported architectures

Description

libpng contains numerous vulnerabilities including null pointer dereference errors and boundary errors in various functions.

Impact

An attacker could exploit these vulnerabilities to cause programs linked against the library to crash or execute arbitrary code with the permissions of the user running the vulnerable program, which could be the root user.

Workaround

There is no known workaround at this time. All users are encouraged to upgrade to the latest available version.

Resolution

All libpng users should upgrade to the latest stable version:

    # emerge sync

    # emerge -pv ">=media-libs/libpng-1.2.5-r8"
    # emerge ">=media-libs/libpng-1.2.5-r8"

You should also run revdep-rebuild to rebuild any packages that depend on older versions of libpng :


    # revdep-rebuild

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200408-03.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.