Impact

Users running using the Argo Server with --auth-mode=server (which is the default < v3.0.0) AND have exposed their UI to the Internet may allow remote users to execute arbitrary code on their cluster, e.g. crypto-mining.

Resolution

• Do not expose your user interface to the Internet.
• Change configuration. --auth-mode=client.

For users using an older 2.x version of Argo Server, consider upgrading to Argo Server version 3.x or later.

References

• GHSA-rc7p-gmvh-xfx2
• https://www.intezer.com/blog/container-security/new-attacks-on-kubernetes-via-misconfigured-argo-workflows/