Out-of-Bounds Affecting php56-mssql package, versions <0:5.6.32-1.135.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    1.61% (88th percentile)

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  • Snyk ID SNYK-AMZN201803-PHP56MSSQL-1708743
  • published 27 Sep 2021
  • disclosed 3 Jan 2016

How to fix?

Upgrade Amazon-Linux:2018.03 php56-mssql to version 0:5.6.32-1.135.amzn1 or higher.
This issue was patched in ALAS-2017-924.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php56-mssql package and not the php56-mssql package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

The pcre_compile2 function in pcre_compile.c in PCRE 8.38 mishandles the /((?:F?+(?:^(?(R)a+&#34;){99}-))(?J)(?'R'(?'R'<((?'RR'(?'R'){97)?J)?J)(?'R'(?'R'){99|(:(?|(?'R')(\k'R')|((?'R')))H'R'R)(H'R))))))/ pattern and related patterns with named subgroups, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

CVSS Scores

version 3.1
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NVD

9.8 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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Red Hat

6.3 medium