[34912] in bugtraq
Re[2]: Denial of Service Vulnerability in IEEE 802.11 Wireless Devices
daemon@ATHENA.MIT.EDU (Jason Ostrom)
Mon May 17 12:37:06 2004
Date: Sat, 15 May 2004 20:27:14 -0500
From: Jason Ostrom <jpo@pobox.com>
Message-ID: <231404079.20040515202714@pobox.com>
To: Casper Dik <casper@holland.sun.com>
Cc: albatross@tim.it, bugtraq@securityfocus.com
In-Reply-To: <200405151835.i4FIZO519711@sunnl.Holland.Sun.COM>
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I wasn't there, but I know the Deauth Flood attack [1] is a very effective
attack that most 802.11b networks are vulnerable to. In security
testing, it is trivial to use a Prism2 based card with the HostAP
drivers and flip your wireless NIC into an AP, spoof the BSSID of the AP
station, and flood the wireless clients with deauth frames -
legitimate traffic never passes as a result. Reyk Floeter's Void11 Penetration testing tools
implement this attack [2].
I saw this attack mentioned in at least one book, but I don't know why
it wasn't released as a vulnerability. It is similar to the released
vulnerability, but involves spoofed frames instead of the physical layer.
[1] Aruba Networks "Thwarting DoS Attacks"
http://www.arubanetworks.com/products/whitepapers/secure-wireless/index.php?pg=3 `
[2] WLSec Projects
http://www.wlsec.net/projects/
Casper Dik> In last year's Usenix security symposium an attack which
Casper Dik> looked very much like one in the first
Casper Dik> paragraph was performed
Casper Dik> agains tthe audience (immediate linkloss was the result of the
Casper Dik> presenter pressing a button on his laptop).
Casper Dik> This was with with plain COTS components, so what is different
Casper Dik> with this attack or is it the same attack rediscovered?
Casper Dik> I don't remember it getting any press.
Casper Dik> Casper
