Bug 1882300 (CVE-2020-15187) - CVE-2020-15187 helm: write access to the git repository or plugin archive causing causing a local execution attack
Summary: CVE-2020-15187 helm: write access to the git repository or plugin archive cau...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-15187
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
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Depends On: 1884136 1893876
Blocks: 1882307
TreeView+ depends on / blocked
 
Reported: 2020-09-24 09:37 UTC by Dhananjay Arunesh
Modified: 2021-12-15 02:52 UTC (History)
15 users (show)

Fixed In Version: helm 3.3.2, helm 2.16.11
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Last Closed: 2021-10-28 05:03:35 UTC
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Description Dhananjay Arunesh 2020-09-24 09:37:25 UTC 
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.

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