EUVD-2025-199605

Comprehensive Technical Analysis of EUVD-2025-199605

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-199605 pertains to the Syrotech SY-GPON-1110-WDONT device running firmware version SYRO_3.7L_3.1.02-240517. The issue allows attackers to extract sensitive cryptographic material, including the SSL Private Key, CA Certificate, SSL Certificate, and Client Certificates in .pem format from the firmware's etc folder.

Severity Evaluation:

• Base Score: 9.0 (Critical)
• Base Score Version: CVSS:3.1
• Base Score Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

The CVSS score of 9.0 indicates a critical vulnerability. The vector string highlights the following:

• Attack Vector (AV): Local (L) - The attacker must have local access to exploit the vulnerability.
• Attack Complexity (AC): Low (L) - The attack requires minimal skill or resources.
• Privileges Required (PR): None (N) - No special privileges are required 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

Attack Vectors:

• Local Access: An attacker with physical or local network access to the device can exploit this vulnerability.
• Firmware Extraction: The attacker can extract the firmware from the device and analyze it to locate the sensitive cryptographic material.

Exploitation Methods:

• Firmware Analysis: Using tools like binwalk or firmware-mod-kit, an attacker can extract and analyze the firmware image to locate the etc folder containing the .pem files.
• Direct Access: If the device allows direct access to the file system (e.g., via SSH or a web interface), the attacker can navigate to the etc folder and retrieve the certificates.

3. Affected Systems and Software Versions

Affected Systems:

• Syrotech SY-GPON-1110-WDONT devices

Affected Software Versions:

• Firmware version SYRO_3.7L_3.1.02-240517

4. Recommended Mitigation Strategies

Immediate Actions:

• Firmware Update: Apply the latest firmware update from Syrotech that addresses this vulnerability.
• Access Control: Restrict physical and network access to the device to authorized personnel only.
• Monitoring: Implement monitoring and logging to detect any unauthorized access attempts.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits and vulnerability assessments of all network devices.
• Encryption: Ensure that sensitive data, including cryptographic material, is stored securely and encrypted.
• Patch Management: Establish a robust patch management process to ensure timely updates and patches are applied.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals using Syrotech SY-GPON-1110-WDONT devices. The extraction of SSL Private Keys and certificates can lead to:

• Data Breaches: Unauthorized access to sensitive data.
• Man-in-the-Middle Attacks: Interception and manipulation of encrypted communications.
• Reputation Damage: Loss of trust in the affected organization's ability to secure data.

6. Technical Details for Security Professionals

Vulnerability Details:

• Location: The sensitive cryptographic material is stored in the etc folder of the firmware.
• File Format: The certificates and keys are in .pem format.

Detection Methods:

• Firmware Analysis: Use firmware analysis tools to inspect the firmware image for the presence of sensitive files.
• File System Checks: Verify the contents of the etc folder for any unauthorized files or configurations.

Mitigation Steps:

• Firmware Update: Ensure the device is running the latest firmware version that addresses this vulnerability.
• Access Control: Implement strict access controls to prevent unauthorized access to the device.
• Encryption: Ensure that all sensitive data is encrypted and stored securely.

References:

• GitHub Security Assessment
• NVD Detail

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risks associated with EUVD-2025-199605 and enhance their overall cybersecurity posture.