Re: System Hacked from MySQL Insecurities

[Kalpin Erlangga Silaen <kalpin () solonet co id>]

Dear Bernie,

I am allowing port 3306 accessed from the outside world but I remove 
account which have NULL password. Actually I don't let mysql root 
password as default, but he can guess it (weak password). In my mind now 
is how can he get root shell from MySQL ? I was read mysql manual and 
there is possible to create file from OUTPUT SELECT and put any 
shellcode at there, but still own by mysql not root (this means is you 
can't set as setuid to root).

Or... I missing something ?

bernie () e-mich com wrote:

> Yes it is definately possible and easy to exploit MySQL.  Are you allowing port
> 3306 to accept connections from the outside world?
>
> Also did you set a root password for root, as the deafult install does not?
>
> Are you runing a firewall, and if you are are you only allowing access to port
> 3306 from certain IP's or subnets.
>
> These are all questions that you should know the answer too or you sahould not
> be running a public database server.  If you cannot answer these questions and
> need some help let me know, I will try to help if I can.
>
> B. Johnson
>
>
> Quoting Kalpin Erlangga Silaen <kalpin () solonet co id>:
>
>  
>
> > Dear all,
> >
> > several days ago, someone hacked my test box using the latest FreeBSD.
> > He explained that he rooted my box because he knows my root mysql
> > password. Is it possible to hack system via MySQL ? or he just tricked
> > me and try hide his way ? I am using MySQL 4.0.18 for FreeBSD.
> > My details system:
> >
> > OS: FreeBSD 5.1
> > MySQL version: 4.0.18
> > Port : 3306
> >
> > I opened port 3306 from Internet, so people can use this if they have
> > access/username to MySQL.
> >
> > Thank you.
> >
> > --
> > ---
> > Kalpin Erlangga Silaen
> > mailto: kalpin () solonet co id
> > URL: http://www.warningnews.com
> > YM: kalpinus
> > MSN: kalpinus
> > IRC: mesra.dal.net nick Kalpin
> >
> >
> >    
>
>
>
>
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>
>
>
>  

--
---
Kalpin Erlangga Silaen
mailto: kalpin () solonet co id
URL: http://www.warningnews.com
YM: kalpinus
MSN: kalpinus
IRC: mesra.dal.net nick Kalpin