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Fritz!Box UDP Packet SIP Denial of Service
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Secunia Advisory:
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SA23868
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Release Date:
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2007-01-22
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Last Update:
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2007-01-24
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Popularity:
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6,201 views
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | AVM Fritz!Box 7050
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| CVE reference: | CVE-2007-0431
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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.
ftp://ftp.avm.de/fritz.box/fritzbox.fon_wlan_7050/firmware/
Provided and/or discovered by:
Matthias Wenzel
Changelog:
2007-01-24: Changed "Solution Status" and "Solution" sections to include information on firmware update.
2007-01-24: Added CVE reference.
Original Advisory:
http://mazzoo.de/blog/2007/01/18#FritzBox_DoS
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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