CVE-2006-7243

Name of the Vulnerable Software and Affected Versions PHP versions prior to 5.3.4

Description The issue allows context-dependent attackers to bypass intended access restrictions. This can be achieved by placing a safe file extension after the 0 character in a pathname. For example, using .php0.jpg at the end of the argument to the file exists function. The vulnerability exists due to insufficient input validation in the file exists function of the PHP interpreter, which can be exploited by a remote attacker to bypass existing security restrictions.

Recommendations For PHP versions prior to 5.3.4, update to version 5.3.4 or later to resolve the issue. As a temporary workaround, consider validating and sanitizing all input to the file exists function to prevent the use of the 0 character in pathnames.