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MadWifi "xrates" Element Denial of Service
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Secunia Advisory:
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SA27197
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Release Date:
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2007-10-12
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Last Update:
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2007-10-18
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Popularity:
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7,891 views
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Critical:
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Less 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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| Software: | MadWifi 0.x
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| CVE reference: | CVE-2007-5448
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Description:
Clemens Kolbitsch and Sylvester Keil have reported a vulnerability in MadWifi, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error in the processing of beacon frames. This can be exploited via a specially crafted beacon frame with an overly large "length" value (greater than 15) in the extended supported rates element ("xrates").
Successful exploitation causes the driver to exit and results in a kernel panic.
The vulnerability is reported in version 0.9.3.2. Other versions may also be affected.
Solution:
Update to version 0.9.3.3.
Provided and/or discovered by:
Clemens Kolbitsch and Sylvester Keil, Secure Systems Lab / SEC Consult
Changelog:
2007-10-15: Added CVE reference.
2007-10-18: Updated "Solution" section.
Original Advisory:
MadWifi:
http://sourceforge.net/project/shownotes.php?release_id=547876
SEC Consult:
http://www.sec-consult.com/fileadmin/Advisories/20071012-0-madwifi-xrates.txt
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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