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Message #35660
[Bug 1881278] [NEW] Ship 2018 Archive key in xenial's ubuntu-keyring
Public bug reported:
[Impact]
* Xenial systems will not be able to debootstrap Groovy archives when
it finally switches to be signed by single 2018 key. To have support for
xenial to operate against Groovy+ archives it needs access to 2018
archive key. Ship it.
[Test Case]
* Start xenial chroot or lxd container.
* Observe that 4 keys are trusted - the original 2004 archive & cdimage, 2012 archive & cdimage
# apt-key list --fingerprint
/etc/apt/trusted.gpg
--------------------
pub 1024D/437D05B5 2004-09-12
Key fingerprint = 6302 39CC 130E 1A7F D81A 27B1 4097 6EAF 437D 05B5
uid Ubuntu Archive Automatic Signing Key <ftpmaster@xxxxxxxxxx>
sub 2048g/79164387 2004-09-12
pub 4096R/C0B21F32 2012-05-11
Key fingerprint = 790B C727 7767 219C 42C8 6F93 3B4F E6AC C0B2 1F32
uid Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@xxxxxxxxxx>
pub 4096R/EFE21092 2012-05-11
Key fingerprint = 8439 38DF 228D 22F7 B374 2BC0 D94A A3F0 EFE2 1092
uid Ubuntu CD Image Automatic Signing Key (2012) <cdimage@xxxxxxxxxx>
pub 1024D/FBB75451 2004-12-30
Key fingerprint = C598 6B4F 1257 FFA8 6632 CBA7 4618 1433 FBB7 5451
uid Ubuntu CD Image Automatic Signing Key <cdimage@xxxxxxxxxx>
* Install the new ubuntu-keyring package
* Observe that 5 keys are now trusted, including the 2018 archive key
# apt-key list --fingerprint
/etc/apt/trusted.gpg
--------------------
pub 1024D/437D05B5 2004-09-12
Key fingerprint = 6302 39CC 130E 1A7F D81A 27B1 4097 6EAF 437D 05B5
uid Ubuntu Archive Automatic Signing Key <ftpmaster@xxxxxxxxxx>
sub 2048g/79164387 2004-09-12
pub 4096R/C0B21F32 2012-05-11
Key fingerprint = 790B C727 7767 219C 42C8 6F93 3B4F E6AC C0B2 1F32
uid Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@xxxxxxxxxx>
pub 4096R/EFE21092 2012-05-11
Key fingerprint = 8439 38DF 228D 22F7 B374 2BC0 D94A A3F0 EFE2 1092
uid Ubuntu CD Image Automatic Signing Key (2012) <cdimage@xxxxxxxxxx>
pub 1024D/FBB75451 2004-12-30
Key fingerprint = C598 6B4F 1257 FFA8 6632 CBA7 4618 1433 FBB7 5451
uid Ubuntu CD Image Automatic Signing Key <cdimage@xxxxxxxxxx>
pub 4096R/991BC93C 2018-09-17
Key fingerprint = F6EC B376 2474 EDA9 D21B 7022 8719 20D1 991B C93C
uid Ubuntu Archive Automatic Signing Key (2018) <ftpmaster@xxxxxxxxxx>
* Dist upgrade to bionic
* Observe that only 3 keys are trusted the 2012 cdimage&archive + 2018 key, and that none of them are in /etc/apt/trusted.gpg but are key snippets in /etc/apt/trusted.gpg.d/
# apt-key list
/etc/apt/trusted.gpg.d/ubuntu-keyring-2012-archive.gpg
------------------------------------------------------
pub rsa4096 2012-05-11 [SC]
790B C727 7767 219C 42C8 6F93 3B4F E6AC C0B2 1F32
uid [ unknown] Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@xxxxxxxxxx>
/etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg
------------------------------------------------------
pub rsa4096 2012-05-11 [SC]
8439 38DF 228D 22F7 B374 2BC0 D94A A3F0 EFE2 1092
uid [ unknown] Ubuntu CD Image Automatic Signing Key (2012) <cdimage@xxxxxxxxxx>
/etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg
------------------------------------------------------
pub rsa4096 2018-09-17 [SC]
F6EC B376 2474 EDA9 D21B 7022 8719 20D1 991B C93C
uid [ unknown] Ubuntu Archive Automatic Signing Key (2018) <ftpmaster@xxxxxxxxxx>
[Regression Potential]
* Adding additional new trust key can trigger support request (aka why
are you adding this key on xenial). The reason to add this key on
xenial, is for xenial to allow securely debootstrap and operate on
Groovy+ repositories which are about to drop 2012 key signatures.
[Other Info]
* Bionic switched from shipping keys in /etc/apt/trusted.gpg keyring, to individual snippets. Thus xenial's upload that adds the future key to /etc/apt/trusted.gpg should also remove it, during upgrade to bionic. To ensure that the systems upgraded from xenial to bionic, look the same as those that are fresh bionic installations.
