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Gentoo Linux Security Advisory                           GLSA 201908-22
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Patch: Multiple vulnerabilities
     Date: August 18, 2019
     Bugs: #690136
       ID: 201908-22

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Synopsis
========

Multiple vulnerabilities have been found in Patch, the worst of which
could result in the arbitrary execution of code.

Background
==========

Patch takes a patch file containing a difference listing produced by
the diff program and applies those differences to one or more original
files, producing patched versions.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  sys-devel/patch             < 2.7.6-r4               >= 2.7.6-r4 

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

Multiple vulnerabilities have been discovered in Patch. Please review
the CVE identifiers referenced below for details.

Impact
======

A local attacker could pass a specially crafted diff file to Patch,
possibly resulting in a Denial of Service condition or arbitrary code
execution.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Patch users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=sys-devel/patch-2.7.6-r4"

References
==========

[ 1 ] CVE-2019-13636
      https://nvd.nist.gov/vuln/detail/CVE-2019-13636
[ 2 ] CVE-2019-13638
      https://nvd.nist.gov/vuln/detail/CVE-2019-13638

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

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

 https://security.gentoo.org/glsa/201908-22

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 2019 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.

https://creativecommons.org/licenses/by-sa/2.5