VULHUB ™

Software versions 6.1(1), 6.1(1a) and 6.1(1b) for Catalyst 4000, 5000, and 6000 devices that support SSH and 3 DES encryption contain a vulnerability that may allow an attacker to cause a denial of service. If a connection is made to the SSH service on a vulnerable Catalyst device and the protocol mismatch error occurs, the device will be reset.

Software versions 6.1(1), 6.1(1a) and 6.1(1b) for Catalyst 4000, 5000, and 6000 devices that support SSH and 3 DES encryption contain a vulnerability that may allow an attacker to cause a denial of service. If a connection is made to the SSH service on a vulnerable Catalyst device and the protocol mismatch error occurs, the device will be reset.