Title: Level One WBR-3460A 4-Port ADSL 2/2+ Wireless Modem Router Unauthorized Access Vulnerability
Severity: CRITICAL
Description:
Level One WBR-3460A is a 4-Port ADSL 2/2+ Wireless Modem Router that includes QoS and VPN support. By default, the router listens on TCP port 23 for its Telnet service and TCP port 80 for HTTP, but these services are accessible only via the local network.
The router is prone to a vulnerability that results in unauthorized superuser access.
The issue occurs because the device lacks access control and authentication mechanisms for its Telnet service. Connections via Telnet have superuser access to the router's filesystem.
Successful exploits will completely compromise affected routers. This could aid in attacks against other computers on the network.
WBR-3460A firmware 1.00.11 and 1.00.12 are vulnerable; other versions may also be affected. Reports indicate that 1.00.06 (which comes preinstalled on the device) is not affected.
Affected Products:
- Level One WBR-3460A 1.00.11
- Level One WBR-3460A 1.00.12
References:
- Level One: WBR-3460A Product Page
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