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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-02-08T19:07:14.089Z

Updated: 2024-08-02T11:18:35.855Z

Reserved: 2023-02-03T16:59:18.246Z

Link: CVE-2023-25165

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-02-08T20:15:24.937

Modified: 2023-02-16T20:10:18.263

Link: CVE-2023-25165

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-02-08T00:00:00Z

Links: CVE-2023-25165 - Bugzilla