Re: [Amsn-devel] aMSN <= 0.96 remote DoS vulnerability

[Ferdinand Klinzer <Klinzer () gmx de>]

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But that sound funny levent_ but still you are 31337 hacker
pz
:)


Am 22.04.2007 um 17:51 schrieb Levent Kayan:

> On Sun, Apr 22, 2007 at 05:41:25PM +0200, Sebastian Rother wrote:
> > On Sun, 22 Apr 2007 01:32:35 -0400
> > kakaroto () kakaroto homelinux net (Youness Alaoui) wrote:
> >
> > > Hi,
> > >
> > > I'm a developer and admin of the aMSN project, someone just sent  
> > > me this link
> > > ( http://lists.grok.org.uk/pipermail/full-disclosure/2007-April/ 
> > > 053912.html ).
> > >
> > > I just grepped in the source code and that port (31337) is not  
> > > used by aMSN, it could be a port used for a
> > > profile (as a locking system), in which case the port is randomly  
> > > chosen each time, so this is probably just a
> > > fluke, he found the port of his current aMSN instance and used it.
> > >
> > > As I don't have more info, I can't really test this bug and find  
> > > the real cause and fix it, so it would be nice
> > > to have more info about this.
> > >
> > > Seeing how the user replied on the "Vendor contacted?" tag, I  
> > > wonder if I can get any more info on this matter.
> > >
> > > Thanks,
> > > KaKaRoTo
> > >
> > > _______________________________________________
> > > Full-Disclosure - We believe in it.
> > > Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> > > Hosted and sponsored by Secunia - http://secunia.com/
>
> 31337 is just an example port! aMSN is binding an ephermal port  
> after you've
> started it. Just do a netstat -an and look for ephermal ports. If  
> you get the
> aMSN port you can connect to it and sending some characters and  
> you'll get
> replies by aMSN.
> If you send an '{' or '}' character to that amsn port, you'll notice
> that aMSN is reporting an error message (amsn window).
> But if you going to send more than one character of '}' or '{'
> it will be killed. Yes, the whole client!
>
> To "Ismail Soenmez": What about "DDoS"? Sending characters to that  
> port in an
> "infinite" loop is a DDoS for you?
> -- 
> Name: Levent Kayan
> E-Mail: levent () corehack org
> GPG key:
> 0xd6794965
> Key fingerprint:
> FD20 03C3 DD7F 51BB 224F  F11E 0855 23C8 D679 4965
> Website:
> http://www.corehack.org/
>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> Hosted and sponsored by Secunia - http://secunia.com/

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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
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