CVE-2020-3386 Explained : Impact and Mitigation
Learn about CVE-2020-3386, an improper authorization vulnerability in Cisco Data Center Network Manager (DCNM) allowing remote attackers to bypass API authorization and gain administrative privileges. Find mitigation steps and long-term security practices here.
A vulnerability in the REST API endpoint of Cisco Data Center Network Manager (DCNM) could allow an authenticated, remote attacker to bypass authorization on the API of an affected device.
Understanding CVE-2020-3386
This CVE involves an improper authorization vulnerability in Cisco Data Center Network Manager (DCNM) that could be exploited by an attacker with low-privileged credentials.
What is CVE-2020-3386?
The vulnerability in the REST API endpoint of Cisco DCNM allows a remote attacker with low-privileged access to bypass authorization on the API, potentially leading to unauthorized actions with administrative privileges.
The Impact of CVE-2020-3386
The vulnerability has a CVSS base score of 8.8, indicating a high severity level. If successfully exploited, an attacker could perform arbitrary actions through the REST API with administrative privileges.
Technical Details of CVE-2020-3386
This section provides more in-depth technical information about the CVE.
Vulnerability Description
The vulnerability is due to insufficient authorization of certain API functions in Cisco DCNM, allowing attackers to exploit it by sending crafted requests with low-privileged credentials.
Affected Systems and Versions
- Product: Cisco Data Center Network Manager
- Vendor: Cisco
- Affected Version: Not applicable
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- Confidentiality, Integrity, and Availability Impact: High
Mitigation and Prevention
To address CVE-2020-3386, follow these mitigation and prevention strategies:
Immediate Steps to Take
- Cisco recommends updating to a fixed software release.
- Restrict network access to the affected API.
- Monitor the system for any unauthorized access or actions.
Long-Term Security Practices
- Regularly review and update access control policies.
- Conduct security training for staff on best practices to prevent unauthorized access.
Patching and Updates
- Apply the latest patches and updates provided by Cisco to fix the vulnerability.