CVE-2021-25748 - Vulnerability Details - OpenCVE

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypass the sanitization of the `spec.rules[].http.paths[].path` field of an Ingress object (in the `networking.k8s.io` or `extensions` API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00041.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Kubernetes	Ingress-nginx

Configuration 1 [-]

cpe:2.3:a:kubernetes:ingress-nginx:*:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2023-1500	A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use a newline character to bypass the sanitization of the `spec.rules[].http.paths[].path` field of an Ingress object (in the `networking.k8s.io` or `extensions` API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.
Github GHSA	GHSA-863x-868h-968x	Ingress-nginx `path` sanitization can be bypassed with newline character

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://github.com/kubernetes/ingress-nginx/issues/8686
https://groups.google.com/g/kubernetes-security-announce/c/avaRYa9c7I8

History

Thu, 16 Jan 2025 22:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: kubernetes

Published: 2023-05-24T00:00:00

Updated: 2025-01-16T21:23:39.341Z

Reserved: 2021-01-21T00:00:00

Link: CVE-2021-25748

Vulnrichment

Updated: 2024-08-03T20:11:28.404Z

NVD

Status : Modified

Published: 2023-05-24T17:15:09.253

Modified: 2024-11-21T05:55:20.377

Link: CVE-2021-25748

Redhat

No data.

OpenCVE Enrichment

No data.

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