Hello All,
I am not entirely sure if this is right place to ask, but I thought I
would start here.
We have a client who has several dozen remote locations all connected
to the head office via OpenVPN tunnels. OpenVPN is form the Debian
packages.
The version of OpenSSL on the head office firewall running the OpenVPN
server is a non-vulnerable version (it runs Debian 6.0.2, which has
OpenSSL 0.9.8 installed). However, the remote locations are mix of
Debian 6 and Debian 7 installations (the Debian 6 would not have a
vulnerable version of OpenSSL, while the Debian 7 ones would, and can
be "patched" by running 'apt-get update && apt-get upgrade' to install
a patched version of OpenSSL)
My question sis this, really: while it is understood that the systems
running the vulnerable versions of OpenSSL should be updated (and in
fact are in process of doing just that), is there really any immediate
danger of information being leaked from those tunnels?
The certificate were all generated on the head office firewall running
the OpenVPN server, and all the clients are making their connections
to that non-vulnerable server (as far as Heartbleed goes, anyway), so
are the tunnels themselves in fact in any danger of compromisation,
even if the "clients" are running a vulnerable version of OpenSSL?
I guess I am wondering if *all* those SSL tickets need to be revoked
and re-generated (I know it is likely best-practice to do so, but is
it likely necessary? It should likely be done anyway, but is there
any immediacy about it that has to be done?)
Thanks for your input.
A.
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