safe renegotiation

Simon Josefsson simon at
Sat May 22 17:52:05 CEST 2010

Nikos Mavrogiannopoulos <nmav at> writes:

> Simon Josefsson wrote:
>>> If people notice that no clients can connect on their servers will
>>> either install an older version of gnutls that "works" or just go to
>>> mod_ssl. Moreover it is problematic in the sense that an administrator
>>> might not detect at all that his site is inaccessible and only find
>>> out after losing customers or so. I think that fixing a security issue
>>> but as a side-effect causing serious issues in interoperability with
>>> old software is a recipe for people to move out of your software
>>> (intel never managed to get rid of x86, and I don't think we can
>>> afford it).
>>> Let's be conservative and wait. This issue proved not to be that
>>> important in the internet (not many people upgraded because of this).
>> According to Tomas, OpenSSL protect against this.  If that is the case,
>> I think the answer is simple: we should do the same.
> I've commited a patch that does that in git.

Thanks!  I think this solves the main remaining concern with the safe
renegotiation stuff before a release...  however documentation and self
tests still needs to be written, I'll try to work on this now.


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