nanog mailing list archives
Re: update
From: Valdis.Kletnieks () vt edu
Date: Sun, 28 Sep 2014 17:50:53 -0400
On Sun, 28 Sep 2014 15:06:18 -0600, "Keith Medcalf" said:
Hopefully, Keith will admit that *THAT* qualifies as a "change" in his book as well. If attackers are coming at you with an updated copy of Metasploit, things have changed....Sorry to disappoint, but those are not changes that make the system more vulnerable. They are externalities that may change the likelihood of exploitation of an existing vulnerability, but does not create any new vulnerability. Again, if the new exploit were targeting a vulnerability which was fully mitigated already and thus could not be exploited, there has not even been a change in likelihood of exploit or risk.
So tell us Keith - since you said earlier that properly designed systems will already have 100% mitigations against these attackes _that you don't even know about yet_, how exactly did you design these mitigations? (Fred Fish's thesis paper, where he shows that malware detection is equivalent to the Turing Halting Problem, is actually relevant here). In particular, how did you mitigate attacks that are _in the data stream that you're charging customers to carry_? (And yes, there *have* been fragmentation attacks and the like - and I'm not aware of a formal proof that any currently shipping IP stack is totally correct, either, so there may still be unidentified attacks).
Attachment:
_bin
Description:
Current thread:
- Re: update, (continued)
- Re: update Jimmy Hess (Sep 28)
- RE: update Keith Medcalf (Sep 28)
- Re: update Jay Ashworth (Sep 28)
- Re: update Barry Shein (Sep 29)
- Re: update Valdis . Kletnieks (Sep 29)
- Re: update Jay Ashworth (Sep 28)
- Re: update William Herrin (Sep 27)
- RE: update Keith Medcalf (Sep 28)
- Re: update Valdis . Kletnieks (Sep 28)
- RE: update Keith Medcalf (Sep 28)
- Re: update Valdis . Kletnieks (Sep 28)
- Re: update Pete Carah (Sep 28)
- Re: update Valdis . Kletnieks (Sep 29)
- Message not available
- Re: update Larry Sheldon (Sep 28)
- Re: update George Michaelson (Sep 28)
- Re: update Merike Kaeo (Sep 29)
- Re: update Stephen Satchell (Sep 28)
- Re: update Pete Carah (Sep 29)
- Re: update Jay Ashworth (Sep 28)