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CVE-2019-20838

Published: 15 June 2020

libpcre in PCRE before 8.43 allows a subject buffer over-read in JIT when UTF is disabled, and \X or \R has more than one fixed quantifier, a related issue to CVE-2019-20454.

Priority

Low

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
pcre3
Launchpad, Ubuntu, Debian
bionic
Released (2:8.39-9ubuntu0.1)
eoan Ignored
(end of life)
focal
Released (2:8.39-12ubuntu0.1)
upstream
Released (8.43)
hirsute Ignored
(end of life)
groovy Ignored
(end of life)
kinetic Ignored
(end of life, was needed)
xenial Not vulnerable
(code not present)
jammy
Released (2:8.39-13ubuntu0.22.04.1)
trusty Not vulnerable
(code not present)
impish
Released (2:8.39-13ubuntu0.21.10.1)
lunar Ignored
(end of life, was needed)
mantic Needed

Patches:
upstream: https://vcs.pcre.org/pcre?view=revision&revision=1740

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H