Re: [Full-Disclosure] Thomson TCW690 Denial Of Service Vulnerability

[Andres Tarasco <atarasco@xxxxxxxxx>]

Seems to be the same vulnerability published time ago

http://www.securityfocus.com/bid/9091


On Sat, 19 Feb 2005 10:43:44 +0100, MurDoK <murdok.lnx@xxxxxxxxx> wrote:
> I found a vulnerability in this cablemodem which a malicious user inside *LAN
> can reset it easily.
> This cablemodem model is given by the spanish ISP "AUNA".
> 
> Details
> =======
> 
> Product: Thomson TCW690 cablemodem
> Affected Version: ST42.03.0a (possible others)
> Immune Version: ???
> Security-Risk: high
> Exploit: yes
> Product-URL:
> http://www.thomson.net/EN/Home/MiniSites/BAP/Cable/ModelDetail.html?category=cab%20modem%20Eurodocsis&model=TCW690
> Vendor-URL: http://www.thomson.net/
> Vendor-Status: informed but no response
> 
> Description
> ===========
> 
> The http server inside this cablemodem doesn't check the length of GET
> requests. If you exploit this bug the router will become unstable for ~50
> seconds.
> 
> Exploit
> =======
> 
> No code needed. Just open your browser to
> http://192.168.0.1/AAAA[about 2000 A's]AAA
> 
> Fix
> ===
> 
> No response from vendor. There isn't fix available.
> 
> Vendor Status
> ==============
> 2005.02.07 - Bug found.
> 2005.02.07 - Informed the vendor broadband@xxxxxxxxxxx, no response.
> 2005.02.11 - Informed the vendor webmaster@xxxxxxxxxxxx
> 2005.02.19 - Public disclosure.
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.netsys.com/full-disclosure-charter.html
> 


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