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PHP Vulnerability: CVE-2016-4538

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PHP Vulnerability: CVE-2016-4538

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
05/21/2016
Created
07/25/2018
Added
06/03/2016
Modified
07/21/2021

Description

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.

Solution(s)

  • php-upgrade-5_5_35
  • php-upgrade-5_6_21
  • php-upgrade-7_0_6

References

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