CVE-2020-15187

Duplicate plugin entries in Helm

Published Sep 17, 2020 CVSS 3.1 · 3 Low EPSS 1.5% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-1035 plugin.yaml file allows for duplicate entries in helm
Github GHSA Github GHSA GHSA-c52f-pq47-2r9j plugin.yaml file allows for duplicate entries in helm
History
Type Values Removed Values Added
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. 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
Type Values Removed Values Added
First Time appeared Redhat
Redhat acm
CPEs cpe:/a:redhat:acm:2.2::el7
Vendors & Products Redhat
Redhat acm
Type Values Removed Values Added
CPEs cpe:/a:redhat:acm:2.2::el7
cpe:/a:redhat:acm:2.2::el8
Vendors & Products Redhat
Redhat acm

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 29, 2025, 10:59 PM
Reserved
Jun 25, 2020, 12:00 AM
Status
Modified
Published
Sep 17, 2020, 10:15 PM
Modified
Jun 17, 2026, 2:56 AM
Severity
Moderate
Public date
Sep 18, 2020, 12:00 AM