[Samba] CPU 100% smbd 4.9.5 debian buster

[Rowland penny]

On 15/02/2021 20:12, Andrew Bartlett wrote:
> 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
>
Wow, a smb.conf that seemingly hasn't been updated for 18 years, words 
fail me 😮

Rowland