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POODLE TLS - The POODLE Strikes Back - change your settings now....
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Darren Duke    

After a brief chat in the Lotus Notes Skype chat with Jim Casle, Declan Lynch, Steve Pridemore and Frederick Norling it has become apparent that Domino maybe susceptible to the newly discovered POODLE TLS issue (POODLE 2.0 if you will). You can read about the new issues here and here.

Go scan your servers at SSL Labs.

Anyway, provided you are using 9.0.1 FP IF1 (the TLS fix that IBM provided a while back) the apparent Domino fix is to disable AES and 3DES ciphers and run with only RC4:

Image:POODLE TLS - The POODLE Strikes Back - change your settings now....

With those changes you go from an "F" to a "B" on SSL Labs. Here is the server with AES and/or 3DES enabled:

Image:POODLE TLS - The POODLE Strikes Back - change your settings now....

Here is a Domino server with just RC4 enabled:

Image:POODLE TLS - The POODLE Strikes Back - change your settings now....

Oh, and F5's are also at risk.....

If you're on anything less than 9 then you don't get TLS so you're not affected by this.....oh, the irony. Still it would be very beneficial to IBM's public perception to get TLS 1.2 and better ciphers into Domino ASAP. Fixing this stuff once a decade is not cutting it. As you can see above RC4 is not to hot these days.

As Adam Langley puts it:

This seems like a good moment to reiterate that everything less than TLS 1.2 with an AEAD cipher suite is cryptographically broken


So, IBM, the ball is in your court again.......

I will be updating my free proxy soon, but that is not affected by this issue, it still gets a "B".

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http://blog.darrenduke.net/Darren/DDBZ.nsf/dx/poodle-tls-the-poodle-strikes-back.htm
Dec 09, 2014
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Recent Blog Posts
11
Quickr Fix for Chrome 60+
Fri, Aug 25th 2017 8:53p   Darren Duke
Yeah, Quickr right? Long time since I've posted about Quickr. Still a great (if somewhat complicated and unsupported) product, Still being used by me and several clients despite IBM having several products claiming to replace it.. Despite IBM ceasing support many moons ago it chugged along very nicely so long as a reverse proxy is in front of it to allow TLS 1.2 and SHA2. Except Chrome 60 broke it. Google (and Safari before it) changed the way XHR works and basically buggered Quickr in the pro
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MWLUG 2017 presentation - Notes, Domino and the single sign on soup
Thu, Aug 10th 2017 7:44p   Darren Duke
As promised, here is the presentation from my MWLUG 2017 session on SSO. If you need (for hire) help with any of this see the STS contact page.
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Wed, Aug 2nd 2017 10:56a   Darren Duke
After almost a year of using Let's Encrypt to secure this very site, I'm still running into issues automatically renewing the certificates every 90 days. In my last post about this I'd documented the procedure I was using but was unable to ever get it to work successfully via cron (it was fine manually). I've now switched to a different auto-renew method....Enter: certbot This seems much simpler, tidier solution. The only snag for me was it required Python 2.7 to be installed. I sent a
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Domino NIFNSF update - you probably don’t want to enable it
Fri, Mar 31st 2017 2:33p   Darren Duke
In my last post about NIFNSF, Christian Hensler left this comment: I couldn't find anything on the internet, so off I went to the Design Partner forum. Now this is a NDA'd so I'm maybe skirting the rules here, but there is indeed an IBM reproduced issue with performance with NIFNSF. So this AM I did some testing and I was able to reproduce the issue. Base on my testing, on average, the current NIFNSF implementation is twice as slow as non-NIFNSF databases. So you many not want to impl
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Moving Domino NIF indexes out of the NSF
Wed, Mar 29th 2017 4:16p   Darren Duke
New in Fix Pack Feature Pack 8 is the ability to move the view index files out of the NSF. NIF is the technical term for these index files and end with the file suffix of NDX. Doing this has several advantages including: Make the NSF smaller, so better backup times Help get more out of the 64GB limit....if 6GB of your NSF is NIF index, that's a logt of space Move NIF's to better performing storage, for example SSD's Allows concurrent access to to databases and views, so theoretically better
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Renewing LetsEncrypt SSL certificates automatically with NginX
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