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feat(cli): add sts:TagSession permission to trusted accounts on bootstrap #762

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@antonu17 antonu17 commented Aug 3, 2025

Description

Accounts bootstrapped with --trust or --trust-for-lookup need sts:TagSession permissions in AssumeRolePolicy.

I got errors during cdk deploy run in CD pipelines executed on EKS cluster on the trusted account.

Error message:
Could not assume role in target account using current credentials (which are for account <TRUSTED_ACCOUT>) User: arn:aws:sts::<TRUSTED_ACCOUT>:assumed-role/<eks-pod-role> is not authorized to perform: sts:TagSession on resource: arn:aws:iam::<TARGET_ACCOUNT>:role/cdk-hnb659fds-lookup-role-<TARGET_ACCOUNT>-us-east-1

Troubleshooting revealed that DeploymentActionRole, FilePublishingRole, ImagePublishingRole, LookupRole don't have sts:TagSession. After updating AssumeRolePolicy cdk deploy worked normally.

Fixes aws/aws-cdk#31557


By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

@aws-cdk-automation aws-cdk-automation requested a review from a team August 3, 2025 17:03
@github-actions github-actions bot added the p2 label Aug 3, 2025
@antonu17 antonu17 changed the title feat(cli): add sts:TagSession permission to trusted accounts feat(cli): add sts:TagSession permission to trusted accounts on bootstrap Aug 3, 2025
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codecov-commenter commented Aug 5, 2025

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.21%. Comparing base (9f8d2ec) to head (0a5e3a0).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff             @@
##             main     #762      +/-   ##
==========================================
+ Coverage   81.16%   81.21%   +0.04%     
==========================================
  Files          61       61              
  Lines        8267     8267              
  Branches      952      950       -2     
==========================================
+ Hits         6710     6714       +4     
+ Misses       1529     1528       -1     
+ Partials       28       25       -3     
Flag Coverage Δ
suite.unit 81.21% <ø> (+0.04%) ⬆️

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core: Allow sts:TagSession to trusted accounts
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