Heap-based Buffer Overflow Affecting rh-php56-php-pgsql package, versions <0:5.6.25-1.el7


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
3.59% (92nd percentile)

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  • Snyk IDSNYK-RHEL7-RHPHP56PHPPGSQL-4695496
  • published26 Jul 2021
  • disclosed24 Apr 2016

Introduced: 24 Apr 2016

CVE-2016-4538  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade RHEL:7 rh-php56-php-pgsql to version 0:5.6.25-1.el7 or higher.
This issue was patched in RHSA-2016:2750.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rh-php56-php-pgsql package and not the rh-php56-php-pgsql package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The bcpowmod function in ext/bcmath/bcmath.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 modifies certain data structures without considering whether they are copies of the zero, one, or two global variable, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted call.

CVSS Scores

version 3.1