#VU9716 Denial of service in PHP - CVE-2017-11144
Published: December 22, 2017
Vulnerability identifier: #VU9716
Vulnerability risk: Low
CVSSv4.0: 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/E:U/U:Clear
CVE-ID: CVE-2017-11144
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
PHP
PHP
Software vendor:
PHP Group
PHP Group
Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to the openssl extension PEM sealing code did not check the return value of the OpenSSL sealing function. A remote attacker can trigger a crash of the PHP interpreter, related to an interpretation conflict for a negative number in ext/openssl/openssl.c, and an OpenSSL documentation omission.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists due to the openssl extension PEM sealing code did not check the return value of the OpenSSL sealing function. A remote attacker can trigger a crash of the PHP interpreter, related to an interpretation conflict for a negative number in ext/openssl/openssl.c, and an OpenSSL documentation omission.
Successful exploitation of the vulnerability results in denial of service.
Remediation
Update to version 5.6.31, 7.0.21 or 7.1.7.