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Out-of-Bounds Affecting pcre package, versions <0:8.21-7.8.amzn1

high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required

    Threat Intelligence

    EPSS 15.14% (96th percentile)
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NVD
9.8 critical
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Red Hat
6.3 medium

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  • Snyk ID SNYK-AMZN201803-PCRE-1715184
  • published 27 Sep 2021
  • disclosed 17 Mar 2016
Report a new vulnerability Found a mistake?

Introduced: 17 Mar 2016

CVE-2016-3191 Open this link in a new tab
CWE-119 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 compile_branch function in pcre_compile.c in PCRE 8.x before 8.39 and pcre2_compile.c in PCRE2 before 10.22 mishandles patterns containing an (*ACCEPT) substring in conjunction with nested parentheses, which allows remote attackers to execute arbitrary code or cause a denial of service (stack-based buffer overflow) via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror, aka ZDI-CAN-3542.