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Gentoo Linux Security Advisory                           GLSA 201311-21
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: cpio: Arbitrary code execution
     Date: November 28, 2013
     Bugs: #314663
       ID: 201311-21

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Synopsis
========

A heap-based buffer overflow in cpio might allow a remote rmt server to
execute arbitrary code or cause a Denial of Service condition.

Background
==========

GNU cpio copies files into or out of a cpio or tar archive.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-arch/cpio                 < 2.11                     >= 2.11

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

Cpio contains a heap-based buffer overflow in the rmt_read__ function
in lib/rtapelib.c.

Impact
======

A remote server could sending more data than was requested, related to
archive filenames that contain a : (colon) character, possibly
resulting in execution of arbitrary code or a Denial of Service
condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All cpio users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-arch/cpio-2.11"

References
==========

[ 1 ] CVE-2010-0624
      http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2010-0624

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

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

 http://security.gentoo.org/glsa/glsa-201311-21.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 2013 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