[cabfpub] Ballot 221 v3: Two-Factor Authentication and Password Improvements

Tim Hollebeek tim.hollebeek at digicert.com
Tue May 15 15:34:10 UTC 2018


+2

 

From: Public [mailto:public-bounces at cabforum.org] On Behalf Of Ryan Sleevi via Public
Sent: Tuesday, May 15, 2018 11:03 AM
To: Patrick Tronnier <Patrick.Tronnier at oati.net>
Cc: CA/Browser Forum Public Discussion List <public at cabforum.org>
Subject: Re: [cabfpub] Ballot 221 v3: Two-Factor Authentication and Password Improvements

 

So I agree that changes the wording to no longer favor incumbents - but I think it's problematic for a different reason, in that it introduces a new form of severability, similar to 9.16.3.

 

9.16.3 applies to law, regulation, or government order - and it's not intended as a blanket get out of jail free card. It's a temporary thing, and the reality is that Root Stores may (and almost certainly will) set sunsets on that severability. It provides temporary redemption for those CAs that are, by virtue of their physical existence, placed in an awkward bind.

 

Yet this situation you describe is not that. It's a voluntary action by the CA, to entangle two or more PKIs with conflicting requirements, and to argue that the more favorable one wins. While I realize that the counter-argument is "Well, we want to rotate passwords more frequently, so we can be more secure" - but part of the point is that this doesn't make the systems more secure, and can tangibly make them less secure.

 

Two years seems like a generous sunset to work on a transition plan to disentangle these separable requirements, thus there's no need for an express severability clause to be added.

 

On Tue, May 15, 2018 at 9:30 AM, Patrick Tronnier <Patrick.Tronnier at oati.net <mailto:Patrick.Tronnier at oati.net> > wrote:

Hi Ryan,

 

“Previous audits” was meant to prove the CA was audited against password criteria separate from, or in addition to, the BR’s… which is a burden to incumbents such as OATI, GlobalSign, etc.

 

Also, we have considered segmenting our PKI but because the server certificates protect web sites which fall under both Web PKI and Energy Industry standards (NERC, NAESB) I am not sure how this can be achieved. 

 

Perhaps this is better wording? 

 

“If passwords are required to be changed periodically, that period SHOULD be at least two years.  Effective April 1, 2020, if passwords are required to be changed periodically, that period SHALL be at least two years. Compliance to other standards which conflict with this password requirement must be disclosed as part of the audit process."

 

Thanks

 

With kind regards,

 

Patrick Tronnier

Principal Security Architect &

Sr. Director of Quality Assurance & Customer Support

Phone: 763.201.2000 

Direct Line: 763.201.2052

Open Access Technology International, Inc. 

3660 Technology Drive NE, Minneapolis, MN <https://maps.google.com/?q=3660+Technology+Drive+NE,+Minneapolis,+MN&entry=gmail&source=g>  

 

CONFIDENTIAL INFORMATION: This email and any attachment(s) contain confidential and/or proprietary information of Open Access Technology International, Inc. Do not copy or distribute without the prior written consent of OATI. If you are not a named recipient to the message, please notify the sender immediately and do not retain the message in any form, printed or electronic.

 

From: Public [mailto:public-bounces at cabforum.org <mailto:public-bounces at cabforum.org> ] On Behalf Of Ryan Sleevi via Public
Sent: Monday, May 14, 2018 11:43 PM
To: Patrick Tronnier <Patrick.Tronnier at oati.net <mailto:Patrick.Tronnier at oati.net> >; CA/Browser Forum Public Discussion List <public at cabforum.org <mailto:public at cabforum.org> >
Subject: Re: [cabfpub] Ballot 221 v3: Two-Factor Authentication and Password Improvements

 

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Doesn't that seem to favor incumbents such as OATI? How would a new CA demonstrate this via previous audits?

 

Isn't it far better for OATI to use that time to establish a solution that segments out those PKIs as appropriate, to separate those of the Web PKI from those aforementioned other standards?

 

On Mon, May 14, 2018 at 10:26 PM, Patrick Tronnier via Public <public at cabforum.org <mailto:public at cabforum.org> > wrote:

Hi Tim,

 

OATI operates in an industry where the changes proposed to Section 2g iv. (If passwords are required to be changed periodically, that period SHOULD be at least two years.  Effective April 1, 2020, if passwords are required to be changed periodically, that period SHALL be at least two years.) conflict with multiple industry standards (i.e. NERC CIP, NAESB WEQ-12, FedRAMP, etc.).

 

To avoid this auditing nightmare would you consider a slight change in the wording of Ballot 221? 

 

Perhaps “If passwords are required to be changed periodically, that period SHOULD be at least two years.  Effective April 1, 2020, if passwords are required to be changed periodically, that period SHALL be at least two years unless previous audits prove conflict with other password standards."

 

Thanks

 

With kind regards,

 

Patrick Tronnier

Principal Security Architect &

Sr. Director of Quality Assurance & Customer Support

Phone: 763.201.2000 

Direct Line: 763.201.2052

Open Access Technology International, Inc. 

