CVE-2020-15187 Information

Description

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 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). 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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

Reference

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

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

LOW

Base Severity

4.7