Vulnerability Details : 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 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.
Products affected by CVE-2020-15187
- cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*
- cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-15187
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-15187
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST | |
|
4.7
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L |
1.2
|
3.4
|
NIST | |
|
3.0
|
LOW | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:L/A:N |
1.3
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2020-15187
-
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.Assigned by: security-advisories@github.com (Secondary)
-
The product uses multiple resources that can have the same identifier, in a context in which unique identifiers are required.Assigned by: security-advisories@github.com (Secondary)
References for CVE-2020-15187
-
https://github.com/helm/helm/security/advisories/GHSA-c52f-pq47-2r9j
plugin.yaml file allows for duplicate entries · Advisory · helm/helm · GitHubThird Party Advisory
-
https://github.com/helm/helm/commit/d9ef5ce8bad512e325390c0011be1244b8380e4b
Merge pull request from GHSA-c52f-pq47-2r9j · helm/helm@d9ef5ce · GitHubPatch;Third Party Advisory
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