PHP 5 before 5.2.7 does not enforce the error_log safe_mode restrictions when safe_mode is enabled through a php_admin_flag setting in httpd.conf, which allows context-dependent attackers to write to arbitrary files by placing a "php_value error_log" entry in a .htaccess file.
http://archives.neohapsis.com/archives/bugtraq/2008-11/0152.html
http://marc.info/?l=bugtraq&m=124654546101607&w=2
http://marc.info/?l=bugtraq&m=125631037611762&w=2
http://secunia.com/advisories/35650
http://securityreason.com/achievement_securityalert/57
https://exchange.xforce.ibmcloud.com/vulnerabilities/47314
https://www.exploit-db.com/exploits/7171
http://wiki.rpath.com/Advisories:rPSA-2009-0035
http://www.mandriva.com/security/advisories?name=MDVSA-2009:045
Published: 2008-12-17
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High