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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
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2
src/analyzer/protocol/ssh/ssh-protocol.pac
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@ -415,7 +415,7 @@ refine connection SSH_Conn += {
return true;
bro_analyzer()->Weird(fmt("ssh_unknown_kex_algorithm=%s", c_str(kex_algorithm_)));
bro_analyzer()->Weird("ssh_unknown_kex_algorithm", c_str(kex_algorithm_));
return true;
}