[gentoo-announce] [ GLSA 200908-07 ] Perl Compress::Raw modules: Denial of Service

[news 28]

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Gentoo Linux Security Advisory GLSA 200908-07

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http://security.gentoo.org/

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Severity: Normal

Title: Perl Compress::Raw modules: Denial of Service

Date: August 18, 2009

Bugs: #273141, #281955

ID: 200908-07

 

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Synopsis

========

 

An off-by-one error in Compress::Raw::Zlib and Compress::Raw::Bzip2

might lead to a Denial of Service.

 

Background

==========

 

Compress::Raw::Zlib and Compress::Raw::Bzip2 are Perl low-level

interfaces to the zlib and bzip2 compression libraries.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 perl-core/Compress-Raw-Zlib < 2.020 >= 2.020

2 perl-core/Compress-Raw-Bzip2 < 2.020 >= 2.020

-------------------------------------------------------------------

2 affected packages on all of their supported architectures.

-------------------------------------------------------------------

 

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.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

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

 

# emerge --sync

# emerge --ask --oneshot --verbose

=perl-core/Compress-Raw-Zlib-2.020

 

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

 

# emerge --sync

# emerge --ask --oneshot --verbose

=perl-core/Compress-Raw-Bzip2-2.020

 

References

==========

 

[ 1 ] CVE-2009-1391

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1391

[ 2 ] CVE-2009-1884

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1884

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200908-07.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 ( -at -) gentoo.org or alternatively, you may file a bug at

https://bugs.gentoo.org.

 

License

=======

 

Copyright 2009 Gentoo Foundation, Inc; referenced text

belongs to its owner(s).

 

The contents of this document are licensed under the

Creative Commons - Attribution / Share Alike license.

 

http://creativecommons.org/licenses/by-sa/2.5