bugtraq - Re: Samba Remote Zero-Day 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-next>] [day] [month] [year] [list]

Date: Sat, 6 Feb 2010 09:43:58 +1100
From: paul.szabo@...ney.edu.au
To: dan@...para.com
Cc: bugtraq@...urityfocus.com, full-disclosure@...ts.grok.org.uk,
	kcope2@...glemail.com
Subject: Re: Samba Remote Zero-Day Exploit

Dear Dan,

> The bug here is that out-of-path symlinks are remotely writable. ...

You mean "creatable".

> ... the fact that he can *generate* the symlink breaks ...

Nothing breaks if the admin sets "wide links = no" for that share: the
link is not followed.

> But Samba supports dropping a user into a path ...

I never noticed such support documented: references please?

> ... and it really does need to keep him there.

You cannot "break out" of shares with "wide links = no".

> ... Samba is supposed to match Windows semantics in general.

No please, do not dumb it down.

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