VULNERABILITY INTELLIGENCE

CVE-2018-20969

CVSS score7.8 HIGH
EPSS probability2.68%
CISA KEVNot currently listed
Published2019-08-16
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.

Weakness classification

  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Primary references