full-disclosure - lsh patch (was Re: new ssh exploit?)

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <200309191654.16635.carl@learningshophull.co.uk>
From: carl at learningshophull.co.uk (Carl Livitt)
Subject: lsh patch (was Re: new ssh exploit?)

> I'm *not* going to bet that it isn't exploitable. I'll try to get new
> releases out within a few days, until then, I recommend that you apply
> the above patch to lshd and recompile, or disable lshd service.

I would recommend that too. Attached is a revised version of the exploit I 
posted earlier with a couple more targets.... it also works against lsh 
running 'daemonic', ie. started as a daemon and not just against lshd running 
in the foreground.

The only caveat is that the exploit must be the first thing to connect to lshd  
otherwise the exploit becomes a DoS.

More advanced exploits that work _every_ time should be expected.

Carl.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: lsh_exploit.c
Type: text/x-csrc
Size: 8179 bytes
Desc: not available
Url : http://lists.grok.org.uk/pipermail/full-disclosure/attachments/20030919/679b95a8/lsh_exploit.bin