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Re: [2600] Question related to ALC_FLR



Hi

Thank you for your explanation.

Can I have another question?

That means that the corrected MFD have to certified again anyway

1) Minor case : Send "Assurance Maintenance report" and get approval to
keep the product to be valid as CC certified product.

2)Major case : Evaluate with the corrected MFD  and get certified again.

These process have to be done anyway if you found bugs in CC certified
product, and want to keep customer having certified product.

So It looks like to me that ALC_FLR do not have to be in PP from
maintenance point of view.


What do you think?

Best Regards.

Shigeru Ueda.




On Wed, 17 Oct 2007 15:46:01 +0100
"Milford, Simon" <simon.milford@SIVENTURE.COM> wrote:

> Hi all,
> 
> My view, as a CC lab in the UK scheme is this.
> 
> ALC_FLR is about what processes you have internal to the development, to
> identify, track and resolve flaws in the product.  This will be
> important to those customers who want to be sure that you as a developer
> do have processes in place to respond to flaws.
> 
> You are correct that implementing changes to a certified product will,
> potentially, result in the certificate no longer being valid.  This is
> why CC has the Assurance Continuity process, which allows you to
> classify (in conjunction with your CC lab or the Scheme) patches and
> fixes as either Minor or Major.  Minor means that there is no impact on
> the security functionality, and these can be implemented without
> affecting the certified status of the product.  Major means that there
> probably is some impact on the certification, then the Scheme will
> decide whether any further evaluation work needs to be done to look at
> the Major changes, before they too can be included in the certified
> configuration.  
> 
> This may be of more interest to Government clients who are particularly
> concerned about having a certified device, as opposed to those who may
> want to buy a product from someone known to produce certified devices,
> but also to want the latest patches.
> 
> As an example, here is a link to an Assurance Maintenance report,
> showing that the Scheme (in this case, the German Scheme) have assessed
> the changes to be Minor in nature and, therefore, the certification
> status remains valid.
> 
> <http://www.commoncriteriaportal.org/public/files/epfiles/0379-ma1.pdf>
> 
> The two processes are not mutually exclusive, so you can include FLR in
> the evaluation, and also then enter Assurance Maintenance to maintain
> the certification once the initial evaluation is complete.
> 
> Hope that helps!
> 
> Best regards
> 
> 
> Simon
> Simon Milford
> Head of SiVenture
> Unit 6
> Cordwallis Park
> Clivemont Road
> Maidenhead
> Berkshire
> SL6 7BU
>  
> Tel: +44 (0)1628 651 366
> Mob: +44 (0) 7881 918 199
> Fax: +44 (0)1628 651 365
>  
> simon.milford@siventure.com
>  
> www.siventure.com
> 
> 
> -----Original Message-----
> From: UEDA Shigeru [mailto:ueda.shigeru@CANON.CO.JP] 
> Sent: 17 October 2007 01:17
> To: STDS-2600@LISTSERV.IEEE.ORG
> Subject: [2600] Question related to ALC_FLR
> 
> Hi
> 
> Can I have your opinion regarding ALC_FLR? ( because I have no idea how
> to solve my problem )
> 
> As you know, ALC_FLR is the "Flaw remediation" which  requires that
> discovered security flaws be tracked and corrected by the developer.
> 
> However, once corrected, the TOE becomes to be different from the TOE
> which was certified. this is my understanding.
> 
> So you will need to get certified again with the corrected TOE before
> providing it to the customer.
> 
> However, ALC_FLR does not require this process.
> 
> Is that mean that we leave the risk that vendor provides un-certified
> software when he corrected the security bug?
> 
> Or, do you (or NIAP) think that corrected TOE is still the certified one
> ?
> 
> Or should we ask vendor to get certified again with the corrected TOE
> before providing it to the customer? 
> 
> Regards.
> 
> Shigeru Ueda.
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