* message type dictionary clarifications
@ 2017-07-13 20:51 Richard Guy Briggs
2017-07-13 21:02 ` Steve Grubb
0 siblings, 1 reply; 3+ messages in thread
From: Richard Guy Briggs @ 2017-07-13 20:51 UTC (permalink / raw)
To: linux-audit
Hi,
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
AUDIT_USER_MGMT 1102 User account attribute change
Alt: Userspace management data
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?
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? I suspect they are all active and this EXEC one means a script
was executed in response.
Thanks!
- RGB
--
Richard Guy Briggs <rbriggs@redhat.com>
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: message type dictionary clarifications
2017-07-13 20:51 message type dictionary clarifications Richard Guy Briggs
@ 2017-07-13 21:02 ` Steve Grubb
2017-07-13 23:48 ` Richard Guy Briggs
0 siblings, 1 reply; 3+ messages in thread
From: Steve Grubb @ 2017-07-13 21:02 UTC (permalink / raw)
To: linux-audit; +Cc: Richard Guy Briggs
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 <rbriggs@redhat.com>
> 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
>
> --
> Linux-audit mailing list
> Linux-audit@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-audit
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: message type dictionary clarifications
2017-07-13 21:02 ` Steve Grubb
@ 2017-07-13 23:48 ` Richard Guy Briggs
0 siblings, 0 replies; 3+ messages in thread
From: Richard Guy Briggs @ 2017-07-13 23:48 UTC (permalink / raw)
To: Steve Grubb; +Cc: linux-audit
On 2017-07-13 17:02, Steve Grubb wrote:
> 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.
Ok, I'll update the "alt" text, since it is clearly wrong.
> > 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.
Ok, again, I'll update the "alt" text, since it is a bit vague.
> > 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.
Ok, so active.
> > 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.
Ok, good, thanks.
> -Steve
>
> > I suspect they are all active and this EXEC one means a script
> > was executed in response.
> >
> > Thanks!
> >
> > - RGB
- RGB
--
Richard Guy Briggs <rgb@redhat.com>
Sr. S/W Engineer, Kernel Security, Base Operating Systems
Remote, Ottawa, Red Hat Canada
IRC: rgb, SunRaycer
Voice: +1.647.777.2635, Internal: (81) 32635
^ permalink raw reply [flat|nested] 3+ messages in thread
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