Description
A vulnerability in the Java Remote Method Invocation (RMI) process of Cisco Unified CCX could allow an unauthenticated, remote attacker to upload arbitrary files and execute arbitrary commands with root permissions on an affected system. This vulnerability is due to improper authentication mechanisms that are associated to specific Cisco Unified CCX features. An attacker could exploit this vulnerability by uploading a crafted file to an affected system through the Java RMI process. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system and elevate privileges to root.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-37892
1. Vulnerability Assessment and Severity Evaluation
Vulnerability Description: The vulnerability in the Java Remote Method Invocation (RMI) process of Cisco Unified Contact Center Express (UCCX) allows an unauthenticated, remote attacker to upload arbitrary files and execute arbitrary commands with root permissions on the affected system. This vulnerability arises from improper authentication mechanisms associated with specific Cisco UCCX features.
Severity Evaluation:
- Base Score: 9.8
- Base Score Version: 3.1
- Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The CVSS score of 9.8 indicates a critical vulnerability. The high severity is due to the following factors:
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): High (H)
- Integrity (I): High (H)
- Availability (A): High (H)
This vulnerability poses a significant risk as it can be exploited remotely without any user interaction, leading to complete system compromise.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Remote Exploitation: An attacker can exploit this vulnerability over the network without needing to be on the same local network.
- Unauthenticated Access: The attacker does not require any credentials to exploit the vulnerability.
Exploitation Methods:
- File Upload: The attacker can upload a crafted file through the Java RMI process.
- Command Execution: Once the file is uploaded, the attacker can execute arbitrary commands on the underlying operating system.
- Privilege Escalation: The executed commands can elevate the attacker's privileges to root, allowing full control over the system.
3. Affected Systems and Software Versions
The vulnerability affects multiple versions of Cisco Unified Contact Center Express (UCCX):
- 12.5(1)_SU02_ES01
- 12.0(1)
- 11.6(2)ES02
- 11.0(1)SU1ES03
- 10.6(1)SU3ES01
- 12.5(1)_SU03_ES05
- 11.6(2)ES04
- 10.5(1)SU1ES10
- 11.6(2)ES01
- 12.5(1)_SU02_ES02
- 12.5(1)_SU03_ES03
- 12.5(1)_SU03_ES01
- 10.5(1)
- 11.6(2)
- 12.5(1)_SU03_ES04
- 12.0(1)ES03
- 12.0(1)ES02
- 12.5(1)_SU01_ES03
- UCCX 15.0.1
- 12.0(1)ES01
- 11.5(1)ES01
- 12.5(1)_SU02_ES03
- 10.6(1)SU2ES04
- 12.5(1)ES02
- 10.6(1)SU3ES02
- 12.5(1)ES03
- 11.6(2)ES05
- 11.6(2)ES08
- 12.5(1)_SU01_ES01
- 12.5(1)
- 10.6(1)SU3
- 10.6(1)
- 12.5(1)SU2
- 11.6(2)ES03
- 10.5(1)SU1
- 12.5(1)_SU02_ES04
- 11.6(1)
- 12.0(1)ES04
- 12.5(1)_SU03_ES02
- 11.0(1)SU1ES02
- 11.5(1)SU1
- 10.6(1)SU3ES03
- 11.6(1)ES01
- 12.5(1)SU1
- 11.5(1)SU1ES03
- 11.5(1)SU1ES02
- 10.6(1)SU2
- 11.0(1)SU1
- 12.5(1)_SU03_ES06
- 10.6(1)SU1
- 11.6(1)ES02
- 11.6(2)ES06
- 12.5(1)ES01
- 11.5(1)SU1ES01
- 12.5(1)SU3
- 12.5(1)_SU01_ES02
4. Recommended Mitigation Strategies
Immediate Actions:
- Patch Management: Apply the latest security patches provided by Cisco for the affected versions of UCCX.
- Network Segmentation: Isolate the affected systems from the broader network to limit potential attack vectors.
- Access Controls: Implement strict access controls and monitoring to detect any unauthorized access attempts.
Long-Term Strategies:
- Regular Audits: Conduct regular security audits and vulnerability assessments.
- Intrusion Detection: Deploy intrusion detection and prevention systems to monitor for suspicious activities.
- User Training: Educate users on the importance of security best practices and the risks associated with unauthenticated access.
5. Impact on European Cybersecurity Landscape
The vulnerability poses a significant threat to organizations using Cisco UCCX, particularly those in critical sectors such as finance, healthcare, and government. The potential for remote, unauthenticated exploitation leading to full system compromise can result in data breaches, service disruptions, and financial losses. This underscores the need for robust cybersecurity measures and timely patch management across the European Union.
6. Technical Details for Security Professionals
Detection:
- Log Analysis: Monitor system logs for any unusual file uploads or command executions.
- Network Traffic: Use network monitoring tools to detect anomalous traffic patterns indicative of exploitation attempts.
Response:
- Incident Response Plan: Have a well-defined incident response plan in place to quickly address any detected exploitation.
- Forensic Analysis: Conduct forensic analysis to understand the scope and impact of the attack, and to identify the attacker's methods.
Prevention:
- Firewall Rules: Implement firewall rules to restrict access to the Java RMI process.
- Endpoint Protection: Deploy endpoint protection solutions to detect and block malicious activities.
References:
By following these recommendations and maintaining a proactive security posture, organizations can significantly reduce the risk associated with this vulnerability.