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Re: yet another OpenSSH timing leak?
From: Gianluca Varisco (giangy
techtemple.org)
Date: Mon Oct 09 2006 - 17:41:25 CDT
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Marco Ivaldi wrote:
> It needs expect, and target ssh hostkey must be already added. I'd be
> very interested in knowing the results of tests performed on other
> distros and configurations.
>
Hi Marco,
nice to meet you :-). I tried to do this test over my 10 Mbps lan and
this is the result:
giangy
thor:~/dev$ ./sshtime calipso users.txt
a
calipso real 9.55
root
calipso real 9.33 <- valid user with shell
wheel
calipso real 10.44
giangy
calipso real 9.49
cdrom
calipso real 9.68
burning
calipso real 9.47
mysql
calipso real 9.35
operator
calipso real 9.59 <- valid user with shell
test
calipso real 9.51 <- valid user with shell
Another test:
a
calipso real 9.37
root
calipso real 9.90 <- valid user with shell
wheel
calipso real 10.66
giangy
calipso real 9.41
cdrom
calipso real 9.30
burning
calipso real 10.30
mysql
calipso real 9.47
operator
calipso real 10.21 <- valid user with shell
test
calipso real 10.98 <- valid user with shell
daemon
calipso real 7.14
abcd
calipso real 7.20
"root", "operator" and "test" are valid users with a valid shell
enabled. I made this test on Slackware 11.0 (fresh installation) with
OpenSSH_4.4p1. I used the default sshd_config (see
http://slackware.osuosl.org/slackware-current/source/n/openssh/ for more
informations about the package). So, I don't received any timing leak in
this session.
I'll try as possible other distributions and configurations. However,
good work Marco :-).
Best Regards,
Gianluca Varisco
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