On Thursday, July 13, 2017 4:51:04 PM EDT Richard Guy Briggs wrote:
> In the process of updating the audit message type dictionary, I came
> across a couple of differences I wanted to clear up.
> 
> The descriptions in the userspace header file don't obviously line up
> with another source.  Can I get a clarification on these two messages:
> 
> AUDIT_USER_ACCT       1101    User system access authorization
>               Alt:    User account modification

This is access authorization. Authorization is different than authentication. 
Pam sends this event during login.


> AUDIT_USER_MGMT       1102    User account attribute change
>               Alt:    Userspace management data

This is strictly user account attribute changes. This is usually sent by 
something like usermod of shadow-utils.


> Similarly, these weren't clear to me as to whether they were active or
> passive reports.  Do these records say that the RESPonse happenned, or
> that the RESPonse should happen?

They should record what actually happened including success or not.


> AUDIT_RESP_ALERT      2201    Alert email was sent
> AUDIT_RESP_ANOMALY    2200    Anomaly not reacted to
> AUDIT_RESP_EXEC               2210    Execute a script
> AUDIT_RESP_HALT               2212    take the system down
> AUDIT_RESP_KILL_PROC  2202    Kill program
> AUDIT_RESP_SEBOOL     2209    Set an SELinux boolean
> AUDIT_RESP_SINGLE     2211    Go to single user mode
> AUDIT_RESP_TERM_ACCESS        2203    Terminate session
> AUDIT_RESP_TERM_LOCK  2208    Terminal was locked
>
> In particular, does AUDIT_RESP_EXEC mean something as simple as a script
> was executed in response to some detected event, or intrusion detection
> program responds to a threat originating from the execution of a
> program?

It means a script was executed in response.

-Steve

> I suspect they are all active and this EXEC one means a script
> was executed in response.
> 
> Thanks!
> 
> - RGB
> 
> --
> Richard Guy Briggs <[email protected]>
> Senior Software Engineer, Kernel Security, AMER ENG Base Operating Systems,
> Red Hat Remote, Ottawa, Canada
> Voice: +1.647.777.2635, Internal: (81) 32635, Alt: +1.613.693.0684x3545
> 
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