4.3

CVE-2023-25165: getHostByName Function Information Disclosure

Modified
AliasesSUSE-SU-2023:1571-1SUSE-SU-2023:1752-1SUSE-SU-2023:2100-1
Published 08-02-2023Last modified 10-03-2025

Vulnerability summary

CVE-2023-25165 is a medium (CVSS 4.3) vulnerability in helm. EPSS estimates a 0.77% chance of exploitation in the next 30 days, higher than 55.6% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Routine

Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.77%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 1 · Related 4
OPENSUSE-SU-2025:15779-1CGA-437H-JM9G-RH24CGA-GM8W-H288-PQJ4CGA-GPJ7-899C-2322

Timeline

  1. 08-02-2023
    PublishedVulnerability first disclosed.
  2. 10-03-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.77%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.77% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Helm

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Opensuse11 products
  • cilium-cli&distro=openSUSE Tumbleweed< 0.12.13-1.1
  • helm&distro=openSUSE Leap 15.4< 3.11.1-150000.1.16.1
  • helm&distro=openSUSE Tumbleweed< 3.11.1-1.1
  • helmfile&distro=openSUSE Tumbleweed< 0.150.0-2.1
  • k9s&distro=openSUSE Tumbleweed< 0.27.3-1.1
Suse7 products
  • helm&distro=SUSE Linux Enterprise Module for Containers 15 SP4< 3.11.1-150000.1.16.1
  • helm&distro=SUSE Linux Enterprise Module for Package Hub 15 SP4< 3.11.1-150000.1.16.1
  • terraform-provider-helm&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP1< 2.9.0-150100.3.6.3
  • terraform-provider-helm&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP2< 2.9.0-150200.6.8.1
  • terraform-provider-helm&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP3< 2.9.0-150200.6.8.1
Chainguard3 products
  • helm< 3.11.1-r0
  • helm-3< 3.19.2-r1
  • helm-4< 4.0.1-r1
Wolfi3 products
  • helm< 3.11.1-r0
  • helm-3< 3.19.2-r1
  • helm-4< 4.0.1-r1
Helm1 product
  • helm≥ 3.0.0, < 3.11.1
Helm.sh/helm1 product
  • v3≥ 3.0.0, < 3.11.1 | < 3.11.1

6 vendors · 26 products

References

15 links
Show all 15 references