SUSE: CVE-2023-25165: SUSE Linux Security Advisory

SUSE: CVE-2023-25165: SUSE Linux Security Advisory

Severity

4

CVSS

(AV:N/AC:L/Au:S/C:P/I:N/A:N)

Published

02/08/2023

Created

03/07/2023

Added

03/06/2023

Modified

01/28/2025

Description

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.

Solution(s)

• suse-upgrade-helm
• suse-upgrade-helm-bash-completion
• suse-upgrade-helm-fish-completion
• suse-upgrade-helm-zsh-completion
• suse-upgrade-terraform-provider-helm
• suse-upgrade-trivy

References

• https://attackerkb.com/topics/cve-2023-25165
• CVE - 2023-25165