Description (CNA)
Helm is a tool that streamlines installing and managing Kubernetes applications.`getHostByName` is a Helm template function introduced in Helm v3. The function is able to accept a hostname and return an IP address for that hostname. To get the IP address the function performs a DNS lookup. The DNS lookup happens when used with `helm install|upgrade|template` or when the Helm SDK is used to render a chart. Information passed into the chart can be disclosed to the DNS servers used to lookup the IP address. For example, a malicious chart could inject `getHostByName` into a chart in order to disclose values to a malicious DNS server. The issue has been fixed in Helm 3.11.1. Prior to using a chart with Helm verify the `getHostByName` function is not being used in a template to disclose any information you do not want passed to DNS servers.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| helm / helm | affected >= 3.0.0, < 3.11.1 |
CWE
CWE-200
References
- https://github.com/helm/helm/security/advisories/GHSA-pwcw-6f5g-gxf8
- https://github.com/helm/helm/commit/5abcf74227bfe8e5a3dbf105fe62e7b12deb58d2
ADP enrichment
No English description supplied.
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No references supplied.