{"id":"CVE-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":["BIT-helm-2023-25165","GHSA-pwcw-6f5g-gxf8","GO-2023-1547"],"modified":"2026-04-10T04:55:59.628267Z","published":"2023-02-08T19:07:14.089Z","related":["CGA-gm8w-h288-pqj4","SUSE-SU-2023:1571-1","SUSE-SU-2023:1752-1","SUSE-SU-2023:2100-1","openSUSE-SU-2023:0064-1","openSUSE-SU-2024:12667-1","openSUSE-SU-2024:12668-1","openSUSE-SU-2024:12676-1","openSUSE-SU-2024:12682-1","openSUSE-SU-2024:12683-1","openSUSE-SU-2024:12692-1","openSUSE-SU-2024:12695-1","openSUSE-SU-2024:12729-1","openSUSE-SU-2025:15779-1"],"database_specific":{"cwe_ids":["CWE-200"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/25xxx/CVE-2023-25165.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/25xxx/CVE-2023-25165.json"},{"type":"ADVISORY","url":"https://github.com/helm/helm/security/advisories/GHSA-pwcw-6f5g-gxf8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-25165"},{"type":"FIX","url":"https://github.com/helm/helm/commit/5abcf74227bfe8e5a3dbf105fe62e7b12deb58d2"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/helm/helm","events":[{"introduced":"e29ce2a54e96cd02ccfce88bee4f58bb6e2a28b6"},{"fixed":"293b50c65d4d56187cd4e2f390f0ada46b4c4737"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-25165.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}