Feature #206

Knowing the ruleset id generating alerts

Added by Sebastien Tricaud about 16 years ago. Updated about 14 years ago.

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It is currently impossible to know the ruleset id that generated the alert. This is a very valuable information.


#1 Updated by Yoann VANDOORSELAERE about 16 years ago

  • Status changed from New to Assigned

There are two solutions to this problem, either add the ID to an additional_data field, otherwise use classification.ident. However, the later is only valid if we are 100% sure that rules can not generate alert for multiple classification. Ramon is the LML ruleset maintainer, he might have interesting opinion to share on this topic.

#2 Updated by about 16 years ago

I'll opt for doing it in additional_data. It's probably a good idea to add the revision in there, too.
In this case, the id and rev keywords lose their purpose, so a ruleset change of this type would require all the rules to be touched (which isn't a problem, just stating it)

#3 Updated by Yoann VANDOORSELAERE about 16 years ago

  • Status changed from Assigned to Closed
  • Resolution set to fixed

(In r9391) Add rule ID and revision for each rule that match, within [[AdditionalData]]. Fix #206.

#4 Updated by Yoann VANDOORSELAERE about 16 years ago

Certain rules using variable classification.text, we wouldn't be able to use the ID as classification.ident since IDMEF state:

       The "ident" attribute value MUST be unique for each particular
       combination of data identifying an object, not for each object.
       Objects may have more than one "ident" value associated with
       them.  For example, an identification of a host by name would
       have one value, while an identification of that host by address
       would have another value, and an identification of that host by
       both name and address would have still another value.
       Furthermore, different analyzers may produce different values for
       the same information.

Although this specific issue could be fixed, there is also another issue with alert generated from multiple rules, through context. Since we want to record all matched rules ID and revision, using [[AdditionalData]] should be the way to go.

This has been implemented in r9391.

#5 Updated by Yoann VANDOORSELAERE about 14 years ago

  • Project changed from PRELUDE SIEM to Prelude-LML
  • Category deleted (4)
  • Target version deleted (0.9.9)

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