[Bug 1799345] Re: Sypheed not (or no longer) using SNI for SSL connections

[Łukasz Zemczak]

Hello Moses, or anyone else affected,

Accepted sylpheed into disco-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/sylpheed/3.5.1-1ubuntu3.19.04.1 in
a few hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-disco to verification-done-disco. If it does not fix
the bug for you, please add a comment stating that, and change the tag
to verification-failed-disco. In either case, without details of your
testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: sylpheed (Ubuntu Disco)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-disco

** Changed in: sylpheed (Ubuntu Bionic)
       Status: In Progress => Fix Committed

** Tags added: verification-needed-bionic

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https://bugs.launchpad.net/bugs/1799345

Title:
  Sypheed not (or no longer) using SNI for SSL connections

Status in sylpheed package in Ubuntu:
  Fix Released
Status in sylpheed source package in Bionic:
  Fix Committed
Status in sylpheed source package in Disco:
  Fix Committed
Status in sylpheed source package in Eoan:
  Fix Released
Status in sylpheed package in Debian:
  Fix Released

Bug description:
  [impact]

  IMAP connection to imap.gmail.com over SSL returns self-signed
  certificate. Though you can still connect to imap.gmail.com using this
  certificate, it would be better to fix it to avoid this scary warning
  (self-signed certificate) and provide a smoother user experience.

  [Test Case]
  Create IMAP account for gmail.com in sylpheed. To do this, select "Create new account" from the "Configuration" in the main menu. "New account setup" window will appear. Select "IMAP4 (Gmail)" and follow instructions in that window. After setup is finished check for new email for newly created account. You should get a warning complaining about self-signed certificate.
  With fixed package, try the same. This time you should not get the warning.

  [regression potential]

  low, as this only sets SNI, however any regression would likely result
  in SSL connection failures.

  [other info]

  for Bionic, this is almost certainly a regression caused by the
  openssl upgrade to 1.1.

  for Disco and Eoan, this functionality likely has never worked, as we
  haven't synced this package from Debian since Bionic.

  Debian does have this patch as noted in the Affects section.

  ---

  Original Description
  --------------------
  Problem appeared after upgrading from Ubuntu 18.04 to 18.10.
  When starting Sylpheed, connecting to imap.gmail.com over SSL, I get a warning embedded in the SSL certificate:  "Subject: /OU=No SNI provided; please fix your client./CN=invalid2.invalid "

  May be related to this bug report about 'fetchmail' in redhat enterprise when it was still using TLSv1.2 instead of TLSv1.3:
  https://bugzilla.redhat.com/show_bug.cgi?id=1611815
  https://gitlab.com/fetchmail/fetchmail/commit/9b8b634312f169fab872f3580c2febe5af031615

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: sylpheed 3.5.1-1ubuntu3
  ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
  Uname: Linux 4.18.0-10-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.10-0ubuntu13
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Tue Oct 23 00:27:01 2018
  InstallationDate: Installed on 2016-06-05 (869 days ago)
  InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  SourcePackage: sylpheed
  UpgradeStatus: Upgraded to cosmic on 2018-10-21 (1 days ago)
  modified.conffile..etc.default.apport: [modified]
  mtime.conffile..etc.default.apport: 2018-03-20T22:16:27.108498

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