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Algorithmic Complexity Affecting pcre package, versions <0:8.21-7.8.amzn1

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-AMZN201803-PCRE-6038195
  • published 28 Oct 2023
  • disclosed 2 Dec 2015
Report a new vulnerability Found a mistake?

Introduced: 2 Dec 2015

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

How to fix?

Upgrade Amazon-Linux:2018.03 pcre to version 0:8.21-7.8.amzn1 or higher.
This issue was patched in ALAS-2018-1076.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pcre package and not the pcre package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 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