Alibaba Cloud Linux 3 : 0050: pcre2 (ALINUX3-SA-2022:0050)

high Nessus Plugin ID 236606

Synopsis

The remote Alibaba Cloud Linux host is missing one or more security updates.

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2022:0050 advisory.

Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

CVE-2019-20454:
An out-of-bounds read was discovered in PCRE before 10.34 when the pattern \X is JIT compiled and used to match specially crafted subjects in non-UTF mode. Applications that use PCRE to parse untrusted input may be vulnerable to this flaw, which would allow an attacker to crash the application. The flaw occurs in do_extuni_no_utf in pcre2_jit_compile.c.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

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

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 236606

File Name: alinux3_sa_2022-0050.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2019-20454

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2-tools, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2-utf16-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2-debugsource, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2-utf16, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2-static, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2-tools-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2-utf32, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2-utf32-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:pcre2-debuginfo

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/8/2020

Vulnerability Publication Date: 2/14/2020

Reference Information

CVE: CVE-2019-20454

Detections

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