EUVD-2025-7296

Comprehensive Technical Analysis of EUVD-2025-7296

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-7296 affects the D-Link DAP-1620 device, specifically version 1.03. The issue resides in the check_dws_cookie function within the /storage file, where the manipulation of the uid argument results in a stack-based buffer overflow. This vulnerability is classified as critical with a CVSS base score of 9.3, indicating a high level of severity.

CVSS Vector Breakdown:

• AV:N (Network Vector): The vulnerability can be exploited remotely over the network.
• AC:L (Low Complexity): The attack requires low skill or resources to exploit.
• AT:N (No Authentication): No authentication is required to exploit the vulnerability.
• PR:N (No Privileges Required): No special privileges are needed to exploit the vulnerability.
• UI:N (No User Interaction): No user interaction is required to exploit the vulnerability.
• VC:H (High Confidentiality Impact): Successful exploitation results in high confidentiality impact.
• VI:H (High Integrity Impact): Successful exploitation results in high integrity impact.
• VA:H (High Availability Impact): Successful exploitation results in high availability impact.
• SC:N (No Scope Change): The vulnerability does not change the security scope.
• SI:N (No Scope Change): The vulnerability does not change the security scope.
• SA:N (No Scope Change): The vulnerability does not change the security scope.

2. Potential Attack Vectors and Exploitation Methods

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

• Remote Exploitation: An attacker can remotely exploit the vulnerability by sending specially crafted packets to the affected device.
• Buffer Overflow: The manipulation of the uid argument in the check_dws_cookie function can lead to a stack-based buffer overflow, potentially allowing arbitrary code execution.
• Public Exploit Availability: The exploit has been disclosed to the public, increasing the likelihood of widespread attacks.

3. Affected Systems and Software Versions

The vulnerability specifically affects:

• D-Link DAP-1620 version 1.03.

It is important to note that this vulnerability only affects products that are no longer supported by the maintainer, which means that no patches or updates will be provided by D-Link.

4. Recommended Mitigation Strategies

Given the critical nature of the vulnerability and the lack of support from the vendor, the following mitigation strategies are recommended:

• Network Segmentation: Isolate affected devices from critical networks to limit the potential impact of an exploit.
• Firewall Rules: Implement strict firewall rules to restrict access to the affected device.
• Monitoring and Detection: Deploy intrusion detection systems (IDS) and intrusion prevention systems (IPS) to monitor for suspicious activity.
• Upgrade or Replacement: Consider upgrading to a supported version of the device or replacing it with a supported alternative.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.

5. Impact on European Cybersecurity Landscape

The presence of this vulnerability in unsupported devices poses a significant risk to the European cybersecurity landscape. Organizations and individuals using the affected D-Link DAP-1620 devices are at risk of remote exploitation, which can lead to data breaches, unauthorized access, and service disruptions. The public disclosure of the exploit further exacerbates the risk, as malicious actors can easily obtain and use the exploit.

6. Technical Details for Security Professionals

Vulnerability Details:

• Function Affected: check_dws_cookie
• File Affected: /storage
• Argument Manipulated: uid
• Type of Vulnerability: Stack-based buffer overflow

Exploitation Steps:

1. Identify Target: Locate the D-Link DAP-1620 device on the network.
2. Craft Malicious Packet: Create a packet with a manipulated uid argument designed to overflow the stack.
3. Send Packet: Transmit the crafted packet to the target device.
4. Exploit: Achieve arbitrary code execution or cause a denial of service (DoS).

Detection and Response:

• Log Analysis: Monitor logs for unusual activity related to the check_dws_cookie function.
• Network Traffic Analysis: Use network traffic analysis tools to detect anomalous packets targeting the affected device.
• Incident Response: Have an incident response plan in place to quickly address any detected exploitation attempts.

References:

• VulDB Entry
• CTIID Entry
• Submission Details
• Notion Site
• D-Link Official Site
• NVD Entry

By following these recommendations and staying vigilant, organizations can mitigate the risks associated with this critical vulnerability.