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Remove variable content from weird names

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This changes many weird names to move non-static content from the
weird name into the "addl" field to help ensure the total number of
weird names is reasonably bounded.  Note the net_weird and flow_weird
events do not have an "addl" parameter, so information may no longer
be available in those cases -- to make it available again we'd need
to either (1) define new events that contain such a parameter, or
(2) change net_weird/flow_weird event signature (which is a breaking
change for user-code at the moment).

Also, the generic handling of binpac exceptions for analyzers which
to not otherwise catch and handle them has been changed from a Weird
to a ProtocolViolation.

Finally, a new "file_weird" event has been added for reporting
weirdness found during file analysis.
This commit is contained in:
Jon Siwek 2019-04-01 18:27:53 -07:00
parent 956674745b
commit 995368e68c
47 changed files with 289 additions and 152 deletions
Download patch file Download diff file Expand all files Collapse all files

10
scripts/base/frameworks/notice/weird.bro
View file

@ -422,3 +422,13 @@ event net_weird(name: string)
local i = Info($ts=network_time(), $name=name);
weird(i);
}
event file_weird(name: string, f: fa_file, addl: string)
{
local i = Info($ts=network_time(), $name=name, $addl=f$id);
if ( addl != "" )
i$addl += fmt(": %s", addl);
weird(i);
}