Some of these certs are really old.  Is there a reason people were using double 
dot names? Are they all mistakes in the certificate request or is there some 
logic behind them?

-----Original Message-----
From: dev-security-policy 
[mailto:dev-security-policy-bounces+jeremy.rowley=digicert....@lists.mozilla.org]
 On Behalf Of Tom via dev-security-policy
Sent: Tuesday, July 18, 2017 12:17 PM
To: Hanno Böck <ha...@hboeck.de>; mozilla-dev-security-pol...@lists.mozilla.org
Subject: Re: Certificate with invalid dnsName issued from Baltimore intermediate


The "www..*" search is also intersting, I think:
https://crt.sh/?dNSName=www..%25

crt.sh ID        Logged At  ⇧   Not Before      Identity        Issuer Name
39744873        2016-10-02      2012-12-29      www..coinfling.com      
38647998        2016-10-01      2011-03-24      www..altmangroup.com    
37532439        2016-10-01      2014-05-02      www..edm.me     
35234108        2016-09-26      2013-12-09      www..erhgroup.com.tw    
33710552        2016-09-22      2009-08-04 www..webmail.collegeofidaho.edu
33278853        2016-09-20      2013-03-26      www..labpro2000.com     
32918004        2016-09-19      2013-04-30      www..getswapapp.com     
22835635        2016-06-22      2016-06-20      www..tapspace.org       
9999623 2015-10-07      2015-09-23      www..imypaths.com       
8584525 2015-07-24      2015-07-22      www..myacademicprogram.in       
8431374 2015-07-13      2015-07-06      www..marza.com.br       
8216255 2015-06-28      2015-06-25      www..mysummitortho.com  
4327936 2014-06-14      2014-06-12      www..mysummitortho.com  
4303228 2014-06-10      2008-12-03      www..wildlifelicense.com
3956875 2014-04-25      2014-04-23      www..mysummitortho.com  
2728659 2013-09-28      2013-09-25      www..marza.com.br       
637932  2013-03-26      2012-10-21      www..guidedstudies.com  
85797   2013-03-26      2012-07-01      www..mysummitortho.com  


Le 18/07/2017 à 17:57, Hanno Böck a écrit :
> More dotdot-certificates:
> 
> https://crt.sh/?id=34528113
> for autodiscover.amphenolcanada..com
> Expired 2012
> issued by Geotrust (aka symantec)
> 
> https://crt.sh/?id=3478078
> for PDC-LIB-WEB1.RBI1.rbi..in
> Expired 2016
> issued by Institute for Development and Research in Banking Technology
> 
> https://crt.sh/?id=4112846
> pkictslvws.dmdc.osd..mil
> expired 2016
> issued by U.S. Government
> 
> So all expired, but certainly at least the ones from 2016 are 
> worrying, indicating that the issuing CAs are failing at domain validation.
> 
> (Due to limitations in the search methodology - scraping crt.sh search 
> results and looping through tlds - I only searched for ..tld. It would 
> certainly be valuable to search further.)
> 

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