D-Link patches router back-door vulnerability

D-Link has released firmware patches for a number of its older routers sporting a critical authentication security bypass vulnerability discovered in October. The flaw was discovered and its exploitability proved with a PoC by Tactical Network Solutions’ security researcher Craig Heffner. D-Link confirmed the existence of the problem a few weeks later. “Various D-Link routers allow administrative web actions if the HTTP request contains a specific User-Agent string. This backdoor allows an attacker to bypass password authentication and access the router’s administrative web interface,” D-Link explained in a security advisory. <more>