[Pkg-openssl-devel] Bug#792490: openssl s_client doesn't allow for certificate pinning anymore!

Ben Hutchings ben at decadent.org.uk
Mon Sep 7 12:00:20 UTC 2015


Control: severity -1 important
Control: tag -1 - security

On Wed, 15 Jul 2015 12:52:24 +0200 Florent Daigniere <
nextgens at freenetproject.org> wrote:
> Package: openssl
> Version: 1.0.2d-1
> Severity: grave
> Tags: security
> Justification: user security hole
> 
> Dear Maintainer,
> 
> It looks like openssl s_client is not providing any way to disregard
the system's trusted CAs anymore... and this is a regression from
Jessie.
[...]

openssl s_client doesn't check the certificate's names either, and
never has.  It should only be used for debugging, not to make a secure
tunnel.  For secure tunnelling see the example in
<https://www.decadent.org.uk/ben/blog/securing-git-imap-send-in-debian.html>

Ben.

-- 
Ben Hutchings
Kids!  Bringing about Armageddon can be dangerous.  Do not attempt it in
your own home. - Terry Pratchett and Neil Gaiman, `Good Omens'

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