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libzip: Multiple vulnerabilities


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201203-23 / libzip
Release Date March 29, 2012
Latest Revision March 29, 2012: 1
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
dev-libs/libzip < 0.10.1 >= 0.10.1 All supported architectures

Related bugreports: #409117


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

2.  Impact Information


libzip is a library for manipulating zip archives.


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).


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.

3.  Resolution Information


There is no known workaround at this time.


All libzip users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

4.  References


Page updated March 29, 2012

Summary: This is a Gentoo Linux Security Advisory

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