[Python-Dev] SSH problems getting into SourceForge's CVS?

[Guido van Rossum]

When I tried "cvs update" today, I got an error from ssh:

"""
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@       WARNING: POSSIBLE DNS SPOOFING DETECTED!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
The RSA1 host key for cvs.python.sourceforge.net has changed,
and the key for the according IP address 66.35.250.209
is unknown. This could either mean that
DNS SPOOFING is happening or the IP address for the host
and its host key have changed at the same time.
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA1 host key has just been changed.
The fingerprint for the RSA1 key sent by the remote host is
33:50:33:91:b4:ec:7a:b6:fa:39:99:b0:ff:65:63:a7.
Please contact your system administrator.
Add correct host key in /home/guido/.ssh/known_hosts to get rid of this message.
Offending key in /home/guido/.ssh/known_hosts:1
RSA1 host key for cvs.python.sourceforge.net has changed and you have requested strict checking.
Host key verification failed.
cvs [update aborted]: end of file from server (consult above messages if any)
"""

After deleting the key from my known_hosts file, all I get is requests
for a password, which I refuse to give (since it shouldn't be
necessary and I don't want to rule out a man-in-the-middle attack
yet).  I've tried both ssh -1 and ssh -2.

Has this happened to anybody else?  The SF.net Site Status Page shows
nothing relevant.

--Guido van Rossum (home page: http://www.python.org/~guido/)