Race condition in PHP - CVE-2011-0753
Published: February 3, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45388
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2011-0753
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
Race condition in the PCNTL extension in PHP before 5.3.4, when a user-defined signal handler exists, might allow context-dependent attackers to cause a denial of service (memory corruption) via a large number of concurrent signals.
Affected software
PHP
Gentoo Linux
dev-lang/php
Gentoo Linux
dev-lang/php
How to mitigate CVE-2011-0753
Install update from vendor's website.
dev-lang/php - update to 5.3.8