NULL Pointer Dereference Vulnerability in PHP's XSLT Processor
CVE-2015-6837

7.5HIGH

Key Information:

Vendor

PHP
Status
PHP
Libxml2
Vendor
CVE Published:
16 May 2016

What is CVE-2015-6837?

The xsl_ext_function_php function in PHP's XSLT processor is susceptible to a NULL pointer dereference due to improper error handling when a NULL value is received, which can occur in earlier versions of PHP. This issue arises when processing specially crafted XML documents. Attackers can exploit this vulnerability to induce application crashes, resulting in a denial of service. Users of affected PHP versions should upgrade to mitigate this risk.

References

http://www.securityfocus.com/bid/76738
vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1033548
vdb-entryx_refsource_SECTRACK
https://bugs.php.net/bug.php?id=69782
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.