[Bug 1722313] Re: [SRU][xenial] Enable auditing in util-linux.

[Joy Latten]

** Description changed:

  [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.
+ Enable auditing in util-linux. The config option, --with-audit enables auditing.
+  
+ Only the hwclock and the login commands within util-linux package have source code for auditing. But that source code is disabled by default and requires the config option, --with-audit to enable it. 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.
  
- 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.
+ The change would enable the hwclock command to generate an audit log
+ message to /var/log/audit/audit.log whenever it changes the hardware
+ clock. This message will only get logged if auditd daemon is running.
+ Otherwise, nothing gets logged.
+ 
+ That the hwclock generates an audit message when hardware clock is
+ changed is a requirement for Common Criteria EAL2 certification for
+ Xenial.
  
  [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. Attached the Common Criteria
  testcase below.
  
  Also, the util-linux package has testcases that get run during the
  build. All of these pass. Pointer to build log below.
  
  [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.

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https://bugs.launchpad.net/bugs/1722313

Title:
  [SRU][xenial] Enable auditing in util-linux.

Status in util-linux package in Ubuntu:
  New
Status in util-linux source package in Xenial:
  New
Status in util-linux source package in Zesty:
  New
Status in util-linux source package in Artful:
  New
Status in util-linux package in Debian:
  Unknown

Bug description:
  [IMPACT]
  Enable auditing in util-linux. The config option, --with-audit enables auditing.
   
  Only the hwclock and the login commands within util-linux package have source code for auditing. But that source code is disabled by default and requires the config option, --with-audit to enable it. 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 the hwclock command to generate an audit log
  message to /var/log/audit/audit.log whenever it changes the hardware
  clock. This message will only get logged if auditd daemon is running.
  Otherwise, nothing gets logged.

  That the hwclock generates an audit message when hardware clock is
  changed is a requirement for Common Criteria EAL2 certification for
  Xenial.

  [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. Attached the Common Criteria
  testcase below.

  Also, the util-linux package has testcases that get run during the
  build. All of these pass. Pointer to build log below.

  [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.

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