** Affects: ubuntu-keyring (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: ubuntu-keyring (Ubuntu Xenial)
Importance: Undecided
Status: Triaged
** Also affects: ubuntu-keyring (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: ubuntu-keyring (Ubuntu)
Status: New => Invalid
** Changed in: ubuntu-keyring (Ubuntu Xenial)
Status: New => Triaged
--
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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1881278
Title:
Ship 2018 Archive key in xenial's ubuntu-keyring
Status in ubuntu-keyring package in Ubuntu:
Invalid
Status in ubuntu-keyring source package in Xenial:
Triaged
Bug description:
[Impact]
* Xenial systems will not be able to debootstrap Groovy archives when
it finally switches to be signed by single 2018 key. To have support
for xenial to operate against Groovy+ archives it needs access to 2018
archive key. Ship it.
[Test Case]
* Start xenial chroot or lxd container.
* Observe that 4 keys are trusted - the original 2004 archive & cdimage, 2012 archive & cdimage
# apt-key list --fingerprint
/etc/apt/trusted.gpg
--------------------
pub 1024D/437D05B5 2004-09-12
Key fingerprint = 6302 39CC 130E 1A7F D81A 27B1 4097 6EAF 437D 05B5
uid Ubuntu Archive Automatic Signing Key <ftpmaster@xxxxxxxxxx>
sub 2048g/79164387 2004-09-12
pub 4096R/C0B21F32 2012-05-11
Key fingerprint = 790B C727 7767 219C 42C8 6F93 3B4F E6AC C0B2 1F32
uid Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@xxxxxxxxxx>
pub 4096R/EFE21092 2012-05-11
Key fingerprint = 8439 38DF 228D 22F7 B374 2BC0 D94A A3F0 EFE2 1092
uid Ubuntu CD Image Automatic Signing Key (2012) <cdimage@xxxxxxxxxx>
pub 1024D/FBB75451 2004-12-30
Key fingerprint = C598 6B4F 1257 FFA8 6632 CBA7 4618 1433 FBB7 5451
uid Ubuntu CD Image Automatic Signing Key <cdimage@xxxxxxxxxx>
* Install the new ubuntu-keyring package
* Observe that 5 keys are now trusted, including the 2018 archive key
# apt-key list --fingerprint
/etc/apt/trusted.gpg
--------------------
pub 1024D/437D05B5 2004-09-12
Key fingerprint = 6302 39CC 130E 1A7F D81A 27B1 4097 6EAF 437D 05B5
uid Ubuntu Archive Automatic Signing Key <ftpmaster@xxxxxxxxxx>
sub 2048g/79164387 2004-09-12
pub 4096R/C0B21F32 2012-05-11
Key fingerprint = 790B C727 7767 219C 42C8 6F93 3B4F E6AC C0B2 1F32
uid Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@xxxxxxxxxx>
pub 4096R/EFE21092 2012-05-11
Key fingerprint = 8439 38DF 228D 22F7 B374 2BC0 D94A A3F0 EFE2 1092
uid Ubuntu CD Image Automatic Signing Key (2012) <cdimage@xxxxxxxxxx>
pub 1024D/FBB75451 2004-12-30
Key fingerprint = C598 6B4F 1257 FFA8 6632 CBA7 4618 1433 FBB7 5451
uid Ubuntu CD Image Automatic Signing Key <cdimage@xxxxxxxxxx>
pub 4096R/991BC93C 2018-09-17
Key fingerprint = F6EC B376 2474 EDA9 D21B 7022 8719 20D1 991B C93C
uid Ubuntu Archive Automatic Signing Key (2018) <ftpmaster@xxxxxxxxxx>
* Dist upgrade to bionic
* Observe that only 3 keys are trusted the 2012 cdimage&archive + 2018 key, and that none of them are in /etc/apt/trusted.gpg but are key snippets in /etc/apt/trusted.gpg.d/
# apt-key list
/etc/apt/trusted.gpg.d/ubuntu-keyring-2012-archive.gpg
------------------------------------------------------
pub rsa4096 2012-05-11 [SC]
790B C727 7767 219C 42C8 6F93 3B4F E6AC C0B2 1F32
uid [ unknown] Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@xxxxxxxxxx>
/etc/apt/trusted.gpg.d/ubuntu-keyring-2012-cdimage.gpg
------------------------------------------------------
pub rsa4096 2012-05-11 [SC]
8439 38DF 228D 22F7 B374 2BC0 D94A A3F0 EFE2 1092
uid [ unknown] Ubuntu CD Image Automatic Signing Key (2012) <cdimage@xxxxxxxxxx>
/etc/apt/trusted.gpg.d/ubuntu-keyring-2018-archive.gpg
------------------------------------------------------
pub rsa4096 2018-09-17 [SC]
F6EC B376 2474 EDA9 D21B 7022 8719 20D1 991B C93C
uid [ unknown] Ubuntu Archive Automatic Signing Key (2018) <ftpmaster@xxxxxxxxxx>
[Regression Potential]
* Adding additional new trust key can trigger support request (aka
why are you adding this key on xenial). The reason to add this key on
xenial, is for xenial to allow securely debootstrap and operate on
Groovy+ repositories which are about to drop 2012 key signatures.
[Other Info]
* Bionic switched from shipping keys in /etc/apt/trusted.gpg keyring, to individual snippets. Thus xenial's upload that adds the future key to /etc/apt/trusted.gpg should also remove it, during upgrade to bionic. To ensure that the systems upgraded from xenial to bionic, look the same as those that are fresh bionic installations.
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Follow ups
