bzip2: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201301-05 / bzip2
Release Date	January 09, 2013
Latest Revision	January 09, 2013: 1
Impact	normal
Exploitable	local

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-arch/bzip2	< 1.0.6	>= 1.0.6	All supported architectures

Related bugreports: #338215

Synopsis

An integer overflow vulnerability has been found in bzip2 and could result in execution of arbitrary code or Denial of Service.

2. Impact Information

Background

bzip2 is a high-quality data compressor used extensively by Gentoo Linux.

Description

An integer overflow vulnerability has been discovered in bzip2. Please review the CVE identifier referenced below for details.

Impact

A remote attacker could entice a user to open a specially crafted compressed file using bzip2, possibly resulting in execution of arbitrary code with the privileges of the process, or a Denial of Service condition.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All bzip2 users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-arch/bzip2-1.0.6"

4. References

CVE-2010-0405

Page updated January 09, 2013

Summary: This is a Gentoo Linux Security Advisory

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