Description
Incorrect access control in Adtran 411 ONT L80.00.0011.M2 allows unauthorized attackers to arbitrarily set the admin password.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-8763
1. Vulnerability Assessment and Severity Evaluation
The vulnerability described in EUVD-2025-8763 pertains to an incorrect access control mechanism in Adtran 411 ONT L80.00.0011.M2. This flaw allows unauthorized attackers to arbitrarily set the admin password, thereby gaining unauthorized access to the device. The CVSS (Common Vulnerability Scoring System) base score of 9.1 indicates a critical severity level. The vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N breaks down as follows:
- AV:N (Attack Vector: Network): The vulnerability is exploitable over the network.
- AC:L (Attack Complexity: Low): The attack requires low complexity to exploit.
- PR:N (Privileges Required: None): No privileges are required to exploit the vulnerability.
- UI:N (User Interaction: None): No user interaction is required.
- S:U (Scope: Unchanged): The vulnerability does not change the security scope.
- C:H (Confidentiality: High): There is a high impact on confidentiality.
- I:H (Integrity: High): There is a high impact on integrity.
- A:N (Availability: None): There is no impact on availability.
Given these metrics, the vulnerability is highly critical and poses a significant risk to the confidentiality and integrity of the affected systems.
2. Potential Attack Vectors and Exploitation Methods
The primary attack vector for this vulnerability is network-based. An attacker can exploit the flaw by sending specially crafted network packets to the Adtran 411 ONT device. The attacker does not need any prior authentication or user interaction to exploit this vulnerability.
Potential exploitation methods include:
- Network Scanning: Identifying vulnerable devices on the network.
- Password Reset: Sending crafted packets to reset the admin password.
- Unauthorized Access: Gaining administrative access to the device and performing unauthorized actions.
3. Affected Systems and Software Versions
The vulnerability specifically affects Adtran 411 ONT devices running firmware version L80.00.0011.M2. It is crucial to identify all instances of this device and firmware version within the network to assess the scope of the risk.
4. Recommended Mitigation Strategies
To mitigate the risk associated with this vulnerability, the following strategies are recommended:
- Firmware Update: Immediately update the firmware of the affected Adtran 411 ONT devices to a version that addresses this vulnerability.
- Network Segmentation: Implement network segmentation to isolate vulnerable devices from critical network segments.
- Access Controls: Enforce strict access controls and monitor network traffic for any unauthorized access attempts.
- Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on any suspicious network activity targeting the vulnerable devices.
- Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address similar issues proactively.
5. Impact on European Cybersecurity Landscape
The vulnerability in Adtran 411 ONT devices poses a significant risk to the European cybersecurity landscape, particularly for organizations and infrastructures that rely on these devices. Unauthorized access to these devices can lead to data breaches, service disruptions, and potential compromise of critical infrastructure. The high CVSS score underscores the urgency for immediate remediation to prevent widespread exploitation.
6. Technical Details for Security Professionals
For security professionals, the following technical details are essential:
- Detection: Implement network monitoring tools to detect unusual traffic patterns targeting Adtran 411 ONT devices. Look for patterns indicative of password reset attempts or unauthorized access.
- Response: Develop an incident response plan specific to this vulnerability, including steps for containment, eradication, and recovery.
- Patch Management: Ensure a robust patch management process is in place to quickly apply updates and patches as they become available.
- Documentation: Maintain detailed documentation of all affected devices, their firmware versions, and the steps taken for remediation.
Conclusion
The vulnerability described in EUVD-2025-8763 is critical and requires immediate attention. Organizations should prioritize updating the affected Adtran 411 ONT devices and implement robust security measures to mitigate the risk. Continuous monitoring and proactive security practices are essential to safeguard against such vulnerabilities and maintain the integrity of the European cybersecurity landscape.