CVE-2020-3216 Explained : Impact and Mitigation
Learn about CVE-2020-3216, a vulnerability in Cisco IOS XE SD-WAN Software that allows unauthenticated attackers to gain root shell access. Find mitigation steps and preventive measures here.
A vulnerability in Cisco IOS XE SD-WAN Software allows an unauthenticated attacker to bypass authentication and gain root shell access.
Understanding CVE-2020-3216
This CVE involves an authentication bypass vulnerability in Cisco IOS XE SD-WAN Software.
What is CVE-2020-3216?
The vulnerability enables a physical attacker to bypass authentication and gain unrestricted access to the root shell of an affected device due to insufficient authentication mechanisms.
The Impact of CVE-2020-3216
- CVSS Base Score: 6.8 (Medium Severity)
- Attack Vector: Physical
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
Technical Details of CVE-2020-3216
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability allows attackers to stop the boot initialization of an affected device, leading to unauthorized access to the root shell.
Affected Systems and Versions
- Affected Product: Cisco IOS XE SD-WAN Software
- Affected Version: Not applicable
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating the boot initialization process of the device.
Mitigation and Prevention
To address CVE-2020-3216, follow these mitigation strategies:
Immediate Steps to Take
- Implement the recommended patches from Cisco.
- Monitor network traffic for any suspicious activity.
- Restrict physical access to vulnerable devices.
Long-Term Security Practices
- Regularly update and patch all software and firmware.
- Conduct security training for employees to recognize and report potential security threats.
Patching and Updates
Apply the latest security updates and patches provided by Cisco to mitigate the vulnerability.