Public bug reported:
[IMPACT]
There is a requirement for Common Criteria EAL2 certification that changes to
the system's hardware clock be audited/monitored. In Ubuntu the hwclock command
can be used to alter the system's hardware clock. Thus this event needs to be
audited for EAL2. The hwclock command within util-linux has the ability to
create an audit event when the system's hardware clock is altered, but this
ability is enabled via the --with-audit config option. This option is currently
not enabled.
Only the hwclock and the login commands within util-linux package use
this --with-audit config option to enable auditing. However, it appears
the login command is not built nor shipped in util-linux. Ubuntu uses
the login command from shadow instead. Thus, only hwclock command would
be affected by this change. The change would enable (1) call to
audit_open to create a netlink socket descritor. (2) generate an audit
entry when system hardware clock altered. The entry will be logged into
the /var/log/audit/audit.log IF auditd is installed and running.
[FIX]
[TEST]
This has been tested on both P8 and amd64 architectures. With the patch
all the Common Criteria testcases pass for hwclock. Before this patch,
the functional part of the testcase passed, but the check for the
triggered audit records would fail.
[REGRESSION POTENTIAL]
The regression potential for this should be small. This change does not take
away from any current functionality. It just adds the ability to generate an
audit entry when system hardware clock is altered.
** Affects: util-linux (Ubuntu)
Importance: Undecided
Status: New
** Summary changed:
- Add "--with-audit" config option so that the hwclock command creates audit
records when it is used to alter the hardware clock.
+ [SRU][xenial] Add "--with-audit" config option so that the hwclock command
creates an audit record when the hardware clock is altered.
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https://bugs.launchpad.net/bugs/1722313
Title:
[SRU][xenial] Add "--with-audit" config option so that the hwclock
command creates an audit record when the hardware clock is altered.
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