Kubernetes kube-apiserver Node Address input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Kubernetes kube-apiserver. This affects an unknown part of the component Node Address Handler. The manipulation leads to input validation. This vulnerability is referenced as CVE-2022-3294. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Kubernetes kube-apiserver (Virtualization Software) (affected version unknown) and classified as critical. This issue affects an unknown functionality of the component Node Address Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Users may have access to secure endpoints in the control plane network. Kubernetes clusters are only affected if an untrusted user can modify Node objects and send proxy requests to them. Kubernetes supports node proxying, which allows clients of kube-apiserver to access endpoints of a Kubelet to establish connections to Pods, retrieve container logs, and more. While Kubernetes already validates the proxying address for Nodes, a bug in kube-apiserver made it possible to bypass this validation. Bypassing this validation could allow authenticated requests destined for Nodes to to the API server's private network.

The weakness was published 03/01/2023 as 113757. The advisory is shared at github.com. The identification of this vulnerability is CVE-2022-3294 since 09/23/2022. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211324 (Fedora 37 : kubernetes (2022-8647729ff8)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (211324) and EUVD (EUVD-2023-1049). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.6
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 6.6
CNA Vector (Kubernetes): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211324
Nessus Name: Fedora 37 : kubernetes (2022-8647729ff8)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/23/2022 🔍
03/01/2023 +159 days 🔍
03/01/2023 +0 days 🔍
07/06/2025 +858 days 🔍

Sourcesinfo

Advisory: 113757
Status: Confirmed

CVE: CVE-2022-3294 (🔍)
GCVE (CVE): GCVE-0-2022-3294
GCVE (VulDB): GCVE-100-222125
EUVD: 🔍

Entryinfo

Created: 03/01/2023 21:57
Updated: 07/06/2025 17:45
Changes: 03/01/2023 21:57 (49), 03/30/2023 09:06 (11), 11/15/2024 14:03 (17), 07/06/2025 17:45 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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