CVE-2020-15187

In Helm before versions 2.16.11 and 3.3.2, 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 plugins 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). This issue has been patched in Helm 2.16.11 and Helm 3.3.2. As a possible workaround make sure to install plugins using a secure connection protocol like SSL.

Weakness

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Affected Software

Potential Mitigations

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/10.html
• https://cwe.mitre.org/data/definitions/101.html
• https://cwe.mitre.org/data/definitions/105.html
• https://cwe.mitre.org/data/definitions/108.html
• https://cwe.mitre.org/data/definitions/120.html
• https://cwe.mitre.org/data/definitions/13.html
• https://cwe.mitre.org/data/definitions/135.html
• https://cwe.mitre.org/data/definitions/14.html
• https://cwe.mitre.org/data/definitions/24.html
• https://cwe.mitre.org/data/definitions/250.html
• https://cwe.mitre.org/data/definitions/267.html
• https://cwe.mitre.org/data/definitions/273.html
• https://cwe.mitre.org/data/definitions/28.html
• https://cwe.mitre.org/data/definitions/3.html
• https://cwe.mitre.org/data/definitions/34.html
• https://cwe.mitre.org/data/definitions/42.html
• https://cwe.mitre.org/data/definitions/43.html
• https://cwe.mitre.org/data/definitions/45.html
• https://cwe.mitre.org/data/definitions/46.html
• https://cwe.mitre.org/data/definitions/47.html
• https://cwe.mitre.org/data/definitions/51.html
• https://cwe.mitre.org/data/definitions/52.html
• https://cwe.mitre.org/data/definitions/53.html
• https://cwe.mitre.org/data/definitions/6.html
• https://cwe.mitre.org/data/definitions/64.html
• https://cwe.mitre.org/data/definitions/67.html
• https://cwe.mitre.org/data/definitions/7.html
• https://cwe.mitre.org/data/definitions/71.html
• https://cwe.mitre.org/data/definitions/72.html
• https://cwe.mitre.org/data/definitions/76.html
• https://cwe.mitre.org/data/definitions/78.html
• https://cwe.mitre.org/data/definitions/79.html
• https://cwe.mitre.org/data/definitions/8.html
• https://cwe.mitre.org/data/definitions/80.html
• https://cwe.mitre.org/data/definitions/83.html
• https://cwe.mitre.org/data/definitions/84.html
• https://cwe.mitre.org/data/definitions/9.html

References

• 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/helm/helm/commit/d9ef5ce8bad512e325390c0011be1244b8380e4b
• https://github.com/helm/helm/security/advisories/GHSA-c52f-pq47-2r9j