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[gentoo-announce] [ GLSA 201203-23 ] libzip: Multiple vulnerabilities

Posted on 29 March 2012
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201203-23
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http://security.gentoo.org/
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Severity: Normal
Title: libzip: Multiple vulnerabilities
Date: March 29, 2012
Bugs: #409117
ID: 201203-23

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Synopsis
========
Multiple vulnerabilities have been found in libzip, the worst of which
might allow execution of arbitrary code.

Background
==========
libzip is a library for manipulating zip archives.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/libzip < 0.10.1 >= 0.10.1

Description
===========
Two vulnerabilities have been found in the "_zip_readcdir()" function
in zip_open.c of libzip:

* An incorrect loop construct, which could cause a heap-based buffer
overflow (CVE-2012-1162).
* An integer overflow, which may not restrict operations within the
memory buffer (CVE-2012-1163).

Impact
======
A remote attacker could entice a user to open a specially crafted ZIP
file, possibly resulting in execution of arbitrary code with the
privileges of the process, a Denial of Service condition, or
information leaks.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All libzip users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libzip-0.10.1"

References
==========
[ 1 ] CVE-2012-1162
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1162
[ 2 ] CVE-2012-1163
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1163

Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201203-23.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@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======
Copyright 2012 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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