Deserialization of untrusted data in PHP - CVE-2017-11143
Published: December 19, 2017
Vulnerability identifier: #VU9695
CSH Severity: Low
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-2017-11143
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in parser.c function due to deserialization of untrusted data. A remote attacker can inject specially crafted XML file and crash the PHP interpreter, related to an invalid free for an empty boolean element in ext/wddx/wddx.c.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists in parser.c function due to deserialization of untrusted data. A remote attacker can inject specially crafted XML file and crash the PHP interpreter, related to an invalid free for an empty boolean element in ext/wddx/wddx.c.
Successful exploitation of the vulnerability results in denial of service.
Affected software
PHP
php5 (Ubuntu package)
php (Debian package)
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power
php5 (Ubuntu package)
php (Debian package)
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power
How to mitigate CVE-2017-11143
Update to version 5.6.31.
php5 (Ubuntu package) - update to 5.3.10-1ubuntu3.28
php (Debian package) - update to 5.6.33+dfsg-0+deb8u1
php (Debian package) - update to 5.6.33+dfsg-0+deb8u1