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

medium

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.15% (51st percentile)
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NVD
7.5 high
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SUSE
6.8 medium
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Red Hat
7.5 high

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  • Snyk ID SNYK-CENTOS8-PCRE2-2075193
  • published 26 Jul 2021
  • disclosed 28 Jul 2019
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Introduced: 28 Jul 2019

CVE-2019-20454 Open this link in a new tab
CWE-125 Open this link in a new tab

How to fix?

Upgrade Centos:8 pcre2 to version 0:10.32-2.el8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pcre2 package and not the pcre2 package as distributed by Centos. See How to fix? for Centos: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.