Full Disclosure mailing list archives
Re: new ssh exploit?
From: Bennett Todd <bet () rahul net>
Date: Wed, 17 Sep 2003 08:17:43 -0400
2003-09-16T21:16:34 Blue Boar:
Out of curiosity, what leads you to believe that lshd will be better in terms of future bugs vs. OpenSSH?
Good question. lsh seems to be using coding techniques designed to help prevent the sort of silent, quiet bugs that don't show up in normal use but allow attacks. I say seems because I've not yet audited the code. But it works with length-counted strings, memory management is very carefully thought out and clearly documented, and the code is very tightly structured.
You specifically mentioned OpenSSL libs and SSHv1 support as concerns with OpenSSH. And sure, it seems unlikely that they just got the very last bug.
Actually, it's not so much I'm opposed to sshv1 support, and more like willing to live without it. OpenSSL hasn't had the best security track record to date, although as best I recall none of OpenSSH's bugs of the sort that produce remote root attacks were attributable to OpenSSL bugs.
You also talk about a number of libraries needed by lshd, and some other things that aren't quite fully implemented in it yet.
It's a young implementation yet, that's for sure, and it does lean on some libs that aren't ubiquitous, notably liboop.
Is it just a matter of having some diversity?
That's a big motivation, for sure. -Bennett
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Current thread:
- Re: new ssh exploit?, (continued)
- Re: new ssh exploit? Justin Kreger (Sep 15)
- Re: new ssh exploit? Ron DuFresne (Sep 16)
- Re: new ssh exploit? Jonathan A. Zdziarski (Sep 16)
- Re: new ssh exploit? Valdis . Kletnieks (Sep 17)
- Re: new ssh exploit? Valdis . Kletnieks (Sep 17)
- Re: new ssh exploit? Bennett Todd (Sep 16)
- Re: new ssh exploit? Ron DuFresne (Sep 16)
- Re: new ssh exploit? Bennett Todd (Sep 16)
- Re: new ssh exploit? Blue Boar (Sep 16)
- Re: new ssh exploit? Bennett Todd (Sep 17)
- Re: new ssh exploit? Bennett Todd (Sep 18)
- Re: new ssh exploit? Damian Gerow (Sep 18)
- Re: new ssh exploit? Bennett Todd (Sep 18)
- Re: new ssh exploit? Damian Gerow (Sep 18)