GLSA 201203-23: libzip: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	libzip: Multiple vulnerabilities
Date:	03/29/2012
Bugs:	#409117
ID:	201203-23

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	Architecture(s)
dev-libs/libzip	< 0.10.1	>= 0.10.1	All supported architectures

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

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.