GHSA-c52f-pq47-2r9j plugin.yaml file allows for duplicate entries in helm

• Go helm.sh/helm/v3: >= 3.0.0, < 3.3.2 → fixed in 3.3.2 • Go helm.sh/helm: >= 2.0.0, < 2.16.11 → fixed in 2.16.11

Impact During a security audit of Helm's code base, Helm maintainers identified a bug in which a Helm plugin can contain duplicates of the same entry, with the last one always used. If a plugin is compromised, this lowers the level of access that an attacker needs to modify a plugin's install hooks, causing a local execution attack. To perform this attack, an attacker must have write access to the git repository or plugin archive (.tgz) while being downloaded (which can occur during a MITM attack on a non-SSL connection). Patches This issue has been patched in Helm 2.16.11 and Helm 3.3.2. Workarounds Make sure to install plugins using a secure connection protocol like SSL.