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Cisco Bug: CSCtd61175 - J: 5508 crashed due to corrupted CAPWAP packet headers

Last Modified

Jun 10, 2010

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases


Description (partial)


As a proof of concept, a Packetstorm chassis capable of manipulating packet traffic was inserted in between one of my 5508s and the switch it is normally connected to.

The Packetstorm was then configured to modify bytes in the CAPWAP packet header to see what would happen when the 5508 received them.

A client was associated to the AP whose traffic was being manipulated and was doing 5000 byte pings to a wired host

When the packet storm was enabled - the 5508 crashed shortly afterwards.


In an attempt to synthesize a possible packet corruption scenario, a Packetstorm chassis was used
to corrupt the CAPWAP header of packets inbound to the controller from an AP.
A wireless client was actively passing traffic on this AP during the test
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