CVE-2020-27131 Explained : Impact and Mitigation
Learn about CVE-2020-27131 affecting Cisco Security Manager. Discover the impact, affected systems, exploitation mechanism, and mitigation steps to secure your network.
Multiple vulnerabilities in the Java deserialization function used by Cisco Security Manager could allow remote attackers to execute arbitrary commands on affected devices.
Understanding CVE-2020-27131
Cisco Security Manager Java Deserialization Vulnerabilities
What is CVE-2020-27131?
These vulnerabilities stem from insecure deserialization of user-supplied content by the affected software, enabling attackers to send malicious serialized Java objects to execute commands on the device.
The Impact of CVE-2020-27131
- Attack Complexity: High
- Attack Vector: Network
- Confidentiality, Integrity, and Availability Impact: High
- Privileges Required: None
- Scope: Unchanged
- CVSS Base Score: 8.1 (High)
Technical Details of CVE-2020-27131
Vulnerability Description
- Unauthenticated, remote attackers can execute arbitrary commands on affected devices.
Affected Systems and Versions
- Product: Cisco Security Manager
- Vendor: Cisco
- Versions: Not applicable
Exploitation Mechanism
- Attackers exploit insecure deserialization by sending malicious Java objects to a specific listener on the system.
Mitigation and Prevention
Immediate Steps to Take
- Implement network segmentation to limit exposure.
- Monitor network traffic for signs of malicious activity.
- Apply firewall rules to restrict access to vulnerable systems.
Long-Term Security Practices
- Regularly update software and apply patches promptly.
- Conduct security assessments and audits to identify vulnerabilities.
- Educate users on safe practices to prevent social engineering attacks.
Patching and Updates
- Cisco has not released software updates addressing these vulnerabilities.