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Gentoo Linux Security Advisory                           GLSA 201701-40
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: xdelta: User-assisted execution of arbitrary code
     Date: January 17, 2017
     Bugs: #574408
       ID: 201701-40

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Synopsis
========

A buffer overflow in xdelta might allow remote attackers to execute
arbitrary code.

Background
==========

Xdelta is a C library and command-line tool for delta compression using
VCDIFF/RFC 3284 streams.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-util/xdelta              < 3.0.10                  >= 3.0.10

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

A buffer overflow can be triggered within xdelta when ran against a
malicious input file.

Impact
======

A remote attacker could coerce the victim to run xdelta against a
malicious input file. This may be leveraged by an attacker to crash
xdelta and gain control of program execution.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All xdelta users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-util/xdelta-3.0.10"

References
==========

[ 1 ] CVE-2014-9765
      http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9765

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

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

 https://security.gentoo.org/glsa/201701-40

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 2017 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