Improper Input Validation Affecting php5 package, versions <5.6.22+dfsg-0+deb8u1


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
3.59% (92nd percentile)

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  • Snyk IDSNYK-DEBIAN8-PHP5-395066
  • published22 May 2016
  • disclosed22 May 2016

Introduced: 22 May 2016

CVE-2016-4538  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Debian:8 php5 to version 5.6.22+dfsg-0+deb8u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php5 package and not the php5 package as distributed by Debian. See How to fix? for Debian:8 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