Gentoo: zziplib Buffer Overflow
Posted by Benjamin D. Thomas   
Gentoo The zziplib library contains a buffer overflow vulnerability that could lead to user-assisted remote execution of arbitrary code.
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Gentoo Linux Security Advisory                           GLSA 200704-05
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: zziplib: Buffer Overflow
      Date: April 03, 2007
      Bugs: #171441
        ID: 200704-05

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Synopsis
========

The zziplib library contains a buffer overflow vulnerability that could
lead to user-assisted remote execution of arbitrary code.

Background
==========

The zziplib library is a lightweight library for extracting data from
files archived in a single zip file.

Affected packages
=================

    -------------------------------------------------------------------
     Package           /  Vulnerable  /                     Unaffected
    -------------------------------------------------------------------
  1  dev-libs/zziplib      < 0.13.49                        >= 0.13.49

Description
===========

dmcox dmcox discovered a boundary error in the zzip_open_shared_io()
function from zzip/file.c .

Impact
======

A remote attacker could entice a user to run a zziplib function with an
overly long string as an argument which would trigger the buffer
overflow and may lead to the execution of arbitrary code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All zziplib users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/zziplib-0.13.49"

References
==========

  [ 1 ] CVE-2007-1614
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1614

Availability
============

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

  http://security.gentoo.org/glsa/glsa-200704-05.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
http://bugs.gentoo.org.

License
=======

Copyright 2007 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