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

[Daniel Llewellyn]

Public bug reported:

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

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: Unknown

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


** Tags: amd64 apport-bug bionic eoan uec-images

** Bug watch added: gitlab.com/gnutls/gnutls/issues #841
   https://gitlab.com/gnutls/gnutls/issues/841

** Also affects: gnutls via
   https://gitlab.com/gnutls/gnutls/issues/841
   Importance: Unknown
       Status: Unknown

** Description changed:

- Known upstream bug. There is an issue with session ticket handling in
- GnuTLS during session resumption.
+ 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
  
  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
+  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)

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https://bugs.launchpad.net/bugs/1873565

Title:
  issue with TLS 1.2 session ticket handling as client during resumption

Status in Gnutls:
  Unknown
Status in gnutls28 package in Ubuntu:
  New

Bug description:
  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

  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)

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