Re: [redhat-lspp] Re: cups userspace -- trusted programs?
Matt Anderson wrote:
Michael C Thompson wrote:
>>> Personally, I think these tools should generate messages since they
>>> are a source for leaking information, and therefore should be
>>> restricted to administrators.
I don't think they should be considered a source for leaking
information. The only thing I see isn't a leak so much as a (extremely
low bandwidth) covert channel of "is the printer enabled or disabled?"
Since the use of these programs is restricted, we're covered under
no-evil-admin.
How are these restricted? Or rather, how are they supposed to be
restricted? I am able to cupsenable, cupsdisable, accept and reject my
printer as a non-root user under both permissive and enforcing modes.
> Aside from what is *required*, I thought it would be a good thing
to
> log the queue/printer enable/disable. However, if cups is logging
> that, I'm not sure it is worth being redundant in our logs.
As long as LogLevel is set to info or higher you'll get a message in
/var/log/cups/error_log like:
[Timestamp] Printer 'foo' stopped by 'root'.
I think I agree with you that its probably not worth being redundant,
but if for someone finds a requirement for this to go to the audit log I
don't see any issues around adding that.
-matt