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Improper Input Validation Affecting patch package, versions <2.7.5-1ubuntu0.16.04.1

Severity

 Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
5.33% (93rd percentile)

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  • Snyk IDSNYK-UBUNTU1604-PATCH-303849
  • published6 Apr 2018
  • disclosed6 Apr 2018
Report a new vulnerability Found a mistake?

Introduced: 6 Apr 2018

CVE-2018-1000156  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 patch to version 2.7.5-1ubuntu0.16.04.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream patch package and not the patch package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_PROGRAM invocation (using ed) can result in code execution. This attack appear to be exploitable via a patch file processed via the patch utility. This is similar to FreeBSD's CVE-2015-1418 however although they share a common ancestry the code bases have diverged over time.

References