[Pkg-openssl-devel] Bug#912864: Bug#912864: openssl: new version of openssl breaks some openvpn clients

Kurt Roeckx kurt at roeckx.be
Sun Nov 4 19:32:16 GMT 2018


On Sun, Nov 04, 2018 at 11:19:41AM -0800, James Bottomley wrote:
> On Sun, 2018-11-04 at 20:15 +0100, Kurt Roeckx wrote:
> > This is not at all how the version negiotation in TLS 1.2 and
> > below works. The client just indicates the highest version it
> > supports, so for instance TLS 1.2. It's then up to the server to
> > pick a version that the client supports, so one that is smaller than
> > TLS 1.2, and it might pick TLS 1.0 or 1.2. It will then send a server
> > hello with that version.
> 
> OK, so I'm weary of trying to construct a theory of what the bug
> actually is, why don't you try to come up with one.  The symptoms are
> that openvpn in openwrt works with server 1.1.0 and fails with server
> 1.1.1 if you don't specify tls-version-min 1.0 on the command line.

On which side do you use tls-version-min? Can you please give the
version of both openvpn and openssl on both sides.


Kurt



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