Adelphia's Cable Modems Compromised

texus writes "The Adelphia PowerLink Cable Modem Internet Service Provider, that serves 5.5 million customers nation wide, was found to be vulnerable of a major security flaw that allows cable modem subscribers to spy on each others traffic, as well as the ability to modify other users internet packets in realtime. The severity of a potential attack could allow a malicious subscriber to gain access to the customers private activity on the net, as well as the capabilities to hijack connections, intercept SSL/SSH/VPN encrypted sessions, hijack and poison dns servers, and perform a Denial of Service on the entire subnet. The advisory on BugTraq officially states that it didn't seem like Unix machines that logged onto the network were affected, but reports from other Adelphia subscribers indicate that this was inaccurate and Unix users are vulnerable as well."