CVE-2020-3336 Explained : Impact and Mitigation
Learn about CVE-2020-3336, a high-severity vulnerability in Cisco TelePresence Collaboration Endpoint and RoomOS Software allowing attackers to cause DoS or gain privileged access. Find mitigation steps here.
A vulnerability in the software upgrade process of Cisco TelePresence Collaboration Endpoint Software and Cisco RoomOS Software could allow an authenticated, remote attacker to modify the filesystem to cause a denial of service (DoS) or gain privileged access to the root filesystem.
Understanding CVE-2020-3336
This CVE involves a command injection vulnerability in Cisco TelePresence Collaboration Endpoint and RoomOS Software.
What is CVE-2020-3336?
The vulnerability allows an attacker to manipulate the filesystem, leading to DoS or unauthorized access due to insufficient input validation.
The Impact of CVE-2020-3336
- High Severity: CVSS base score of 7.2 (High severity) with significant impacts on confidentiality, integrity, and availability.
- Attackers with administrative privileges can exploit the vulnerability to modify device configurations or cause a DoS.
Technical Details of CVE-2020-3336
This section provides detailed technical information about the vulnerability.
Vulnerability Description
- The flaw lies in the software upgrade process, enabling attackers to send malformed requests via console, SSH, or web API.
Affected Systems and Versions
- Affected Systems: Cisco TelePresence CE Software
- Affected Versions: Not applicable (n/a)
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: High
- User Interaction: None
- Scope: Unchanged
- Exploitation can occur through malformed parameters sent to the system using console, SSH, or web API.
Mitigation and Prevention
Protect your systems from CVE-2020-3336 with the following steps:
Immediate Steps to Take
- Apply vendor patches and updates promptly.
- Monitor system logs for any suspicious activities.
- Restrict access to vulnerable systems.
Long-Term Security Practices
- Regularly update and patch software to address vulnerabilities.
- Conduct security training for staff to recognize and report potential threats.
Patching and Updates
- Stay informed about security advisories from Cisco.
- Implement a robust patch management process to ensure timely updates.