Kerberos Telnet Protocol Downgrade Vulnerability

CVE-2001-1444 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

The Kerberos Telnet protocol, as implemented by KTH Kerberos IV and Kerberos V (Heimdal), does not encrypt authentication and encryption options sent from the server, which allows remote attackers to downgrade authentication and encryption mechanisms via a man-in-the-middle attack.

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