PT-2023-19950 · Helm+2 · Helm+2
Philipp Stehle
·
Published
2023-02-08
·
Updated
2025-11-28
·
CVE-2023-25165
CVSS v3.1
4.3
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
Helm versions prior to 3.11.1
Description
The
getHostByName template function in Helm, introduced in Helm v3, performs a DNS lookup to return an IP address for a given hostname. This function can disclose information passed into the chart to the DNS servers used for the lookup. A malicious chart could exploit this by injecting getHostByName to disclose values to a malicious DNS server. The issue is related to the use of helm install|upgrade|template or the Helm SDK to render a chart.Recommendations
For Helm versions prior to 3.11.1, update to Helm 3.11.1 to resolve the issue.
As a temporary workaround, verify that the
getHostByName function is not being used in a template to disclose any information you do not want passed to DNS servers before using a chart with Helm.Exploit
Fix
Information Disclosure
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Helm
Suse