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AVM Fritz!Box 7050 (and others) DoS



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



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)



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