This is correct and intended behavior I believe. By default, packages archives shipped on the ISO images are signed with the cdimage key, and are trusted.
This means one can perform [dist-]upgrades from installation ISOs (note these are no longer produced by default). And enabled one to install packages from the ISOs (e.g. install updated openssl on a 14.04.0 host from the 14.04.1 server iso; another example install optional drivers off the desktop iso). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to ubuntu-keyring in Ubuntu. https://bugs.launchpad.net/bugs/1363480 Title: ubuntu-keyring imports the Ubuntu CD Signing Key as a key trusted by apt Status in ubuntu-keyring package in Ubuntu: New Bug description: Please take this with a grain of salt as I'm not reporting it with a clean trusty install at my fingertips. ubuntu-keyring ships a /usr/share/keyrings/ubuntu-archive-keyring.gpg file that contains the Ubuntu CD Signing Keys (old and new): % gpg /usr/share/keyrings/ubuntu-archive-keyring.gpg pub 1024D/437D05B5 2004-09-12 Ubuntu Archive Automatic Signing Key <[email protected]> sub 2048g/79164387 2004-09-12 pub 1024D/FBB75451 2004-12-30 Ubuntu CD Image Automatic Signing Key <[email protected]> pub 4096R/C0B21F32 2012-05-11 Ubuntu Archive Automatic Signing Key (2012) <[email protected]> pub 4096R/EFE21092 2012-05-11 Ubuntu CD Image Automatic Signing Key (2012) <[email protected]> They end up being trusted by apt because the keyring is taken as the initial trusted key set in /etc/apt/trusted.gpg. This is most likely not what we want. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-keyring/+bug/1363480/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
