Impact

What kind of vulnerability is it? Who is impacted?

• The ability to expose configuration set in the Vela server via pipeline template functionality.
• It impacts all users of Vela.

Sample of template exposing server configuration using Sprig's env function:

metadata:
  template: true

steps:
  - name: sample
    image: alpine:latest
    commands:
      # OAuth client ID for Vela <-> GitHub communication
      - echo {{ env "VELA_SOURCE_CLIENT" }}
      # secret used for server <-> worker communication
      - echo {{ env "VELA_SECRET" }}

Patches

Has the problem been patched? What versions should users upgrade to?

• Upgrade to 0.6.1

Additional Recommended Action(s)

• Rotate all secrets

Workarounds

Is there a way for users to fix or remediate the vulnerability without upgrading?

• No

For more information

If you have any questions or comments about this advisory:

• Email us at vela@target.com

References

• GHSA-gv2h-gf8m-r68j
• https://nvd.nist.gov/vuln/detail/CVE-2020-26294
• go-vela/compiler@f1ace5f
• https://github.com/helm/helm/blob/6297c021cbda1483d8c08a8ec6f4a99e38be7302/pkg/engine/funcs.go#L46-L47
• https://pkg.go.dev/github.com/go-vela/compiler/compiler