Amazon Linux 2 : pcre2 (ALAS-2022-1871)

critical Nessus Plugin ID 167235


The remote Amazon Linux 2 host is missing a security update.


The version of pcre2 installed on the remote host is prior to 10.23-11. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2022-1871 advisory.

- 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. (CVE-2022-1586)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Run 'yum update pcre2' to update your system.

See Also

Plugin Details

Severity: Critical

ID: 167235

File Name: al2_ALAS-2022-1871.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/9/2022

Updated: 10/5/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information


Risk Factor: Medium

Score: 6.0


Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2022-1586


Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.4

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

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:pcre2, p-cpe:/a:amazon:linux:pcre2-debuginfo, p-cpe:/a:amazon:linux:pcre2-devel, p-cpe:/a:amazon:linux:pcre2-static, p-cpe:/a:amazon:linux:pcre2-tools, p-cpe:/a:amazon:linux:pcre2-utf16, p-cpe:/a:amazon:linux:pcre2-utf32, cpe:/o:amazon:linux:2

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/31/2022

Vulnerability Publication Date: 5/11/2022

Reference Information

CVE: CVE-2022-1586