CVE-2020-15187
plugin.yaml file allows for duplicate entries in helm
Impact
### 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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | helm.sh/helm/v3 | >= 3.0.0, < 3.3.2 | 3.3.2 |
| go | helm.sh/helm | >= 2.0.0, < 2.16.11 | 2.16.11 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Helm | Helm | from 2.0.0 before 2.16.11 from 3.0.0 before 3.3.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/helm/helm/commit/6aab63765f99050b115f0aec3d6350c85e8da946
- https://github.com/helm/helm/commit/ac7c07c37d87e09797f714fb57aa5e9cb99d9450
- https://github.com/helm/helm/commit/b0296c0522e837d65f944beefa3fb64fd08ac304
- https://github.com/helm/helm/commit/c8d6b01d72c9604e43ee70d0d78fadd54c2d8499
- https://github.com/helm/helm/commit/d9ef5ce8bad512e325390c0011be1244b8380e4b
- https://github.com/helm/helm/commit/f2ede29480b507b7d8bb152dd8b6b86248b00658
- https://github.com/helm/helm/security/advisories/GHSA-c52f-pq47-2r9j
- https://github.com/advisories/GHSA-c52f-pq47-2r9j
- https://nvd.nist.gov/vuln/detail/CVE-2020-15187