CVE-2016-4537

CVSS V2 High 7.5 CVSS V3 Critical 9.8

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 accepts a negative integer for the scale argument, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted call.

Overview

CVE ID
CVE-2016-4537

Assigner
security@debian.org

Vulnerability Status
Modified

Published Version
2016-05-22T01:59:21

Last Modified Date
2018-10-30T16:27:32

Weakness Enumerations

CWE	URL
CWE-20	http://cwe.mitre.org/data/definitions/20.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
cpe:2.3:a:php:php::::::::	1	OR	5.5.34
cpe:2.3:a:php:php:5.6.0:::::::*	1	OR
cpe:2.3:a:php:php:5.6.1:::::::*	1	OR
cpe:2.3:a:php:php:5.6.2:::::::*	1	OR
cpe:2.3:a:php:php:5.6.3:::::::*	1	OR
cpe:2.3:a:php:php:5.6.4:::::::*	1	OR
cpe:2.3:a:php:php:5.6.5:::::::*	1	OR
cpe:2.3:a:php:php:5.6.6:::::::*	1	OR
cpe:2.3:a:php:php:5.6.7:::::::*	1	OR
cpe:2.3:a:php:php:5.6.8:::::::*	1	OR
cpe:2.3:a:php:php:5.6.9:::::::*	1	OR
cpe:2.3:a:php:php:5.6.10:::::::*	1	OR
cpe:2.3:a:php:php:5.6.11:::::::*	1	OR
cpe:2.3:a:php:php:5.6.12:::::::*	1	OR
cpe:2.3:a:php:php:5.6.13:::::::*	1	OR
cpe:2.3:a:php:php:5.6.14:::::::*	1	OR
cpe:2.3:a:php:php:5.6.15:::::::*	1	OR
cpe:2.3:a:php:php:5.6.16:::::::*	1	OR
cpe:2.3:a:php:php:5.6.17:::::::*	1	OR
cpe:2.3:a:php:php:5.6.18:::::::*	1	OR
cpe:2.3:a:php:php:5.6.19:::::::*	1	OR
cpe:2.3:a:php:php:5.6.20:::::::*	1	OR
cpe:2.3:a:php:php:7.0.0:::::::*	1	OR
cpe:2.3:a:php:php:7.0.1:::::::*	1	OR
cpe:2.3:a:php:php:7.0.2:::::::*	1	OR
cpe:2.3:a:php:php:7.0.3:::::::*	1	OR
cpe:2.3:a:php:php:7.0.4:::::::*	1	OR
cpe:2.3:a:php:php:7.0.5:::::::*	1	OR
cpe:2.3:o:opensuse:leap:42.1:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:24:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
7.5

Severity
HIGH

Exploitability Score
10

Impact Score
6.4

CVSS Version 3

Version
3.0

Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
9.8

Base Severity
CRITICAL

Exploitability Score
3.9

Impact Score
5.9

References

Reference URL	Reference Tags
http://php.net/ChangeLog-7.php	Patch
http://php.net/ChangeLog-5.php	Patch
http://www.openwall.com/lists/oss-security/2016/05/05/21
https://bugs.php.net/bug.php?id=72093	Exploit
https://git.php.net/?p=php-src.git;a=commit;h=d650063a0457aec56364e4005a636dc6c401f9cd
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html
http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149
http://www.debian.org/security/2016/dsa-3602
http://www.securityfocus.com/bid/90173
http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722
https://security.gentoo.org/glsa/201611-22
http://rhn.redhat.com/errata/RHSA-2016-2750.html

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2016-4537
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4537

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 17:57:16				Added to TrackCVE
2022-12-02 09:38:30	2016-05-22T01:59Z	2016-05-22T01:59:21	CVE Published Date	updated
2022-12-02 09:38:30		2018-10-30T16:27:32	CVE Modified Date	updated
2022-12-02 09:38:30		Modified	Vulnerability Status	updated