CVE-2020-20220 : What You Need to Know
Learn about CVE-2020-20220, a memory corruption vulnerability in Mikrotik RouterOs prior to stable 6.47, allowing a remote attacker to cause a Denial of Service. Find mitigation steps and prevention measures here.
Mikrotik RouterOs prior to stable 6.47 has a memory corruption vulnerability in the /nova/bin/bfd process, allowing an authenticated remote attacker to cause a Denial of Service (NULL pointer dereference).
Understanding CVE-2020-20220
This CVE involves a specific vulnerability in Mikrotik RouterOs that can lead to a Denial of Service attack.
What is CVE-2020-20220?
The vulnerability in Mikrotik RouterOs prior to stable 6.47 enables an authenticated remote attacker to trigger a Denial of Service by exploiting a memory corruption issue in the /nova/bin/bfd process.
The Impact of CVE-2020-20220
The exploitation of this vulnerability can result in a Denial of Service condition, potentially disrupting network operations and services.
Technical Details of CVE-2020-20220
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in Mikrotik RouterOs allows an authenticated remote attacker to exploit a memory corruption issue in the /nova/bin/bfd process, leading to a Denial of Service through a NULL pointer dereference.
Affected Systems and Versions
- Affected system: Mikrotik RouterOs prior to stable version 6.47
- Versions affected: All versions before 6.47
Exploitation Mechanism
The vulnerability can be exploited by an authenticated remote attacker to trigger a Denial of Service by manipulating the /nova/bin/bfd process.
Mitigation and Prevention
Protecting systems from CVE-2020-20220 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Mikrotik RouterOs to version 6.47 or newer to mitigate the vulnerability.
- Monitor network traffic for any suspicious activity that could indicate exploitation of the vulnerability.
Long-Term Security Practices
- Regularly update and patch all software and firmware to prevent known vulnerabilities.
- Implement strong authentication mechanisms to limit unauthorized access to network devices.
Patching and Updates
- Apply security patches provided by Mikrotik promptly to address vulnerabilities and enhance system security.