A remote attacker who gains administrative access can manipulate the gbadmin.cgi script using the ?action variable to change the entry file to an arbitrary file path on the system. This would allow the attacker to view the arbitrary file content with the privileges the web server runs under.
Unknown or Incomplete
Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by disabling all access to the guestbook scripts until a patch or upgrade is made available.
The database information may change without any notice. Use of the information constitutes acceptance for use in an AS IS condition, and there are NO
warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the copyright
holder or distributor (OSVDB or OSF) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.