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Message from discussion DEFCON 16 and Hacking OpenVMS
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samp...@gmail.com  
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 More options Aug 12 2008, 11:27 am
Newsgroups: comp.os.vms
From: samp...@gmail.com
Date: Tue, 12 Aug 2008 08:27:47 -0700 (PDT)
Local: Tues, Aug 12 2008 11:27 am
Subject: Re: DEFCON 16 and Hacking OpenVMS
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> >1. A format string vulnerability in the FINGER client (VAX only). The
> >example shellcode is stored on a remote system's .plan file and forces
> >the victim FINGER client to modify SYSUAF.

> Is this with DEC TCPIP services or is it something to do with the
> Multinet finger vulnerability ?

It appears to be something separate, since it seems to have to do with
a format string
vulnerability. Basically someone puts a bunch of % strings and
shellcode in their .plan
on a remote host, fingers that user from the target host, and the
FINGER client executes
the shellcode due to the format string vulnerability in the client.

> >2. A CLI buffer overflow on Alphas. Basically any input over 511
> >characters causes an overflow, it seems to be possible to have a
> >privileged process execute arbitrary code.

> Can you explain this one in a bit more detail ?
> Is this an attack against DCL itself, images installed with privileges
> or something else ?

I think this might be a DCL issue, it seems to work across a number of
different images. Not had a chance to play with this as my own VMS
box is down at the moment.

Sampsa


 
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