EUVD-2024-20993

Comprehensive Technical Analysis of EUVD-2024-20993

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2024-20993 pertains to an out-of-bounds write in the Linux kernel mode driver for certain Intel(R) Ethernet Network Controllers and Adapters. This flaw can be exploited by an authenticated user with local access to escalate privileges. 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.
• AC:L (Low Attack Complexity): The attack is relatively straightforward to execute.
• AT:N (No Authentication Required): No additional authentication is needed beyond local access.
• PR:L (Low Privileges Required): The attacker needs low-level privileges.
• UI:N (No User Interaction): No user interaction is required.
• VC:H (High Vulnerability Confidentiality Impact): The vulnerability significantly impacts confidentiality.
• VI:H (High Vulnerability Integrity Impact): The vulnerability significantly impacts integrity.
• VA:H (High Vulnerability Availability Impact): The vulnerability significantly impacts availability.
• SC:H (High Scope Change): The vulnerability affects components beyond its security scope.
• SI:H (High Scope Integrity Impact): The vulnerability significantly impacts the integrity of the affected scope.
• SA:H (High Scope Availability Impact): The vulnerability significantly impacts the availability of the affected scope.

2. Potential Attack Vectors and Exploitation Methods

An attacker with local access to the system can exploit this vulnerability by crafting specific network packets or commands that trigger the out-of-bounds write in the kernel mode driver. This can lead to arbitrary code execution with elevated privileges, allowing the attacker to gain control over the system.

Potential Exploitation Methods:

• Crafted Network Packets: An attacker can send specially crafted network packets to the vulnerable driver.
• Local Commands: An attacker can execute local commands that interact with the driver in a way that triggers the out-of-bounds write.

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 any Linux distribution are potentially at risk.

Affected Software Versions:

• Intel(R) Ethernet Network Controllers and Adapters drivers before version 28.3

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Update Drivers: Upgrade to the latest driver version (28.3 or higher) provided by Intel.
• Restrict Access: Limit local access to trusted users only.
• Monitoring: Implement monitoring and logging to detect any unusual activity related to the network drivers.

Long-Term Mitigation:

• Regular Patching: Ensure that all systems are regularly updated with the latest security patches.
• Access Controls: Enforce strict access controls and least privilege principles.
• Network Segmentation: Segment networks to limit the potential impact of a compromised system.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations and individuals within the European Union that rely on Linux systems with the affected Intel network drivers. Given the widespread use of Linux in various critical infrastructures, including government, healthcare, and financial sectors, the potential impact is substantial.

Potential Impacts:

• Data Breaches: Unauthorized access to sensitive data.
• System Compromise: Complete takeover of affected systems.
• Service Disruption: Interruption of critical services due to system compromise.

6. Technical Details for Security Professionals

Vulnerability Details:

• Type: Out-of-bounds write
• Location: Linux kernel mode driver for Intel(R) Ethernet Network Controllers and Adapters
• Trigger: Crafted network packets or local commands

Detection and Response:

• Detection: Use intrusion detection systems (IDS) to monitor for unusual network traffic patterns and driver interactions.
• Response: Implement incident response plans to quickly identify and mitigate any exploitation attempts.

References:

• Intel Security Advisory: Intel SA-00918

Aliases:

• CVE-2024-23497
• GSD-2024-23497

Assigner:

• Intel

EPSS:

• N/A

ENISA ID:

• Product: []
• Vendor: [{"id":"9f03d1b1-7b0d-3c54-a8b0-7583967000c1","vendor":{"name":"n/a"}}]

By addressing this vulnerability promptly and comprehensively, organizations can significantly reduce the risk of exploitation and maintain the integrity and security of their systems.