Sun statement on the OpenSSH Remote Challenge Vulnerability

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An official Security bulletin with be released very soon but the 
following is an interim statement since we have received a number of 
enquiries.

The version of OpenSSH that is in Solaris 9 is not beleived to be 
vulnerable if the default configuration is used.  If sshd_config(4)
has been updated so that BOTH of the following entries are present
then it is vulnerable.

	PAMAuthenticationViaKBDInt yes
	KbdInteractiveAuthentication yes

Note that in the default sshd_config(4) PAMAuthenticationViaKBDInt is
listed but KbdInteractiveAuthentication is not (the compiled in default 
for KbdInteractiveAuthentication is no).

Sun is in the process of producing a patch for Solaris 9.  Older Solaris 
releases are not vulernable since they do not include OpenSSH as part of 
the Solaris distribution - hosts that added OpenSSH as part of their own 
site configurations should check the official OpenSSH advisory for details.

The patch that Sun produces to fix this issue will not contain the new 
OpenSSH Privsep support as it is not yet stable enough on Solaris due to 
interactions with PAM and BSM auditing, this may appear in a future 
release - Sun is working with the OpenSSH devlopers on the PAM problems 
and once a working OpenSSH with PAM and BSM is available we will 
re-evaluate our position on Privsep.

-- 
Darren J Moffat


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