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CVE-2016-4538 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  9.8 CRITICAL
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html CVE, Debian GNU/Linux
http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html CVE, Debian GNU/Linux
http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html CVE, Debian GNU/Linux
http://php.net/ChangeLog-5.php CVE, Debian GNU/Linux Patch 
http://php.net/ChangeLog-7.php CVE, Debian GNU/Linux Patch 
http://rhn.redhat.com/errata/RHSA-2016-2750.html CVE, Debian GNU/Linux
http://www.debian.org/security/2016/dsa-3602 CVE, Debian GNU/Linux
http://www.openwall.com/lists/oss-security/2016/05/05/21 CVE, Debian GNU/Linux
http://www.securityfocus.com/bid/90173 CVE, Debian GNU/Linux
https://bugs.php.net/bug.php?id=72093 CVE, Debian GNU/Linux Exploit 
https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=d650063a0457aec56364e4005a636dc6c401f9cd CVE, Debian GNU/Linux
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731 CVE, Debian GNU/Linux
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149 CVE, Debian GNU/Linux
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722 CVE, Debian GNU/Linux
https://security.gentoo.org/glsa/201611-22 CVE, Debian GNU/Linux

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
   Show Matching CPE(s)
Up to (including)
5.5.33
 cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:5.6.20:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:a:php:php:7.0.5:*:*:*:*:*:*:*
   Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
   Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
   Show Matching CPE(s)

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

17 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-4538
NVD Published Date:
05/21/2016
NVD Last Modified:
04/12/2025
Source:
Debian GNU/Linux