Description
QueryString.php in Simple Machines Forum (SMF) 1.0.7 and earlier, and 1.1rc2 and earlier, allows remote attackers to more easily spoof the IP address and evade banning via a modified X-Forwarded-For HTTP header, which is preferred instead of other more reliable sources for the IP address. NOTE: the original researcher claims that the vendor has disputed this issue
References
- 2256 third-party-advisory
- smf-xforward-ip-spoofing(27082) vdb-entry
- 20060601 SMF 1.0.7 and lower plus 1.1rc2 and lower - IP spoofing vulnerability/IP ban evasion vulnerability mailing-list