{"id":"BIT-helm-2023-25165","summary":"getHostByName Function Information Disclosure","details":"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.","aliases":["CVE-2023-25165","GHSA-pwcw-6f5g-gxf8","GO-2023-1547"],"modified":"2025-05-20T10:02:07.006Z","published":"2024-03-06T10:53:11.303Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"https://github.com/helm/helm/commit/5abcf74227bfe8e5a3dbf105fe62e7b12deb58d2"},{"type":"WEB","url":"https://github.com/helm/helm/security/advisories/GHSA-pwcw-6f5g-gxf8"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-25165"}],"affected":[{"package":{"name":"helm","ecosystem":"Bitnami","purl":"pkg:bitnami/helm"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"3.11.1"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/helm/BIT-helm-2023-25165.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}],"schema_version":"1.7.3"}