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Out-of-bounds Read Affecting pcre2 package, versions *

low

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-UBUNTU1804-PCRE2-548921
  • published 14 Feb 2020
  • disclosed 14 Feb 2020
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Introduced: 14 Feb 2020

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

How to fix?

There is no fixed version for Ubuntu:18.04 pcre2.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pcre2 package and not the pcre2 package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 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.