nanog mailing list archives

Re: Log4j mitigation


From: Jared Mauch <jared () puck nether net>
Date: Mon, 13 Dec 2021 14:32:19 -0500



On Dec 13, 2021, at 2:24 PM, Owen DeLong <owen () delong com> wrote:

The bigger problem seems to be the ever growing list of products you may be using which depend on it potentially 
without your knowledge.

This isn’t a new problem.

This is an great modern example showing how deeply embedded things could be, and they get worse with each of these 
nesting technologies as well, it may be embedded in a docker or VM image, or the class could be in some other JAR or 
zip you are not aware of, or could come back with an overlapping class definition based on the order things get loaded.

The same was always true with shared libraries and too-generic function names.

It’s such a blast from the past as I had felt we had moved past many of these interpreted environment or parser things 
by properly encoding strings with a function.

I’m really amazed at how widespread this is and what enterprise applications have had to get patched due to them 
embedding this software.

- jared

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