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Cisco Clean Access File Upload Authentication Bypass
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SUMMARY
" <http://www.cisco.com/en/US/products/ps6128/index.html> Cisco Clean
Access (NAC Appliance) is an easily deployed Network Admission Control
(NAC) solution that can automatically detect, isolate, and clean infected
or vulnerable devices that attempt to access your network - regardless of
the access method. "
Cisco Clean Access does not validate user authentication, allowing
attackers to upload any file they wish to the server, and even cause a DoS
by filling up all the storage space.
DETAILS
Vulnerable Systems:
* Cisco Clean Access version 3.5.5
A user without a username or password can upload files to a web visible
folder using the pages: /admin/uploadclient.jsp, apply_firmware_action.jsp
or file.jsp. The user could also fill up the drive as it seems, aside from
/boot, the rest of the drive is one big partition. Filling up the drive
would most definitely cause the system to lock up in its current
configuration.
ADDITIONAL INFORMATION
The information has been provided by <mailto:alex@box.sk> Alex.
The original article can be found at:
<http://www.awarenetwork.org/forum/viewtopic.php?p=2236>
http://www.awarenetwork.org/forum/viewtopic.php?p=2236
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