[gentoo-announce] [ GLSA 200804-02 ] bzip2: Denial of Service

[news 28]

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Gentoo Linux Security Advisory GLSA 200804-02

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http://security.gentoo.org/

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Severity: Normal

Title: bzip2: Denial of Service

Date: April 02, 2008

Bugs: #213820

ID: 200804-02

 

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Synopsis

========

 

A buffer overread vulnerability has been discovered in Bzip2.

 

Background

==========

 

bzip2 is a free and open source lossless data compression program.

 

Affected packages

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

 

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

Package / Vulnerable / Unaffected

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

1 app-arch/bzip2 < 1.0.5 >= 1.0.5

 

Description

===========

 

The Oulu University discovered that bzip2 does not properly check

offsets provided by the bzip2 file, leading to a buffer overread.

 

Impact

======

 

Remote attackers can entice a user or automated system to open a

specially crafted file that triggers a buffer overread, causing a

Denial of Service. libbz2 and programs linking against it are also

affected.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All bzip2 users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=app-arch/bzip2-1.0.5"

 

References

==========

 

[ 1 ] CVE-2008-1372

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1372

 

Availability

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

 

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

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200804-02.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

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2008 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

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