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Insecure Library Loading
Moderately critical

Fritz!Box UDP Packet SIP Denial of Service

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Release Date:  2007-01-22    Last Update:  2007-01-24    Views:  10,579

Secunia Advisory SA23868

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

Operating System:

CVE Reference(s):

Description


Matthias Wenzel has reported a vulnerability in AVM Fritz!Box 7050, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the handling of certain UDP packets. This can be exploited to crash the VoIP application by sending a UDP packet with size 0 to the SIP Port (5060/UDP).


Solution:
Apply latest firmware update.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Matthias Wenzel

Original Advisory:
http://mazzoo.de/blog/2007/01/18#FritzBox_DoS

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Fritz!Box UDP Packet SIP Denial of Service

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