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RE: Re: Cisco IOS Denial of Service that affects most Cisco IOS routers- requires power cycle to recover
From: Cedric Blancher <blancher () cartel-securite fr>
Date: 24 Jul 2003 08:49:32 +0200
Le mer 23/07/2003 à 19:43, lee.e.rian () census gov a écrit :
So... has anyone been able to verify that the problem occurs when the TTL expires without the packet being addressed to the router? Or is it a requirement that the evil packet be addressed to the router?
I checked this and it appears packets have to be addressed to target router. Transit evil packets which TTL would expire on a router won't affect it. My tests were performed using Scapy to generate following packets : IP proto set to vulnerable ones TTL set to expire on target router IP payload set to 26 "X" -- http://www.netexit.com/~sid/ PGP KeyID: 157E98EE FingerPrint: FA62226DA9E72FA8AECAA240008B480E157E98EE _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
Current thread:
- Re: Cisco IOS Denial of Service that affects most Cisco IOS routers- requires power cycle to recover lee . e . rian (Jul 21)
- RE: Re: Cisco IOS Denial of Service that affects most Cisco IOS routers- requires power cycle to recover Curt Purdy (Jul 22)
- <Possible follow-ups>
- Re: Cisco IOS Denial of Service that affects most Cisco IOS routers- requires power cycle to recover Shawn Bernard (Jul 22)
- RE: Re: Cisco IOS Denial of Service that affects most Cisco IOS routers- requires power cycle to recover lee . e . rian (Jul 23)
- RE: Re: Cisco IOS Denial of Service that affects most Cisco IOS routers- requires power cycle to recover Cedric Blancher (Jul 24)
- Re: Cisco IOS Denial of Service that affects most Cisco IOS routers- requires power cycle to recover Richard Johnson (Jul 24)
- RE: Re: Cisco IOS Denial of Service that affects most Cisco IOS routers- requires power cycle to recover Cedric Blancher (Jul 24)