10-17-2017 09:16 AM - edited 03-20-2019 09:37 PM
We have some SSID's broadcast using WPA2 authentication and have "Fast Transition" configured.
Recently KRACK Attack vulnerability is released. does this security vulnerability have patch already?
TIA
Solved! Go to Solution.
10-23-2017 01:12 AM
Software fix for the KRACK vulnerability is now available for download. They are 8.0.152.0, 8.2.164.0, 8.3.132.0 and 8.5.105.0.
10-17-2017 02:04 PM - edited 10-17-2017 02:04 PM
Cisco will be releasing a fix very soon.
Remember that this vulnerability affects not just the APs but any wireless client with a wireless NIC. So patching the APs won't fix the issue as the wireless client(s) needs to be patched as well.
10-17-2017 06:59 PM
10-17-2017 11:16 PM
See here for more information: https://supportforums.cisco.com/t5/security-and-network-management/severe-flaw-in-wpa2-protocol-krack-attack/td-p/3199201
10-20-2017 11:00 PM
Hi Mate,
If you have a WLAN with FT(802.11r) enabled, please follow the work around provided in this Cisco security advisory: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171016-wpa#workarounds, Please subscribe to notifications of this document for the latest news and fixes.
Disabling FT (802.11r) on the AP/WLC side is an effective workaround to the AP side vulnerability, and the client-side vulnerabilities will need to be addressed on the client side.
Regards,
Divya
10-21-2017 12:37 AM
Here is schedule of software fix release dates.
10-21-2017 04:54 AM
10-23-2017 01:12 AM
Software fix for the KRACK vulnerability is now available for download. They are 8.0.152.0, 8.2.164.0, 8.3.132.0 and 8.5.105.0.
10-24-2017 09:39 AM
10-24-2017 10:05 AM
10-29-2017 03:46 AM
A quick update to anyone reading this thread and intending to upgrade to 8.3.132.0:
Cisco TAC has recommended anyone to HOLD OFF upgrading to 8.3.132.0. TAC has identified a Severity 1 bug which causes the controller to crash after upgrading to 8.3.132.0.
There are no reported issues in regards to other versions.
11-02-2017 07:23 AM
11-02-2017 07:27 AM
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