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

Date: Mon, 8 Feb 2010 22:33:28 +0100
From: "Stefan Kanthak" <stefan.kanthak@...go.de>
To: <full-disclosure@...ts.grok.org.uk>, <bugtraq@...urityfocus.com>
Cc: "Michael Wojcik" <Michael.Wojcik@...rofocus.com>
Subject: Re: Samba Remote Zero-Day Exploit

Michael Wojcik wrote:

>> From: Stefan Kanthak [mailto:stefan.kanthak@...go.de]
>> Sent: Saturday, 06 February, 2010 08:21
>> 
>> Dan Kaminsky wrote:
>> 
>> [...]
>> 
>> > (On a side note, you're not going to see this sort of symlink stuff
>> > on Windows,
>> 
>> What exactly do you mean?
>> Traversing symlinks on the server/share, or creation of "wide"
>symlinks
>> by the client on the server/share?
>> 
>> Since Windows 2000 NTFS supports "junctions", which pretty much
>> resemble Unix symlinks, but only for directories.
>> See <http://support.microsoft.com/kb/205524/en-us>
>
> And at least since Vista, it also supports symlinks, which are designed

s/at least//

[ well-known facts snipped ]

> The Windows SMB server apparently won't cross reparse points, though, so
> there's no equivalent vulnerability.

NO, Windows SMB server crosses reparse points!

But as Dan Kaminsky pointed out, you need to have administrative rights
to remotely create a junction on an SMB share, so the non-admin user
cant get himself access to files outside a share he's allowed to access.

Stefan