[Samba] CPU 100% smbd 4.9.5 debian buster

Andrew Bartlett abartlet at samba.org
Mon Feb 15 20:12:14 UTC 2021


On Mon, 2021-02-15 at 20:00 +0000, Rowland penny via samba wrote:
> On 15/02/2021 19:56, Andrew Bartlett wrote:
> > On Mon, 2021-02-15 at 16:37 +0000, Rowland penny via samba wrote:
> > > On 15/02/2021 15:48, Francesc Guasch wrote:
> > > 
> > > > On Mon, Feb 15, 2021 at 02:06:52PM +0000, Rowland penny via
> > > > samba
> > > > wrote:
> > > > Hi Rowland. Thanks for anwering me.
> > > > > On 15/02/2021 12:39, Francesc Guasch via samba wrote:
> > > > > > Hi. I have a samba server that suddenly gets smbd
> > > > > > processes at 100% and becomes unusable.
> > > > > > This is samba release 2:4.9.5+dfsg-5+deb10u1
> > > > > > [IPC$]
> > > > > >         path = /tmp
> > > > > >         hosts deny = 0.0.0.0/0
> > > > > Why have you created a hidden share called 'IPC' ?
> > > > I don't know it has been here for ages.
> > > 
> > > 
> > > I would remove it, Samba creates it by default without it being
> > > in
> > > smb.conf.
> > This looks like our published mitigation for a very old Samba
> > security
> > issue.
> 
> How old and published where ?
> 
> I do not recall seeing this.

Very long before your time with us.

https://www.samba.org/samba/history/samba-2.2.8.html

Andrew Bartlett

-- 
Andrew Bartlett (he/him)       https://samba.org/~abartlet/
Samba Team Member (since 2001) https://samba.org
Samba Team Lead, Catalyst IT   https://catalyst.net.nz/services/samba

Samba Development and Support, Catalyst IT - Expert Open Source
Solutions




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