EUVD-2024-19419

Comprehensive Technical Analysis of EUVD-2024-19419

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2024-19419 pertains to an improper initialization in the Linux kernel mode driver for certain Intel(R) Ethernet Network Controllers and Adapters. This flaw can potentially allow an authenticated user to escalate their privileges via local access. The severity of this vulnerability is rated with a Base Score of 9.3 according to CVSS 4.0, indicating a critical risk.

CVSS 4.0 Vector Breakdown:

• AV:L (Local Access Vector): The vulnerability requires local access to exploit.
• AC:L (Low Attack Complexity): The attack complexity is low, meaning it does not require specialized conditions.
• AT:N (No Authentication Required): No additional authentication is required beyond the initial local access.
• PR:L (Low Privileges Required): The attacker needs low-level privileges to exploit the vulnerability.
• UI:N (No User Interaction): No user interaction is required for the exploit to succeed.
• VC:H (High Confidentiality Impact): The vulnerability has a high impact on confidentiality.
• VI:H (High Integrity Impact): The vulnerability has a high impact on integrity.
• VA:H (High Availability Impact): The vulnerability has a high impact on availability.
• SC:H (High Scope Change): The vulnerability affects components beyond the security scope.
• SI:H (High Scope Integrity): The vulnerability has a high impact on the integrity of the affected scope.
• SA:H (High Scope Availability): The vulnerability has a high impact on the availability of the affected scope.

2. Potential Attack Vectors and Exploitation Methods

Given the nature of the vulnerability, potential attack vectors include:

• Local Privilege Escalation: An authenticated user with low-level privileges could exploit the improper initialization to gain higher privileges on the system.
• Kernel-Level Exploits: The attacker could craft specific kernel-level operations to manipulate the driver's behavior, leading to privilege escalation.
• Malicious Software: An attacker could deploy malicious software that exploits this vulnerability to gain elevated privileges, potentially leading to full system compromise.

3. Affected Systems and Software Versions

The vulnerability affects Linux kernel mode drivers for Intel(R) Ethernet Network Controllers and Adapters before version 28.3. Systems running these drivers on older versions are at risk. Specifically, any Linux distribution that includes these drivers and has not been updated to version 28.3 or later is vulnerable.

4. Recommended Mitigation Strategies

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

• Update Drivers: Ensure that all affected systems are updated to the latest driver version (28.3 or later) provided by Intel.
• Access Control: Implement strict access controls to limit the number of users with local access to critical systems.
• Monitoring and Logging: Enhance monitoring and logging to detect any unusual activity that may indicate an attempt to exploit this vulnerability.
• Patch Management: Implement a robust patch management process to ensure timely updates and patches are applied to all systems.
• Security Audits: Conduct regular security audits to identify and address any potential vulnerabilities in the system.

5. Impact on European Cybersecurity Landscape

The impact of this vulnerability on the European cybersecurity landscape is significant due to the widespread use of Intel Ethernet Network Controllers and Adapters in various sectors, including government, healthcare, finance, and critical infrastructure. The high severity score and the potential for privilege escalation make it a critical concern for organizations relying on these devices.

6. Technical Details for Security Professionals

Vulnerability Details:

• CVE ID: CVE-2024-21807
• GSD ID: GSD-2024-21807
• Assigner: Intel
• Affected Component: Linux kernel mode driver for Intel(R) Ethernet Network Controllers and Adapters
• Vulnerable Versions: Before version 28.3
• Exploitation: Requires local access and low-level privileges

References:

• Intel Security Advisory

Mitigation Steps:

1. Identify Affected Systems: Use inventory management tools to identify systems running the vulnerable driver versions.
2. Update Drivers: Apply the latest driver updates from Intel.
3. Implement Access Controls: Ensure that only authorized personnel have local access to critical systems.
4. Enhance Monitoring: Deploy intrusion detection systems (IDS) and intrusion prevention systems (IPS) to monitor for suspicious activity.
5. Regular Audits: Conduct regular security audits to ensure compliance with best practices and identify potential vulnerabilities.

By following these steps, organizations can significantly reduce the risk posed by this vulnerability and enhance their overall cybersecurity posture.