Does the audit subsystem have the ability to dynamically create new
auditing rules using another event as the trigger?
Any examples on how to implement that?
Kevin
On 04/22/2014 03:39 PM, Satish Chandra Kilaru wrote:
Even if there is a file system it may not be mounted on a known a folder.
But monitoring access of sensitive content and execution of burning
programs can provide clues.
You can use audit dispatcher to react to audit events.... When u get a
MOUNT event you can see where sr0 is mounted and start a new watch for
that path. If you are not writing an ISO I think it has to be mounted.
On Tuesday, April 22, 2014, Boyce, Kevin P. (AS) <[email protected]
<mailto:[email protected]>> wrote:
Hmm. That is an interesting thought, but I would think there is
no filesystem that would be able to be mounted until the user has
written something to the disc first. In other words I don't
believe blank media gets mounted as part of the burning process
(at least not in my experience anyways--maybe I'd need to turn
some feature on for that?).
Kevin
On 04/22/2014 03:32 PM, Satish Chandra Kilaru wrote:
One way is to watch for the main folder where /dev/sr0 is
mounted. That way everything under that is watched.
If an ISO is burned then we cannot know what is inside that ISO.
An alternative is to watch access to known sensitive files on the
machine (whose cd burner you want to watch). and known burning
commands. That way you know who is accessing sensitive content.
If the same login session generates events for these files and
programs they might be burning sensitive files.
On Tue, Apr 22, 2014 at 3:14 PM, Boyce, Kevin P. (AS)
<[email protected]
<javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote:
Does anyone know if it is possible to audit what filenames
users are burning to optical media?
I suppose I can put a watch on the /dev/sr0 device for write
events, but this does not give me any idea what was written
to the disc. I suppose I could also set an execve watch all
burner programs, eg. /usr/bin/k3b /usr/bin/brasero
/usr/bin/cdrecord /usr/bin/cdrdao /usr/bin/dvdrecord, to
know if someone opened the burning interface; but how could I
tell what it was they were writing?
Any suggestions are welcome.
Kevin
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