Input validation error in PHP - CVE-2009-2626
Published: October 30, 2018 / Updated: June 11, 2025
Vulnerability identifier: #VU110316
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2009-2626
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: PHP Group
Affected software:
PHP
PHP
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read memory contents or crash the application.
The zend_restore_ini_entry_cb function in zend_ini.c in PHP 5.3.0, 5.2.10, and earlier versions allows context-specific attackers to obtain sensitive information (memory contents) and cause a PHP crash by using the ini_set function to declare a variable, then using the ini_restore function to restore the variable.
How to mitigate CVE-2009-2626
Install update from vendor's website.
Sources
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=540605
- http://secunia.com/advisories/37482
- http://securityreason.com/achievement_securityalert/65
- http://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/Zend/zend_ini.c?r1=272370&r2=284156
- http://www.debian.org/security/2009/dsa-1940
- http://www.securityfocus.com/bid/36009