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Vulnerability Details : CVE-2015-6837

The xsl_ext_function_php function in ext/xsl/xsltprocessor.c in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13, when libxml2 before 2.9.2 is used, does not consider the possibility of a NULL valuePop return value before proceeding with a free operation during initial error checking, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted XML document, a different vulnerability than CVE-2015-6838.
Publish Date : 2016-05-16 Last Update Date : 2017-11-03
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
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 CWE id is not defined for this vulnerability

- Products Affected By CVE-2015-6837

# Product Type Vendor Product Version Update Edition Language
1 Application PHP PHP 5.4.44 Version Details Vulnerabilities
2 Application PHP PHP 5.5.0 Alpha2 Version Details Vulnerabilities
3 Application PHP PHP 5.5.0 Beta2 Version Details Vulnerabilities
4 Application PHP PHP 5.5.0 Alpha3 Version Details Vulnerabilities
5 Application PHP PHP 5.5.0 Beta3 Version Details Vulnerabilities
6 Application PHP PHP 5.5.0 Alpha4 Version Details Vulnerabilities
7 Application PHP PHP 5.5.0 Beta4 Version Details Vulnerabilities
8 Application PHP PHP 5.5.0 Alpha5 Version Details Vulnerabilities
9 Application PHP PHP 5.5.0 Version Details Vulnerabilities
10 Application PHP PHP 5.5.0 RC1 Version Details Vulnerabilities
11 Application PHP PHP 5.5.0 Alpha6 Version Details Vulnerabilities
12 Application PHP PHP 5.5.0 Alpha1 Version Details Vulnerabilities
13 Application PHP PHP 5.5.0 RC2 Version Details Vulnerabilities
14 Application PHP PHP 5.5.0 Beta1 Version Details Vulnerabilities
15 Application PHP PHP 5.5.1 Version Details Vulnerabilities
16 Application PHP PHP 5.5.2 Version Details Vulnerabilities
17 Application PHP PHP 5.5.3 Version Details Vulnerabilities
18 Application PHP PHP 5.5.4 Version Details Vulnerabilities
19 Application PHP PHP 5.5.5 Version Details Vulnerabilities
20 Application PHP PHP 5.5.6 Version Details Vulnerabilities
21 Application PHP PHP 5.5.7 Version Details Vulnerabilities
22 Application PHP PHP 5.5.8 Version Details Vulnerabilities
23 Application PHP PHP 5.5.9 Version Details Vulnerabilities
24 Application PHP PHP 5.5.10 Version Details Vulnerabilities
25 Application PHP PHP 5.5.11 Version Details Vulnerabilities
26 Application PHP PHP 5.5.12 Version Details Vulnerabilities
27 Application PHP PHP 5.5.13 Version Details Vulnerabilities
28 Application PHP PHP 5.5.14 Version Details Vulnerabilities
29 Application PHP PHP 5.5.15 Version Details Vulnerabilities
30 Application PHP PHP 5.5.16 Version Details Vulnerabilities
31 Application PHP PHP 5.5.17 Version Details Vulnerabilities
32 Application PHP PHP 5.5.18 Version Details Vulnerabilities
33 Application PHP PHP 5.5.19 Version Details Vulnerabilities
34 Application PHP PHP 5.5.20 Version Details Vulnerabilities
35 Application PHP PHP 5.5.21 Version Details Vulnerabilities
36 Application PHP PHP 5.5.22 Version Details Vulnerabilities
37 Application PHP PHP 5.5.23 Version Details Vulnerabilities
38 Application PHP PHP 5.5.24 Version Details Vulnerabilities
39 Application PHP PHP 5.5.25 Version Details Vulnerabilities
40 Application PHP PHP 5.5.26 Version Details Vulnerabilities
41 Application PHP PHP 5.5.27 Version Details Vulnerabilities
42 Application PHP PHP 5.5.28 Version Details Vulnerabilities
43 Application PHP PHP 5.6.0 Alpha5 Version Details Vulnerabilities
44 Application PHP PHP 5.6.0 Beta1 Version Details Vulnerabilities
45 Application PHP PHP 5.6.0 Alpha1 Version Details Vulnerabilities
46 Application PHP PHP 5.6.0 Beta2 Version Details Vulnerabilities
47 Application PHP PHP 5.6.0 Alpha2 Version Details Vulnerabilities
48 Application PHP PHP 5.6.0 Beta3 Version Details Vulnerabilities
49 Application PHP PHP 5.6.0 Alpha3 Version Details Vulnerabilities
50 Application PHP PHP 5.6.0 Beta4 Version Details Vulnerabilities
51 Application PHP PHP 5.6.0 Alpha4 Version Details Vulnerabilities
52 Application PHP PHP 5.6.1 Version Details Vulnerabilities
53 Application PHP PHP 5.6.2 Version Details Vulnerabilities
54 Application PHP PHP 5.6.3 Version Details Vulnerabilities
55 Application PHP PHP 5.6.4 Version Details Vulnerabilities
56 Application PHP PHP 5.6.5 Version Details Vulnerabilities
57 Application PHP PHP 5.6.6 Version Details Vulnerabilities
58 Application PHP PHP 5.6.7 Version Details Vulnerabilities
59 Application PHP PHP 5.6.8 Version Details Vulnerabilities
60 Application PHP PHP 5.6.9 Version Details Vulnerabilities
61 Application PHP PHP 5.6.10 Version Details Vulnerabilities
62 Application PHP PHP 5.6.11 Version Details Vulnerabilities
63 Application PHP PHP 5.6.12 Version Details Vulnerabilities
64 Application Xmlsoft Libxml2 2.9.1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
PHP PHP 63
Xmlsoft Libxml2 1

- References For CVE-2015-6837

http://php.net/ChangeLog-5.php CONFIRM
http://www.debian.org/security/2015/dsa-3358
DEBIAN DSA-3358
https://bugs.php.net/bug.php?id=69782 CONFIRM
http://www.securitytracker.com/id/1033548
SECTRACK 1033548
http://www.securityfocus.com/bid/76738
BID 76738 PHP 'valuePop()' Function Null Pointer Deference Denial of Service Vulnerability Release Date:2016-02-11
https://security.gentoo.org/glsa/201606-10
GENTOO GLSA-201606-10

- Metasploit Modules Related To CVE-2015-6837

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