Gentoo Logo

Perl Compress::Raw modules: Denial of Service

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200908-07 / Compress-Raw-Zlib Compress-Raw-Bzip2
Release Date August 18, 2009
Latest Revision August 18, 2009: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
perl-core/Compress-Raw-Zlib < 2.020 >= 2.020 All supported architectures
perl-core/Compress-Raw-Bzip2 < 2.020 >= 2.020 All supported architectures

Related bugreports: #273141, #281955

Synopsis

An off-by-one error in Compress::Raw::Zlib and Compress::Raw::Bzip2 might lead to a Denial of Service.

2.  Impact Information

Background

Compress::Raw::Zlib and Compress::Raw::Bzip2 are Perl low-level interfaces to the zlib and bzip2 compression libraries.

Description

Leo Bergolth reported an off-by-one error in the inflate() function in Zlib.xs of Compress::Raw::Zlib, possibly leading to a heap-based buffer overflow (CVE-2009-1391).

Paul Marquess discovered a similar vulnerability in the bzinflate() function in Bzip2.xs of Compress::Raw::Bzip2 (CVE-2009-1884).

Impact

A remote attacker might entice a user or automated system (for instance running SpamAssassin or AMaViS) to process specially crafted files, possibly resulting in a Denial of Service condition.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

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

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=perl-core/Compress-Raw-Zlib-2.020"

All Compress::Raw::Bzip2 users should upgrade to the latest version:

Code Listing 3.2: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=perl-core/Compress-Raw-Bzip2-2.020"

4.  References



Print

Page updated August 18, 2009

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.

Copyright 2001-2014 Gentoo Foundation, Inc. Questions, Comments? Contact us.