EUVD-2025-7159

Comprehensive Technical Analysis of EUVD-2025-7159

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in EUVD-2025-7159 affects the kcp (Kubernetes-like control plane) software, specifically versions prior to 0.26.3. This vulnerability allows an attacker to create or delete objects via the APIExport VirtualWorkspace in any arbitrary target workspace, bypassing the intended access controls. The CVSS (Common Vulnerability Scoring System) base score of 9.6 indicates a critical severity level. The scoring vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
• Attack Complexity (AC): Low (L) - The attack requires minimal complexity.
• Privileges Required (PR): Low (L) - The attacker needs low-level privileges to exploit the vulnerability.
• User Interaction (UI): None (N) - No user interaction is required.
• Scope (S): Changed (C) - The vulnerability affects a different security scope.
• Confidentiality (C): High (H) - There is a high impact on confidentiality.
• Integrity (I): High (H) - There is a high impact on integrity.
• Availability (A): None (N) - There is no impact on availability.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector involves exploiting the APIExport VirtualWorkspace to create or delete objects in any target workspace. This can be achieved by:

• Unauthorized Access: An attacker with low-level privileges can exploit the vulnerability to gain unauthorized access to create or delete objects.
• Bypassing Access Controls: The attacker can bypass the requirement for an APIBinding, which is intended to control access to the workspace.
• Permission Claim Rejection: Even if the workspace owner has rejected a permission claim, the attacker can still perform unauthorized actions.

3. Affected Systems and Software Versions

The vulnerability affects kcp versions prior to 0.26.3. Specifically:

• kcp versions: < 0.26.3
• Vendor: kcp-dev

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following strategies are recommended:

• Upgrade to the Latest Version: Upgrade kcp to version 0.26.3 or later, where the vulnerability has been fixed.
• Access Controls: Implement strict access controls and regularly review permissions to ensure that only authorized users have access to critical resources.
• Monitoring and Logging: Enhance monitoring and logging to detect any unauthorized access or suspicious activities related to the APIExport VirtualWorkspace.
• Regular Audits: Conduct regular security audits to identify and address potential vulnerabilities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using kcp for managing Kubernetes-like control planes. Given the critical nature of the vulnerability, it could lead to unauthorized access and manipulation of resources, compromising the confidentiality and integrity of data. This is particularly concerning for European organizations that rely on kcp for managing sensitive workloads, as it could result in data breaches and compliance violations under regulations such as GDPR.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerability Identification: The vulnerability is identified by EUVD-2025-7159, CVE-2025-29922, and GHSA-w2rr-38wv-8rrp.
• Fix Information: The issue has been addressed in kcp versions 0.26.3 and 0.27.0. The relevant GitHub pull request is #3338, and the commit is 614ecbf35f11db00f65391ab6fbb1547ca8b5d38.
• References: Additional information can be found at the following links:
  • GitHub Security Advisory
  • NVD Detail
  • kcp GitHub Repository

By understanding these details, security professionals can take proactive measures to protect their systems and ensure the integrity and confidentiality of their data.