Re: AnalogX Proxy DoS

[Iván Arce <core.lists.bugtraq () CORE-SDI COM>]

Pavel Machek wrote:
> Hi!
>
> > Severity:               Low
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> > Proof of concept
> >
> >         Sending an FTP "USER" command containing approximately 370 or
> >         more characters to the proxy server FTP TCP port 21 will crash
> >         it.
> >
> >         Example #1: nc 192.168.1.2 21 < ftp.txt
> >
> >         Where ftp.txt contains:
> >         "USER [long string of ~370 chars]@isp.com"
>
> Denial of service only? It does not look so. It looks much more like
> possibility to run arbitrary code on your windows machine! Or is
> there specific reason why this can't be used to run arbitrary code?
>                                                                 Pavel
> PS: It seems to me that many "Denial of Services" for windows machines
> are "run arbitrary code" instead. It would be nice if people in
> advisories told why their think that "run arbitrary code" is not
> possible.


In the past months i've seen this type of advisories a lot. Apparently
the security people is not taking the time to assess the extend of the
problems they find.
I'd say that almost all buffer overflows UNLESS stated otherwise,
led to the posibility to run arbitrary code on the vulnerable machine.
A not explotable buffer overflow is generally harder to find than an
exploitable one.

 -ivan


> --
> I'm pavel () ucw cz. "In my country we have almost anarchy and I don't care."
> Panos Katsaloulis describing me w.r.t. patents at discuss () linmodems org

--
"Understanding. A cerebral secretion that enables one having it to know
 a house from a horse by the roof on the house,
 It's nature and laws have been exhaustively expounded by Locke,
 who rode a house, and Kant, who lived in a horse." - Ambrose Bierce


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