Use-after-free in PHP - CVE-2014-4670
Published: November 27, 2018
Vulnerability identifier: #VU16093
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-4670
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause DoS condition.
The vulnerability exists due to use-after-free error in ext/spl/spl_dllist.c in the SPL component in PHP through 5.5.14. A local attacker can trigger memory corruption via crafted iterator usage within applications in certain web-hosting environments and cause the service to crash.
Affected software
PHP
Gentoo Linux
Slackware Linux
php5 (Ubuntu package)
php (Alpine package)
dev-lang/php
Gentoo Linux
Slackware Linux
php5 (Ubuntu package)
php (Alpine package)
dev-lang/php
How to mitigate CVE-2014-4670
Install updates from vendor's website.
php5 (Ubuntu package) - addressed in versions 5.3.2-1ubuntu4.26, 5.3.10-1ubuntu3.13
php (Alpine package) - update to 5.5.15-r0
dev-lang/php - update to 5.5.16
php (Alpine package) - update to 5.5.15-r0
dev-lang/php - update to 5.5.16