bugtraq - Re: Samba Remote Zero-Day Exploit

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Message-Id: <201002062148.o16Lm7Hk025374@bari.maths.usyd.edu.au>
Date: Sun, 7 Feb 2010 08:48:07 +1100
From: paul.szabo@...ney.edu.au
To: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk
Subject: Re: Samba Remote Zero-Day Exploit

I find it puzzling how this discussion, including the official Samba
response

  http://www.samba.org/samba/news/symlink_attack.html

fails to consider whether the mentioned configuration (when admin sets
non-default "writeable = yes" but leaving default "wide links = yes")
allows write access to the whole filesystem (where the user has UNIX
rights). I also wonder about the interaction with the setting of "unix
extensions" (which I had set to non-default "no" to help Mac clients).

Cheers, Paul

Paul Szabo   psz@...hs.usyd.edu.au   http://www.maths.usyd.edu.au/u/psz/
School of Mathematics and Statistics   University of Sydney    Australia