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From Mark Thomas <>
Subject SSL & Tomcat
Date Sat, 07 Nov 2009 16:59:34 GMT

I was thinking about this on my way back from ApacheCon and we probably
need to get some advice out to users early next week.

My current understanding is that the MITM attack is triggered by a

On this basis I suggest something along the following lines:

SSL using JSSE (BIO and NIO connectors)
- Don't use SSL configs that require renegotiation. i.e. SSL config
should be the same for the entire host. Sites that require SSL in some
places and SSL + CLIENT-CERT in others will require reconfiguration.
Sites that require SSL for some parts should be OK.
- Keep watch for a Sun update to the JDK that may help address the issue

SSL using tc Native
- tcnative does not support renegotiation
( so for now
users of tc native with SSL should be OK

We also need to think about what to do with tc native. Maybe something like:
- release 1.1.17 with binaries built with 0.9.8l (so renegotiation is
- keep an eye on httpd and if they find a work-around, copy it and
release 1.1.18 with renegotiation enabled

For now, I'm not proposing any changes to the docs although we may want
to put a summary of the advice - once agreed - on the security pages.



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