source: http://www.securityfocus.com/bid/4722/info

XMB Forum 1.6 Magic Lantern allows remote users to conduct activities in the forum while bypassing normal logging functions. This is accomplished by submitting an arbitrary string as the "analized" variable to index.php. Log information is written only if this variable is empty, so submitting a string to it bypassing the logging.

In addition, log files (index_log.log and cplogfile.log) may be written with improper permissions allowing users to retrieve them with a browser.

/forumpath/index.php?analized=anything 