Information Exposure Affecting helm package, versions <3.11.1-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.06% (27th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-HELM-5846617
  • published21 Aug 2023
  • disclosed8 Feb 2023

Introduced: 8 Feb 2023

CVE-2023-25165  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Chainguard helm to version 3.11.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream helm package and not the helm package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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.

CVSS Scores

version 3.1