artifact/template: make destination path absolute inside taskdir (0.12.7) #9150
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Prior to Nomad 0.12.5, you could use `${NOMAD_SECRETS_DIR}/mysecret.txt` as
the `artifact.destination` and `template.destination` because we would always
append the destination to the task working directory. In the recent security
patch we treated the `destination` absolute path as valid if it didn't escape
the working directory, but this breaks backwards compatibility and
interpolation of `destination` fields.
This changeset partially reverts the behavior so that we always append the
destination, but we also perform the escape check on that new destination
after interpolation so the security hole is closed.
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This pull request is being automatically deployed with Vercel (learn more). 🔍 Inspect: https://vercel.com/hashicorp/nomad/6841upm3m |
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krishicks
approved these changes
Oct 22, 2020
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I'm going to lock this pull request because it has been closed for 120 days ⏳. This helps our maintainers find and focus on the active contributions. |
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Backport of #9149 to 0.12.7