Improper input validation in PHP - CVE-2017-11142
Published: January 9, 2018 / Updated: January 11, 2018
Vulnerability identifier: #VU9960
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-2017-11142
CWE-ID: CWE-20
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 improper check for variable length in main/php_variables.c. A remote attacker can cause a CPU consumption denial of service attack by injecting long form variables.
The vulnerability exists due to improper check for variable length in main/php_variables.c. A remote attacker can cause a CPU consumption denial of service attack by injecting long form variables.
Affected software
PHP
php (Debian package)
php (Debian package)
How to mitigate CVE-2017-11142
Update to version 5.6.31, 7.0.17 or 7.1.3.
php (Debian package) - update to 5.6.33+dfsg-0+deb8u1
External References
- http://php.net/ChangeLog-5.php
- http://php.net/ChangeLog-7.php
- https://bugs.php.net/bug.php?id=73807
- https://github.com/php/php-src/commit/0f8cf3b8497dc45c010c44ed9e96518e11e19fc3
- https://github.com/php/php-src/commit/a15bffd105ac28fd0dd9b596632dbf035238fda3
- http://openwall.com/lists/oss-security/2017/07/10/6