Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Php | Php | 5.6.0 |
| Xmlsoft | Libxml2 | <= 2.9.1 |
References
- http://php.net/ChangeLog-5.php
- http://www.debian.org/security/2015/dsa-3358
- http://www.securityfocus.com/bid/76738
- http://www.securitytracker.com/id/1033548
- https://bugs.php.net/bug.php?id=69782
- https://security.gentoo.org/glsa/201606-10
- http://php.net/ChangeLog-5.php
- http://www.debian.org/security/2015/dsa-3358
- http://www.securityfocus.com/bid/76738
- http://www.securitytracker.com/id/1033548
- https://bugs.php.net/bug.php?id=69782
- https://security.gentoo.org/glsa/201606-10
FAQ
What is CVE-2015-6837?
CVE-2015-6837 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2015-6837?
CVE-2015-6837 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-6837?
Check the references section above for vendor advisories and patch information. Affected products include: Php Php, Xmlsoft Libxml2.