Compress::Zlib: Buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200508-01 / Compress-Zlib
Release Date	August 01, 2005
Latest Revision	May 28, 2009: 02
Impact	high
Exploitable	remote

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

Related bugreports: #100540

Synopsis

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

2. Impact Information

Background

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

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.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

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

Code Listing 3.1: Resolution

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

4. References

Page updated August 01, 2005

Summary: This is a Gentoo Linux Security Advisory

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