// For flags

CVE-2023-25165

getHostByName Function Information Disclosure

Severity Score

4.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

A flaw was found in the helm package. The 'getHostByName' is a Helm template function introduced in Helm v3 and can 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 look up the IP address. For example, a malicious chart could inject getHostByName into a chart to disclose values to a malicious DNS server.

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.13.0. Issues addressed include bypass, denial of service, information leakage, out of bounds read, and remote SQL injection vulnerabilities.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-02-03 CVE Reserved
  • 2023-02-08 CVE Published
  • 2024-08-02 CVE Updated
  • 2024-08-02 First Exploit
  • 2024-08-31 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Helm
Search vendor "Helm"
 Helm
Search vendor "Helm" for product "Helm"
 >= 3.0.0 < 3.11.1
Search vendor "Helm" for product "Helm" and version " >= 3.0.0 < 3.11.1"
-
Affected