Denial of Service Vulnerabilities in SSH 2 on Cisco IOS 12.0-12.3

CVE-2005-1020 · HIGH Severity

AV:N/AC:M/AU:N/C:N/I:N/A:C

Secure Shell (SSH) 2 in Cisco IOS 12.0 through 12.3 allows remote attackers to cause a denial of service (device reload) (1) via a username that contains a domain name when using a TACACS+ server to authenticate, (2) when a new SSH session is in the login phase and a currently logged in user issues a send command, or (3) when IOS is logging messages and an SSH session is terminated while the server is sending data.

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