[Bug 1920640] Re: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <ubuntu-archive at lists.ubuntu.com>

[Rik Mills]

Tested in focal.

Before test with proposed keyring packages: 'apt update' failed with the
aforementioned error. dbgsym packages could not be installed from
ddebs.ubuntu.com

After upgrading to proposed keyring packages: 'apt update' succeeded. A
sampling of dbgsym packages could be installed from ddebs.ubuntu.com

** Tags removed: verification-needed-focal
** Tags added: verification-done-focal

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Title:
  EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic
  Signing Key (2016) <ubuntu-archive at lists.ubuntu.com>

Status in ubuntu-keyring package in Ubuntu:
  Fix Released
Status in ubuntu-keyring source package in Bionic:
  Fix Committed
Status in ubuntu-keyring source package in Focal:
  Fix Committed
Status in ubuntu-keyring source package in Groovy:
  Fix Committed
Status in ubuntu-keyring source package in Hirsute:
  Fix Released

Bug description:
  [Impact]

   * Cannot update apt metadata from ddebs.ubuntu.com whilst using
  ubuntu-dbgsym-keyring package

  [Test Plan]

   * Install ubuntu-dbgsym-keyring package
   * Add ddebs.ubuntu.com repository for your release
   * sudo apt update must be successful

  [Where problems could occur]

   * At the moment the signature was bumped by one year
   * Meaning this issue will occur again in 2022
   * Instead the key must be set to not expire & new round of SRUs issued

  [Other Info]
   
   * Original bug report

  The public key used by the debugging symbols repository
  /usr/share/keyrings/ubuntu-dbgsym-keyring.gpg from the package ubuntu-
  dbgsym-keyring expired.

  $ apt policy ubuntu-dbgsym-keyring
  ubuntu-dbgsym-keyring:
    Installed: 2020.02.11.2
    Candidate: 2020.02.11.2
    Version table:
   *** 2020.02.11.2 500
          500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages
          500 http://archive.ubuntu.com/ubuntu focal/main i386 Packages
          100 /var/lib/dpkg/status
  $ gpg --no-default-keyring --keyring /usr/share/keyrings/ubuntu-dbgsym-keyring.gpg --list-keys
  /usr/share/keyrings/ubuntu-dbgsym-keyring.gpg
  ---------------------------------------------
  pub   rsa4096 2016-03-21 [SC] [expired: 2021-03-20]
        F2EDC64DC5AEE1F6B9C621F0C8CAB6595FDFF622
  uid           [ expired] Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <ubuntu-archive at lists.ubuntu.com>

  Error message on "apt update":

  E: The repository 'http://ddebs.ubuntu.com bionic-updates Release' is not signed.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  W: GPG error: http://ddebs.ubuntu.com bionic Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <ubuntu-archive at lists.ubuntu.com>
  E: The repository 'http://ddebs.ubuntu.com bionic Release' is not signed.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  W: GPG error: http://ddebs.ubuntu.com bionic-proposed Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <ubuntu-archive at lists.ubuntu.com>
  E: The repository 'http://ddebs.ubuntu.com bionic-proposed Release' is not signed.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.

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