3660 Technology Drive NE, Minneapolis, MN <https://maps.google.com/?q=3660+Technology+Drive+NE,+Minneapolis,+MN&entry=gmail&source=g>  

 

CONFIDENTIAL INFORMATION: This email and any attachment(s) contain confidential and/or proprietary information of Open Access Technology International, Inc. Do not copy or distribute without the prior written consent of OATI. If you are not a named recipient to the message, please notify the sender immediately and do not retain the message in any form, printed or electronic.

 

From: Public [mailto:public-bounces at cabforum.org <mailto:public-bounces at cabforum.org> ] On Behalf Of Tim Hollebeek via Public
Sent: Monday, May 14, 2018 7:32 AM
To: Tim Hollebeek <tim.hollebeek at digicert.com <mailto:tim.hollebeek at digicert.com> >; CA/Browser Forum Public Discussion List <public at cabforum.org <mailto:public at cabforum.org> >
Subject: Re: [cabfpub] Ballot 221 v3: Two-Factor Authentication and Password Improvements

 

Ok, the person I was waiting for had no comments.  I will probably start the voting period

tomorrow.

 

From: Public [mailto:public-bounces at cabforum.org] On Behalf Of Tim Hollebeek via Public
Sent: Friday, May 4, 2018 3:49 PM
To: CA/Browser Forum Public Discussion List <public at cabforum.org <mailto:public at cabforum.org> >
Subject: [cabfpub] Ballot 221 v3: Two-Factor Authentication and Password Improvements

 

Unchanged from v2.  Refreshing time period so it doesn’t expire while I’m on PTO.

 

Still waiting for comments from one person.  Any other comments also welcome.

 

-Tim

 

Ballot 221: Two-Factor Authentication and Password Improvements

 

Purpose of Ballot: The Network Security Working Group met a number of times to 

improve the Network Security Guidelines requirements around authentication,

specifically by requiring two-factor authentication, and improving the password 

requirements in line with more recent NIST guidelines.

 

While CAs are encouraged to improve their password requirements as soon as 

possible, a two year grace period is being given to allow organizations to 

develop and implement policies to implement the improved requirements, especially

since some organizations may have to simultaneously comply with other

compliance frameworks that have not been updated yet and are based on older NIST 

guidance about passwords.

 

The following motion has been proposed by Tim Hollebeek of DigiCert and endorsed 

by Dimitris Zacharopoulos of Harica and Neil Dunbar of TrustCor.

 

— MOTION BEGINS –

 

This ballot modifies the “Network and Certificate System Security Requirements” 

as follows, based upon Version 1.1:

 

In the definitions, add a definition for Multi-Factor Authentication:

 

"Multi-Factor Authentication: An authentication mechanism consisting of two or 

more of the following independent categories of credentials (i.e. factors) to 

verify the user’s identity for a login or other transaction: something you know 

(knowledge factor), something you have (possession factor), and something you 

are (inherence factor).  Each factor must be independent.  Certificate-based 

authentication can be used as part of Multifactor Authentication only if the 

private key is stored in a Secure Key Storage Device."

 

Capitalize all instances of the defined term "Multi-Factor Authentication".

 

Add a definition for Secure Key Storage Device:

 

"Secure Key Storage Device: A device certified as meeting at least FIPS 140-2

level 2 overall, level 3 physical, or Common Criteria (EAL 4+)."

 

In section 1.j., capitalize Multi-Factor Authentication, and strike the 

parenthetical reference to subsection 2.n.(ii).

 

In section 2.f., add "(for accountability purposes, group accounts or shared

role credentials SHALL NOT be used)" after "authenticate to Certificate Systems".

 

Change section 2.g. to read:

 

"g. If an authentication control used by a Trusted Role is a username and password, 

    then, where technically feasible, implement the following controls:

  i.           For accounts that are accessible only within Secure Zones or High Security 

               Zones, require that passwords have at least twelve (12) characters; 

  ii.          For authentications which cross a zone boundary into a Secure Zone or High 

               Security Zone, require Multi-Factor Authentication.  For accounts accessible 

               from outside a Secure Zone or High Security Zone require passwords that have 

               at least eight (8) characters and are not be one of the user's previous 

               four (4) passwords; and implement account lockout for failed access attempts 

               in accordance with subsection k;

  iii.        When developing password policies, CAs SHOULD take into account the password 

               guidance in NIST 800-63B Appendix A.

  iv.         If passwords are required to be changed periodically, that period SHOULD be 

               at least two years.  Effective April 1, 2020, if passwords are required to 

               be changed periodically, that period SHALL be at least two years."

