** Changed in: openssl (Ubuntu)
Assignee: (unassigned) => Steve Langasek (vorlon)
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to openssl in Ubuntu.
https://bugs.launchpad.net/bugs/1797386
Title:
[SRU] OpenSSL 1.1.1 to 18.04 LTS
Status in openssl package in Ubuntu:
In Progress
Status in libio-socket-ssl-perl source package in Bionic:
New
Status in libnet-ssleay-perl source package in Bionic:
New
Status in nova source package in Bionic:
New
Status in openssl source package in Bionic:
Confirmed
Status in python-cryptography source package in Bionic:
New
Status in python2.7 source package in Bionic:
New
Status in python3.6 source package in Bionic:
New
Status in python3.7 source package in Bionic:
New
Status in r-cran-openssl source package in Bionic:
Fix Committed
Status in ruby-openssl source package in Bionic:
Fix Committed
Status in ruby2.5 source package in Bionic:
New
Bug description:
[Impact]
* OpenSSL 1.1.1 is an LTS release upstream, which will continue to
receive security support for much longer than 1.1.0 series will.
* OpenSSL 1.1.1 comes with support for TLS v1.3 which is expected to
be rapidly adopted due to increased set of supported hashes & algoes,
as well as improved handshake [re-]negotiation.
* OpenSSL 1.1.1 comes with improved hw-acceleration capabilities.
* OpenSSL 1.1.1 is ABI/API compatible with 1.1.0, however some
software is sensitive to the negotiation handshake and may either need
patches/improvements or clamp-down to maximum v1.2.
[Test Case]
* Rebuild all reverse dependencies
* Execute autopkg tests for all of them
* Clamp down to TLS v1.2 software that does not support TLS v1.3
(e.g. mongodb)
* Backport TLS v1.3 support patches, where applicable
[Regression Potential]
* Connectivity interop is the biggest issues which will be
unavoidable with introducing TLS v1.3. However, tests on cosmic
demonstrate that curl/nginx/google-chrome/mozilla-firefox connect and
negotiate TLS v1.3 without issues.
* Mitigation of discovered connectivity issues will be possible by
clamping down to TLS v1.2 in either server-side or client-side
software or by backporting relevant support fixes
* Notable changes are listed here
https://wiki.openssl.org/index.php/TLS1.3
* Most common connectivity issues so far:
- client verifies SNI in TLSv1.3 mode, yet client doesn't set hostname.
Solution is client change to set hostname, or to clamp down the client to
TLSv1.2.
- session negotiation is different in TLSv1.3, existing client code
may fail to create/negotiate/resume session. Clients need to learn how
to use session callback.
* This update bundles python 3.6 and 3.7 point releases
* Following the change in Cosmic and up, this SRU also includes a
distro patch that lowers OPENSSL_TLS_SECURITY_LEVEL from 1 to 0, to
allow for establishing client->server server->client connections with
lower grade security settings (e.g. sub-80bits keys, MD5/SHA1
certificate checksums, and other crap like that). This is to continue
allow bionic clients to connect to servers operating with older 1.0.x
based openssl, as typically clients are at no mercy to reject servers
that do not have any better certs/keys/signatures. Thus potentially
weak-security connections that previously would fail to establish
to/from bionic, may now be accepted. Some may view this as a
regression. In that case adjust openssl.cnf to a higher
TLS_SECURITY_LEVEL, or use the openssl ctx APIs to set a higher TLS
security level. See further comments in this bug report as to when we
will be raising this LEVEL up (currently timeline is to raise to 2, in
20.04 LTS).
[Other Info]
* Previous FFe for OpenSSL in 18.10 is at
https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1793092
* TLS v1.3 support in NSS is expected to make it to 18.04 via
security updates
* TLS v1.3 support in GnuTLS is expected to be available in 19.04
* Test OpenSSL is being prepared in
https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/3473
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1797386/+subscriptions
--
Mailing list: https://launchpad.net/~touch-packages
Post to : touch-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~touch-packages
More help : https://help.launchpad.net/ListHelp
