CVE-2015-6837 Affecting php56-mssql package, versions <0:5.6.14-1.119.amzn1


Severity

Recommended
medium

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    2.78% (91st percentile)

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  • Snyk ID SNYK-AMZN201803-PHP56MSSQL-1690888
  • published 27 Sep 2021
  • disclosed 16 May 2016

How to fix?

Upgrade Amazon-Linux:2018.03 php56-mssql to version 0:5.6.14-1.119.amzn1 or higher.
This issue was patched in ALAS-2015-601.

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 xsl_ext_function_php function in ext/xsl/xsltprocessor.c in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13, when libxml2 before 2.9.2 is used, does not consider the possibility of a NULL valuePop return value before proceeding with a free operation during initial error checking, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted XML document, a different vulnerability than CVE-2015-6838.

CVSS Scores

version 3.1
Expand this section

Red Hat

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