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CVE-2022-1586

Published: 16 May 2022

An out-of-bounds read vulnerability was discovered in the PCRE2 library in the compile_xclass_matchingpath() function of the pcre2_jit_compile.c file. This involves a unicode property matching issue in JIT-compiled regular expressions. The issue occurs because the character was not fully read in case-less matching within JIT.

Priority

Low

Cvss 3 Severity Score

9.1

Score breakdown

Status

Package Release Status
pcre2
Launchpad, Ubuntu, Debian
bionic
Released (10.31-2ubuntu0.1~esm1)
focal
Released (10.34-7ubuntu0.1)
impish Ignored
(reached end-of-life)
jammy
Released (10.39-3ubuntu0.1)
kinetic Not vulnerable
(10.40-1)
upstream
Released (10.40-1)
xenial Needs triage

Patches:
upstream: https://github.com/PCRE2Project/pcre2/commit/50a51cb7e67268e6ad417eb07c9de9bfea5cc55a (pcre2-10.40)
upstream: https://github.com/PCRE2Project/pcre2/commit/d4fa336fbcc388f89095b184ba6d99422cfc676c

Severity score breakdown

Parameter Value
Base score 9.1
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H