Re: Possible typo in 22-ignore-chrony.rules
On Sunday, January 17, 2021 11:42:38 PM EST Joe Wulf wrote:
This snippit in both rules in that file (for both v2.8.5 and v3.0.0)
"-F
auid=unset -Fuid=chrony" for the second "-F" seems to be missing a space
after the "-F". Correct?
Yeah, it looks that way. Fixed. Thanks!
IRT to the comment in this rule file, "These
rules suppress the time-change event when chrony does time updates"; does
that mean IF these two rules were not included or commented-out, that the
chrony time updates would 'log' events in the audit log?
Yes.
How do these rules 'work' to suppress chrony time updates
from being
logged?
The audit rules is a first match wins system. These rules are in a file with a
22 in the name which preceeds rules whose file name starts with 30. In 30-
stig.rules, we have a rule that asks for any use of adjtimex to be logged
which is the syscall chrony uses to update time. Since the rule in 22 has a
never action and it preceeds the one from the stig, it matches first and takes
the never action which is not to log it.
-Steve