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CVE-2018-20969

Published: August 31, 2023Last modified: July 22, 2025

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.

Severity score breakdown

ParameterValue
Base score7.8
Attack VectorLOCAL
Attack complexityLOW
Privileges requiredNONE
User interactionREQUIRED
ScopeUNCHANGED
ConfidentialityHIGH
Integrity impactHIGH
Availability impactHIGH
VectorCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Status

ProductReleasePackageStatus
Alpaquita Linux23 LTSpatchNot affected (2.7.6-r9)
StreampatchNot affected (2.7.6-r10)
Hardened Containers23 LTSpatchNot affected (2.7.6-r9)
StreampatchNot affected (2.7.6-r10)

References

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