NULL pointer dereference in PHP - CVE-2016-9934

Vulnerability identifier: #VU12902

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2016-9934

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in ext/wddx/wddx.c due to NULL pointer dereference. A remote attacker can submit crafted serialized data in a wddxPacket XML document, as demonstrated by a PDORow string, and cause the service to crash.

PHP
Debian Linux
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power
Slackware Linux
php5 (Ubuntu package)

Update to version 5.6.28 or 7.0.13.

php5 (Ubuntu package) - addressed in versions 5.3.10-1ubuntu3.26, 5.5.9+dfsg-1ubuntu4.21

• http://www.php.net/ChangeLog-5.php
• http://www.php.net/ChangeLog-7.php

• Red Hat update for php
• Debian update for php5
• Slackware Linux update for php
• Ubuntu update for PHP