[Bug 1873565] [NEW] issue with TLS 1.2 session ticket handling as client during resumption

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Sebastien Bacher (seb128):

Known upstream bug, that has been fixed upstream. There is an issue with
session ticket handling in GnuTLS during session resumption.

The issue is intermittent, but can eventually be reproduced by running:

gnutls-cli --resume api.twitter.com 443

When you trigger the bug the output will finish with the following two
lines:

*** Fatal error: An unexpected TLS packet was received.
*** handshake has failed: An unexpected TLS packet was received.

This is breaking the Cawbird Snap package based on Bionic/Core18.

The issue affects both Bionic and Eoan.

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: gnutls-bin 3.6.9-5ubuntu1.1
ProcVersionSignature: User Name 5.3.0-46.38-generic 5.3.18
Uname: Linux 5.3.0-46-generic x86_64
ApportVersion: 2.20.11-0ubuntu8.8
Architecture: amd64
Date: Sat Apr 18 15:05:04 2020
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: gnutls28
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnutls
     Importance: Unknown
         Status: Fix Released

** Affects: gnutls28 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic eoan patch rls-ee-incoming uec-images
-- 
issue with TLS 1.2 session ticket handling as client during resumption
https://bugs.launchpad.net/bugs/1873565
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