Use-after-free in PHP - CVE-2016-9137
Published: February 14, 2017 / Updated: November 27, 2018
Vulnerability identifier: #VU16136
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-2016-9137
CWE-ID: CWE-416
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 vulnerability exists due to use-after-free error in the CURLFile implementation in ext/curl/curl_file.c in PHP before 5.6.27 and 7.x before 7.0.12. A remote attacker can cause a denial of service via specially crafted serialized data that is mishandled during __wakeup processing.
Affected software
PHP
php5 (Ubuntu package)
php5 (Ubuntu package)
How to mitigate CVE-2016-9137
The vendor has issued the following versions to address this vulnerability: 5.6.27, 7.0.12.
PHP - addressed in versions 5.6.27, 7.0.12
php5 (Ubuntu package) - addressed in versions 5.3.10-1ubuntu3.26, 5.5.9+dfsg-1ubuntu4.21
php5 (Ubuntu package) - addressed in versions 5.3.10-1ubuntu3.26, 5.5.9+dfsg-1ubuntu4.21