fix(coderd/azureidentity): add Azure IMDS G2 chain certificates - #25243
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Azure IMDS attested data signatures can now chain through Microsoft TLS G2 RSA CA OCSP intermediates, then through the cross-signed Microsoft TLS RSA Root G2 certificate, before reaching DigiCert Global Root G2. coderd did not bundle the new G2 OCSP intermediates or the cross-signed Microsoft TLS RSA Root G2 bridge certificate, so it could fail to build a trusted chain for affected IMDS signatures. Related to: https://linear.app/codercom/issue/PLAT-205/bug-azure-instance-identity-verification-is-broken
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Azure IMDS attested data signatures can now chain through
Microsoft TLS G2 RSA CA OCSP intermediates, then through the
cross-signed Microsoft TLS RSA Root G2 certificate, before reaching
DigiCert Global Root G2.
coderd did not bundle the new G2 OCSP intermediates or the
cross-signed Microsoft TLS RSA Root G2 bridge certificate, so it could
fail to build a trusted chain for affected IMDS signatures.
Related to: https://linear.app/codercom/issue/PLAT-205/bug-azure-instance-identity-verification-is-broken
NOTE: I don't have access to Azure at the moment, so I couldn't
reproduce the issue and test the fix. However, I noticed that
creating a workspace on dogfood using the
azure-linuxtemplateresulted in an agent connectivity error, so I figured the issue may
be affecting dogfood too:
Depending on the urgency, we could merge the fix and see if it fixes
the dogfood issue before we verify it in a dev env.