Re: Samba Remote Zero-Day Exploit
Michael Wojcik wrote:
>> From: Stefan Kanthak [mailto:stefan.kanthak@nexgo.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
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