GLSA 200508-01: Compress::Zlib: Buffer overflow

http://security.gentoo.org/

Severity:	high
Title:	Compress::Zlib: Buffer overflow
Date:	08/01/2005
Bugs:	#100540
ID:	200508-01

Synopsis

Compress::Zlib is vulnerable to a buffer overflow which could potentially lead to execution of arbitrary code.

Background

The Compress::Zlib is a Perl module which provides an interface to the zlib compression library.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
perl-core/Compress-Zlib	< 1.35	>= 1.35	All supported architectures

Description

Compress::Zlib 1.34 contains a local vulnerable version of zlib, which may lead to a buffer overflow.

Impact

By creating a specially crafted compressed data stream, attackers can overwrite data structures for applications that use Compress::Zlib, resulting in a Denial of Service and potentially arbitrary code execution.

Workaround

There is no known workaround at this time.

Resolution

All Compress::Zlib users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=perl-core/Compress-Zlib-1.35"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200508-01.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.