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CVE-2016-4538

nvd nist
Published: May 22, 2016Modified: May 6, 2026

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9.8
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

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.

Affected (30)

Php
1 product
Php
Fedoraproject
1 product
Fedora
Opensuse
1 product
Leap
Configuration A
28 vulnerable
Vulnerable SoftwareAffected Versions
Php
Php
Up to 5.5.33
Php
Version 5.6.0
Php
Version 5.6.10
Php
Version 5.6.11
Php
Version 5.6.12
Php
Version 5.6.13
Php
Version 5.6.14
Php
Version 5.6.15
Php
Version 5.6.16
Php
Version 5.6.17
Php
Version 5.6.18
Php
Version 5.6.19
Php
Version 5.6.1
Php
Version 5.6.20
Php
Version 5.6.2
Php
Version 5.6.3
Php
Version 5.6.4
Php
Version 5.6.5
Php
Version 5.6.6
Php
Version 5.6.7
Php
Version 5.6.8
Php
Version 5.6.9
Php
Version 7.0.0
Php
Version 7.0.1
Php
Version 7.0.2
Php
Version 7.0.3
Php
Version 7.0.4
Php
Version 7.0.5
Configuration B
1 vulnerable
Vulnerable SoftwareAffected Versions
Fedora
Version 24
Configuration C
1 vulnerable
Vulnerable SoftwareAffected Versions
Leap
Version 42.1

Related CWEs

CWE-20
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

References (30)

Source: security@debian.org
Source: security@debian.org
Source: security@debian.org
Source: security@debian.org
Patch
Source: security@debian.org
Patch
Source: security@debian.org
Source: security@debian.org
Source: security@debian.org
Source: security@debian.org
Source: security@debian.org
Exploit
Source: security@debian.org
Source: security@debian.org
Source: security@debian.org
Source: security@debian.org
Source: security@debian.org
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

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