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Algorithmic Complexity Affecting pcre package, versions <0:8.32-15.el7_2.1

high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    EPSS 2.73% (91st percentile)
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NVD
9.8 critical
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Red Hat
4.3 medium

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  • Snyk ID SNYK-CENTOS7-PCRE-2065979
  • published 26 Jul 2021
  • disclosed 23 Nov 2015
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Introduced: 23 Nov 2015

CVE-2015-8391 Open this link in a new tab
CWE-407 Open this link in a new tab

How to fix?

Upgrade Centos:7 pcre to version 0:8.32-15.el7_2.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pcre package and not the pcre package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

The pcre_compile function in pcre_compile.c in PCRE before 8.38 mishandles certain [: nesting, which allows remote attackers to cause a denial of service (CPU consumption) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

References