NULL pointer dereference in PHP - CVE-2016-7131
Published: September 12, 2016 / Updated: August 9, 2020
Vulnerability identifier: #VU40097
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2016-7131
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a malformed wddxPacket XML document that is mishandled in a wddx_deserialize call, as demonstrated by a tag that lacks a < (less than) character.
Affected software
PHP
SUSE Linux
Slackware Linux
SUSE Linux
Slackware Linux
How to mitigate CVE-2016-7131
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
External References
- http://openwall.com/lists/oss-security/2016/09/02/9
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://www.php.net/ChangeLog-5.php
- http://www.php.net/ChangeLog-7.php
- http://www.securityfocus.com/bid/92768
- http://www.securitytracker.com/id/1036680
- https://bugs.php.net/bug.php?id=72790
- https://github.com/php/php-src/commit/a14fdb9746262549bbbb96abb87338bacd147e1b?w=1
- https://security.gentoo.org/glsa/201611-22
- https://www.tenable.com/security/tns-2016-19