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PostPosted: Mon Dec 05, 2016 2:26 am    Post subject: [ GLSA 201612-12 ] Patch Reply with quote

Gentoo Linux Security Advisory

Title: Patch: Denial of Service (GLSA 201612-12)
Severity: normal
Exploitable: local
Date: December 05, 2016
Bug(s): #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: sys-devel/patch
Vulnerable: < 2.7.4
Unaffected: >= 2.7.4
Architectures: 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:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-devel/patch-2.7.4"
   
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