I was wondering if someone can tell me when you can leave a more stable release for the vulnerability (Unauthorized Access Vulnerability (CSCtu56709)).
I have 6 wireless controllers with the affected version (controllers 4402 and one 3750.)
in security advisory cisco indicate that I have to make the migration from version 18.104.22.168 to version 22.214.171.124 ... but at times had problems with one of these releases ... because the release had a bug and there was no patch for the same and I had to do a rollback
This vulnerability exists if CPU-based access control lists (ACLs) are configured in the wireless controller. An attacker can exploit this vulnerability by connecting to the controller over TCP port 1023.
but how did the hacker (attacker) discovers and connects to the controller interface ip range configured in the ACL is different from the management IP of the parent.
Controller IP = 10.0.240.250
IP client wireless (free) = 172.16.20.47-->(wireless guest)
1st ACL deny any ip to the target 172.16.0.0
i test connect my ipad to the controller ip with telnet and use port 1023 but connection give me error
for my security i disable wireless managment controllers...
so there is possibility of the hacker access controller??
The engineering team got back to us saying that the trigger for this is a CPU ACL applied on the WLC (4400/foxhound/wism). If there is a permit any/any rule it overrides the port 1023 rule and allows it. So, if your controllers have the permit any/any rule applied when CPU ACLs are present. If you have such rule, then those controllers will be affected.
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Check the phy id from “show controllers ethernet-controller phy” output.
<snip from show controllers ethe...
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