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Vulnerability Details : CVE-2016-4537

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.
Publish Date : 2016-05-21 Last Update Date : 2017-06-30
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- CVSS Scores & Vulnerability Types

CVSS Score
7.5
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 20

- Products Affected By CVE-2016-4537

# Product Type Vendor Product Version Update Edition Language
1 OS Fedoraproject Fedora 24 Version Details Vulnerabilities
2 OS Novell Leap 42.1 Version Details Vulnerabilities
3 Application PHP PHP 5.5.34 Version Details Vulnerabilities
4 Application PHP PHP 5.6.0 Version Details Vulnerabilities
5 Application PHP PHP 5.6.1 Version Details Vulnerabilities
6 Application PHP PHP 5.6.2 Version Details Vulnerabilities
7 Application PHP PHP 5.6.3 Version Details Vulnerabilities
8 Application PHP PHP 5.6.4 Version Details Vulnerabilities
9 Application PHP PHP 5.6.5 Version Details Vulnerabilities
10 Application PHP PHP 5.6.6 Version Details Vulnerabilities
11 Application PHP PHP 5.6.7 Version Details Vulnerabilities
12 Application PHP PHP 5.6.8 Version Details Vulnerabilities
13 Application PHP PHP 5.6.9 Version Details Vulnerabilities
14 Application PHP PHP 5.6.10 Version Details Vulnerabilities
15 Application PHP PHP 5.6.11 Version Details Vulnerabilities
16 Application PHP PHP 5.6.12 Version Details Vulnerabilities
17 Application PHP PHP 5.6.13 Version Details Vulnerabilities
18 Application PHP PHP 5.6.14 Version Details Vulnerabilities
19 Application PHP PHP 5.6.15 Version Details Vulnerabilities
20 Application PHP PHP 5.6.16 Version Details Vulnerabilities
21 Application PHP PHP 5.6.17 Version Details Vulnerabilities
22 Application PHP PHP 5.6.18 Version Details Vulnerabilities
23 Application PHP PHP 5.6.19 Version Details Vulnerabilities
24 Application PHP PHP 5.6.20 Version Details Vulnerabilities
25 Application PHP PHP 7.0.0 Version Details Vulnerabilities
26 Application PHP PHP 7.0.1 Version Details Vulnerabilities
27 Application PHP PHP 7.0.2 Version Details Vulnerabilities
28 Application PHP PHP 7.0.3 Version Details Vulnerabilities
29 Application PHP PHP 7.0.4 Version Details Vulnerabilities
30 Application PHP PHP 7.0.5 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Fedoraproject Fedora 1
Novell Leap 1
PHP PHP 28

- References For CVE-2016-4537

http://php.net/ChangeLog-5.php CONFIRM
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149 CONFIRM
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722 CONFIRM
https://security.gentoo.org/glsa/201611-22
GENTOO GLSA-201611-22
http://www.debian.org/security/2016/dsa-3602
DEBIAN DSA-3602
http://www.openwall.com/lists/oss-security/2016/05/05/21
MLIST [oss-security] 20160505 CVE Request: PHP: several issues fixed with 7.0.6, 5.6.21 and 5.5.35
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731 CONFIRM
http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.html
FEDORA FEDORA-2016-f4e73663f4
https://git.php.net/?p=php-src.git;a=commit;h=d650063a0457aec56364e4005a636dc6c401f9cd CONFIRM
https://bugs.php.net/bug.php?id=72093 CONFIRM
http://www.securityfocus.com/bid/90173
BID 90173 PHP 'bcmath.c' Multiple Local Heap Overflow Vulnerabilities Release Date:2016-12-05
http://php.net/ChangeLog-7.php CONFIRM
http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.html
SUSE openSUSE-SU-2016:1524
http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.html
SUSE openSUSE-SU-2016:1357

- Metasploit Modules Related To CVE-2016-4537

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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