Re: DoS against AVM Fritz!Box 7050 (and others)

[Matthias Wenzel <bugtraq-list () mazzoo de>]

A new FW version with the fix is released:

ftp://ftp.avm.de/fritz.box/fritzbox.fon_wlan_7050/firmware/

Matthias

collin () betaversion net wrote:
> Denial of Service against AVM Fritz!Box 7050 (and others)
>
> Discovered by: Matthias Wenzel
> Advisory: http://mazzoo.de/blog/2007/01/18#FritzBox_DoS
>
> Manufacturer: AVM (www.avm.de)
> Product: Fritz!Box 750 (and others)
>
> Vendor was notified 6 month ago (see blog entry by Matthias)
>
> Sending a zero-length UDP packet to port 5060 (SIP) of a AVM Fritz!Box will
> crash the VoIP-telephony application. This works from any IP-interface,
> including the DSL line.
>
>
> Collin (only delivering the message to FD and BugTraq)