nanog mailing list archives

Re: Anyone seeing ping corruption?


From: "Valdis Klētnieks" <valdis.kletnieks () vt edu>
Date: Mon, 20 Dec 2021 19:26:00 -0500

On Mon, 20 Dec 2021 22:45:06 +0000, Steven Champeon said:

Are there even enough dialup connections and ancient modems left that POD
is a thing anyone needs to worry about?

It wasn't just dialup and modems.  The Ping of Death had to do with sending
a packet that was already 64K in size, that would require an ICMP response that
would try to include the entire packet - corrupting the memory following the
buffer the response was built in. Lots of ethernet-connected Windows systems
got BSOD'd that way.

Having said that, I'm sure there's still unpatched systems out there.  Probably
a few that are *still* unpatched against the 1990s IPV4 version, but a lot more
likely for the 2013 and 2020 IPv6 versions against Microsoft systems.

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