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


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
6.29% (91st percentile)

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  • Snyk IDSNYK-AMZN201803-PCRE-1715184
  • published27 Sept 2021
  • disclosed17 Mar 2016

Introduced: 17 Mar 2016

CVE-2016-3191  (opens in a new tab)
CWE-119  (opens 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.

CVSS Base Scores

version 3.1