GLSA 201612-12: Patch: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	Patch: Denial of Service
Date:	12/05/2016
Bugs:	#538658
ID:	201612-12

Synopsis

Patch is vulnerable to a locally generated Denial of Service condition.

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	Architecture(s)
sys-devel/patch	< 2.7.4	>= 2.7.4	All supported architectures

Description

Due to a flaw in Patch, the application can enter an infinite loop when processing a specially crafted diff file.

Impact

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

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-2.7.4"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201612-12.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.