Avatar of sunhux
sunhux
 asked on

Cisco buffer overflow vulnerability

Got an IPS alert that says " Telnet: Cisco Buffer Overflow Vulnerability (High)
Network Security Platform has detected a  "High (9)" attack.  
Attack type: Signature: telnet-cmd-too-long"

Can I correctly say:
a) if we don't have telnet service enabled on all our Cisco devices, then we're not
    vulnerable (even if telnet is enabled on some other legacy systems) ?
b) this only affects Cisco 676/677 devices, so if we don't have these devices in
     our environment, then we're not vulnerable

If I'm mistaken to make above 2 statements, do elaborate & explain
CiscoVulnerabilitiesNetwork SecuritySecurityIBM System i

Avatar of undefined
Last Comment
Gary Patterson, CISSP

8/22/2022 - Mon
sunhux

ASKER
If we have PCs that do telnet to our AS400 servers, would this activity
trigger such alerts?
sunhux

ASKER
Correction:
> Cisco 676/677
   should be
Cisco 678/677

The other question is we don't always get this alert, so is it likely that this is triggered
by telnet  from a PC to the AS400 host?  Or someone issued a different telnet access
this time round?
ASKER CERTIFIED SOLUTION
Gary Patterson, CISSP

THIS SOLUTION ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
GET A PERSONALIZED SOLUTION
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.
This is the best money I have ever spent. I cannot not tell you how many times these folks have saved my bacon. I learn so much from the contributors.
rwheeler23