Vulnerability ID: HTB22343 Reference: http://www.htbridge.ch/advisory/ip_address_spoofing_in_e107.html Product: e107 Website System Vendor: e107 Vulnerable Version: 0.7.19 and Probably Prior Versions Vendor Notification: 05 April 2010 Vulnerability Type: Application Logic Error Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response Risk level: Low Credit: High-Tech Bridge SA (http://www.htbridge.ch/) Vulnerability Details: An attacker can spoof his IP address in the system logs. Attacker can alter the X-Forwarded-For field and system will log this value as real. IP-bases filtering systems can be bypassed, fake or local IPs may be logged instead of the real. Vulnerability is critical for IP-based authentications. Attacker can use browser to exploit this vulnerability. The following PoC is available: X-Forwarded-For: 1.2.3.4