 

In section 2.h., change "Require" to "Have a policy that requires"

 

In section 2.i., change "Configure" to "Have a procedure to configure"

 

Change section 2.k. to read:

 

"k. Lockout account access to Certificate Systems after no more than five (5) failed 

    access attempts, provided that this security measure:

  i.           is supported by the Certificate System,

  ii.          Cannot be leveraged for a denial of service attack, and

  iii.        does not weaken the security of this authentication control;"

 

Change section 2.n. to read:

 

"Enforce Multi-Factor Authentication for all Trusted Role accounts on Certificate

Systems (including those approving the issuance of a Certificate, which equally

applies to Delegated Third Parties) that are accessible from outside a Secure Zone

or High Security Zone; and"

 

— MOTION ENDS –

 

The procedure for approval of this ballot is as follows:

 

Discussion (7+ days)

 

Start Time: 2018-03-28  15:00:00 EDT

 

End Time: after 2018-05-11 15:00:00 EDT

 

Vote for approval (7 days)

 

Start Time: TBD

 

End Time: TBD

 

From: Public [mailto:public-bounces at cabforum.org] On Behalf Of Tim Hollebeek via Public
Sent: Wednesday, March 28, 2018 12:26 PM
To: CA/Browser Forum Public Discussion List <public at cabforum.org <mailto:public at cabforum.org> >
Subject: [cabfpub] Ballot 221: Two-Factor Authentication and Password Improvements

 

 

Ballot 221: Two-Factor Authentication and Password Improvements

 

Purpose of Ballot: The Network Security Working Group met a number of times to 

improve the Network Security Guidelines requirements around authentication,

specifically by requiring two-factor authentication, and improving the password 

requirements in line with more recent NIST guidelines.

 

While CAs are encouraged to improve their password requirements as soon as 

possible, a two year grace period is being given to allow organizations to 

develop and implement policies to implement the improved requirements, especially

since some organizations may have to simultaneously comply with other

compliance frameworks that have not been updated yet and are based on older NIST 

guidance about passwords.

 

The following motion has been proposed by Tim Hollebeek of DigiCert and endorsed 

by Dimitris Zacharopoulos of Harica and Neil Dunbar of TrustCor.

 

— MOTION BEGINS –

 

This ballot modifies the “Network and Certificate System Security Requirements” 

as follows, based upon Version 1.1:

 

In the definitions, add a definition for Multifactor Authentication:

 

"Multi-Factor Authentication: An authentication mechanism consisting of two or 

more of the following independent categories of credentials (i.e. factors) to 

verify the user’s identity for a login or other transaction: something you know 

(knowledge factor), something you have (possession factor), and something you 

are (inherence factor).  Each factor must be independent.  Certificate-based 

authentication can be used as part of Multifactor Authentication only if the 

private key is stored in a Secure Key Storage Device."

 

Add a definition for Secure Key Storage Device:

 

"Secure Key Storage Device: A device certified as meeting at least FIPS 140-2

level 2 overall, level 3 physical, or Common Criteria (EAL 4+)."

 

In section 1.j., capitalize Multi-Factor Authentication, and strike the 

parenthetical reference to subsection 2.n.(ii).

 

In section 2.f., add "(for accountability purposes, group accounts or shared

role credentials SHALL NOT be used)" after "authenticate to Certificate Systems".

 

Change section 2.g. to read:

 

"g. If an authentication control used by a Trusted Role is a username and password, 

    then, where technically feasible, implement the following controls:

  i.           For accounts that are accessible only within Secure Zones or High Security 

               Zones, require that passwords have at least twelve (12) characters; 

  ii.          For accounts that are accessible from outside a Secure Zone or High Security 

               Zone, require Multi-Factor Authentication, with passwords that have at least 

               eight (8) characters and are not be one of the user's previous four (4) 

               passwords; and implement account lockout for failed access attempts in 

               accordance with subsection k;

  iii.        When developing password policies, CAs SHOULD take into account the password 

               guidance in NIST 800-63B Appendix A.

  iv.         If passwords are required to be changed periodically, that period SHOULD be 

               at least two years.  Effective April 1, 2020, if passwords are required to 

               be changed periodically, that period SHALL be at least two years."

 

In section 2.h., change "Require" to "Have a policy that requires"

 

In section 2.i., change "Configure" to "Have a procedure to configure"

 

Change section 2.k. to read:

 

"k. Lockout account access to Certificate Systems after no more than five (5) failed access attempts, provided that this security measure:

  i.           is supported by the Certificate System,

  ii.          Cannot be leveraged for a denial of service attack, and

  iii.        does not weaken the security of this authentication control;"

 

Change section 2.n. to read:

 

"Enforce Multi-Factor Authentication for all Trusted Role accounts on Certificate

Systems (including those approving the issuance of a Certificate, which equally

applies to Delegated Third Parties) that are accessible from outside a Secure Zone

or High Security Zone; and”

 

— MOTION ENDS –

 

The procedure for approval of this ballot is as follows:

 

Discussion (7+ days)

 

Start Time: 2018-03-28  15:30:00 EDT

 

End Time: after 2018-04-04 15:30:00 EDT

 

Vote for approval (7 days)

 

Start Time: TBD

 

End Time: TBD

 


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