[rsbac] UDF and stacked scanners

Javier Juan Martínez Cabezón tazok at rsbac.org
Sat Dec 26 16:16:22 CET 2015


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PD: Amon if this is your plan for the future it could be useful to
trap the return codes and asociate them to one AEF answer (as DONT
CARE, DENIED etc) to each scanner, I think adding attributes to each
scanner to reflect this (something like AUTH ones) and associate them
with rc_types or everything else would allow a fine grained access
control (for example tripwire send a 2 error code if the file has been
added. In this scenario AEF for example could return DONT_CARE if
rc_type is usrshare_t but return DENIED if error code is 8 (file changed
)

What do you think?


On 26/12/15 15:39, Javier Juan Martínez Cabezón wrote:
> 
> 
> Hi folks. after reading a bit UDF source code, is feasible having
> 2 scanners at the same time?,. Have you tested with this? Are they
>  stacked? for example marking clamavd as a scanner and set tripwire
>  as another one. With this approach You could make for example to 
> only allow access to a file if sha256sum is correct forbiding 
> access if none (tripwire returns code 8 if I remember correctly so
>  it would be seen as denied by UDF).
> 
> I think there could be multiple scenarios interesting to this 
> approach, as it could be in NAS scenarios or just as an integrity 
> "model" as BIBA :P or why not spamasassing ones :)
> 
> Maybe UDF could be a user space REG model :)
> 
> Have any of you hacked with this?
> 
> What do you think? _______________________________________________ 
> rsbac mailing list rsbac at rsbac.org 
> http://www.rsbac.org/mailman/listinfo/rsbac
> 

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