CVE-2018-1000156

Publication date 6 April 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
patch	17.10 artful	Fixed 2.7.5-1ubuntu0.2
	16.04 LTS xenial	Fixed 2.7.5-1ubuntu0.16.04.1
	14.04 LTS trusty	Fixed 2.7.1-4ubuntu2.4

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
patch	Upstream: ?id=123

Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.8 · High

Base metrics

Parameter	Value
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	7.8 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3624-1
Patch vulnerabilities
10 April 2018

USN-3624-2
Patch vulnerabilities
16 April 2018