Out-of-bounds Read Affecting pcre2-tools package, versions <0:10.32-2.el8


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.14% (51st percentile)

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  • Snyk IDSNYK-ALMALINUX8-PCRE2TOOLS-5625034
  • published28 May 2023
  • disclosed8 Sept 2020

Introduced: 8 Sep 2020

CVE-2019-20454  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 pcre2-tools to version 0:10.32-2.el8 or higher.
This issue was patched in ALSA-2020:4539.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pcre2-tools package and not the pcre2-tools package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1