[Samba] [Announce] Samba meta-data symlink vulnerability CVE-2021-20316

Ralph Boehme slow at samba.org
Mon Jan 10 17:43:02 UTC 2022

On 1/10/22 17:51, Jeremy Allison wrote:
> On Mon, Jan 10, 2022 at 04:31:02PM +0100, Ralph Boehme via samba wrote:
>> On 1/10/22 16:06, Sven Schwedas via samba wrote:
>>> Just for clarification: If client min protocol is set to SMB2 or 
>>> higher, *or* unix entensions are disabled, and NFS is not used, this 
>>> is not exploitable?
>> correct. Unless you allow access by ssh.
> If you allow access via ssh, you have local access to
> all readable files anyway :-).

well, yes, but remember there are some codepaths where we do things as 
root, so I wouldn't bet on it.


Ralph Boehme, Samba Team                 https://samba.org/
SerNet Samba Team Lead      https://sernet.de/en/team-samba
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