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Cisco IOS Malformed IPV4 Packet Denial of Service Vulnerability

JungChoi77534
Level 1
Level 1

Hello again,

 

I am seeing the vulnerability listed in the title on our client's C3750X Catalyst switches.


Some of the switches do run older IOS (one is as old as 12.2) but the one that I have been working on to fix is on 15.2(4)E7. I know that E10 is now available but I would think that a vulnerability reported back in years back would be addressed on any of the updates since. 


I even tried creating an ACL to deny 53 55 77 on the switch and assigning it to all 48 interfaces but I am still seeing the scan report this vulnerability.

Perhaps I didn't create the ACL correctly or applied it correctly but I am at a lost as to what to do next. 

 

I have attached a copy of the current running config to see if anyone can point me in the right direction.

 

Thank you

 

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