Description
A vulnerability in the REST API of Cisco Meeting Management could allow a remote, authenticated attacker with low privileges to elevate privileges to administrator on an affected device. This vulnerability exists because proper authorization is not enforced upon REST API users. An attacker could exploit this vulnerability by sending API requests to a specific endpoint. A successful exploit could allow the attacker to gain administrator-level control over edge nodes that are managed by Cisco Meeting Management.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-2156
1. Vulnerability Assessment and Severity Evaluation
The vulnerability in the REST API of Cisco Meeting Management (CMM) allows a remote, authenticated attacker with low privileges to elevate their privileges to administrator level. This vulnerability arises due to improper authorization enforcement on REST API users. The CVSS (Common Vulnerability Scoring System) base score of 9.9 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H breaks down as follows:
- AV:N (Attack Vector: Network) - The vulnerability is exploitable remotely over the network.
- AC:L (Attack Complexity: Low) - The attack requires low complexity to exploit.
- PR:L (Privileges Required: Low) - The attacker needs low-level privileges to exploit the vulnerability.
- UI:N (User Interaction: None) - No user interaction is required for the attack to succeed.
- S:C (Scope: Changed) - The vulnerability affects a component that is outside the security scope of the vulnerable component.
- C:H (Confidentiality: High) - The vulnerability has a high impact on the confidentiality of the system.
- I:H (Integrity: High) - The vulnerability has a high impact on the integrity of the system.
- A:H (Availability: High) - The vulnerability has a high impact on the availability of the system.
2. Potential Attack Vectors and Exploitation Methods
An attacker could exploit this vulnerability by sending specially crafted API requests to a specific endpoint within the CMM REST API. The attacker would need to be authenticated but only with low-level privileges. The lack of proper authorization enforcement allows the attacker to escalate their privileges to administrator level.
Potential attack vectors include:
- Network-based Attacks: Since the attack vector is network-based, the attacker can exploit the vulnerability remotely.
- API Abuse: The attacker can send malicious API requests to the vulnerable endpoint, bypassing authorization checks.
3. Affected Systems and Software Versions
The vulnerability affects multiple versions of Cisco Meeting Management, including:
- CMM3.1.0
- CMM3.7.0
- CMM3.9.0
- CMM3.2.0
- CMM3.6.1
- CMM3.8.0
- CMM2.9.1
- CMM2.9.0
- CMM3.4.0
- CMM3.5.0
4. Recommended Mitigation Strategies
To mitigate this vulnerability, organizations should:
- Apply Security Patches: Ensure that all affected versions of Cisco Meeting Management are updated to the latest patched versions.
- Implement Strong Authentication: Enforce strong authentication mechanisms and limit the number of users with low-level privileges.
- Monitor API Activity: Implement monitoring and logging for API activity to detect and respond to suspicious behavior.
- Network Segmentation: Segment the network to limit the attack surface and reduce the impact of a successful exploit.
- Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and address potential weaknesses.
5. Impact on European Cybersecurity Landscape
The vulnerability poses a significant risk to organizations using Cisco Meeting Management, particularly those in the European Union. The potential for privilege escalation to administrator level can lead to unauthorized access, data breaches, and disruption of services. This can have severe implications for data protection, compliance with GDPR, and overall cybersecurity posture. Organizations must prioritize patching and implementing robust security measures to mitigate the risk.
6. Technical Details for Security Professionals
Detection:
- Log Analysis: Review API logs for unusual activity, such as repeated requests to specific endpoints.
- Intrusion Detection Systems (IDS): Deploy IDS to monitor network traffic for signs of API abuse.
Response:
- Incident Response Plan: Develop and implement an incident response plan tailored to API-based attacks.
- Patch Management: Ensure a robust patch management process to quickly apply security updates.
Prevention:
- Access Controls: Implement strict access controls and role-based access control (RBAC) to limit privileges.
- API Security: Enforce secure coding practices and conduct regular security reviews of API endpoints.
References:
By addressing this vulnerability promptly and implementing the recommended mitigation strategies, organizations can significantly reduce the risk of exploitation and protect their critical assets.