CVE-2025-47282: Malicious google credential in DNS secret can lead to privilege escalation
A security vulnerability was discovered in Gardener that could allow a user with administrative privileges for a Gardener project or a user with administrative privileges for a shoot cluster, including administrative privileges for a single namespace of the shoot cluster, to obtain control over the seed cluster where the shoot cluster is managed.
Am I Vulnerable?
This CVE affects all Gardener installations no matter of the public cloud provider(s) used for the seed clusters/shoot clusters.
Affected Components
- gardener/external-dns-management
Affected Versions
- < 0.23.6
Fixed Versions
- >= 0.23.6
Important
The external-dns-management component may also be deployed on the seeds by the https://github.com/gardener/gardener-extension-shoot-dns-service extension when the extension is enabled. In this case, all versions of the shoot-dns-service extension <= v1.60.0 are affected by this vulnerability.
How do I mitigate this vulnerability?
Update to a fixed version.
Other sources
Gardener External DNS Management is an environment to manage external DNS entries for a kubernetes cluster. A security vulnerability was discovered in Gardener's External DNS Management prior to version 0.23.6 that could allow a user with administrative privileges for a Gardener project or a user with administrative privileges for a shoot cluster, including administrative privileges for a single namespace of the shoot cluster, to obtain control over the seed cluster where the shoot cluster is managed. This CVE affects all Gardener installations no matter of the public cloud provider(s) used for the seed clusters/shoot clusters. The affected component is gardener/external-dns-management. The external-dns-management component may also be deployed on the seeds by the gardener/gardener-extension-shoot-dns-service extension when the extension is enabled. In this case, all versions of the shoot-dns-service extension <= v1.60.0 are affected by this vulnerability. Version 0.23.6 of Gardener External DNS Management fixes the issue.
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-47282?
CVE-2025-47282 is considered a high-severity vulnerability due to its potential impact on user privileges within the Gardener External DNS Management.
How do I fix CVE-2025-47282?
To fix CVE-2025-47282, upgrade Gardener External DNS Management to version 0.23.6 or later.
Who is affected by CVE-2025-47282?
CVE-2025-47282 affects users with administrative privileges using Gardener External DNS Management versions prior to 0.23.6.
What can an attacker do with CVE-2025-47282?
An attacker with admin access could exploit CVE-2025-47282 to manipulate external DNS entries incorrectly.
Is there a workaround for CVE-2025-47282?
There are no specific workarounds available for CVE-2025-47282; upgrading to the patched version is recommended.