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Mend.io Vulnerability Database

CVE-2016-4538

Date: May 21, 2016

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.

Language: C

Severity Score

9.8

Related Resources (19)

Url: http://www.securityfocus.com/bid/90173

Url: http://www.debian.org/security/2016/dsa-3602

Url: http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html

Url: http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html

Url: http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html

Url: https://access.redhat.com/security/cve/CVE-2016-4538

Url: http://rhn.redhat.com/errata/RHSA-2016-2750.html

Url: http://www.openwall.com/lists/oss-security/2016/05/05/21

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2016-4538

Url: https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=d650063a0457aec56364e4005a636dc6c401f9cd

Url: https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149

Url: https://bugs.php.net/bug.php?id=72093

Url: https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722

Url: https://security.gentoo.org/glsa/201611-22

Url: http://php.net/ChangeLog-5.php

Url: http://php.net/ChangeLog-7.php

Url: https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731

Url: https://nvd.nist.gov/vuln/detail/CVE-2016-4538

Url: https://www.mend.io/vulnerability-database/CVE-2016-4538

Severity Score

9.8

Weakness Type (CWE)

Improper Input Validation

CWE-20

CVSS v3.1

Base Score:	9.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	7.5
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

Mend.io Vulnerability Database

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CVE-2016-4538

Date: May 21, 2016

Language: C

Severity Score

Related Resources (19)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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