CVE-2020-20252 : Vulnerability Insights and Analysis
Learn about CVE-2020-20252, a vulnerability in Mikrotik RouterOs before version 6.47 allowing an authenticated remote attacker to cause a Denial of Service. Find out how to mitigate and prevent exploitation.
Mikrotik RouterOs before stable version 6.47 has a memory corruption vulnerability in the /nova/bin/lcdstat process, allowing an authenticated remote attacker to trigger a Denial of Service (NULL pointer dereference).
Understanding CVE-2020-20252
This CVE involves a specific vulnerability in Mikrotik RouterOs that can be exploited by an authenticated remote attacker.
What is CVE-2020-20252?
The vulnerability in Mikrotik RouterOs before version 6.47 enables an attacker to cause a Denial of Service by exploiting a memory corruption issue in the /nova/bin/lcdstat process.
The Impact of CVE-2020-20252
The exploitation of this vulnerability can lead to a Denial of Service condition, potentially disrupting the normal operation of affected systems.
Technical Details of CVE-2020-20252
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability in Mikrotik RouterOs before version 6.47 is due to a memory corruption issue in the /nova/bin/lcdstat process, which can be abused by an authenticated remote attacker.
Affected Systems and Versions
- Affected: Mikrotik RouterOs versions before 6.47
- Not affected: Stable version 6.47 and above
Exploitation Mechanism
An authenticated remote attacker can exploit this vulnerability to trigger a Denial of Service by causing a NULL pointer dereference.
Mitigation and Prevention
Protecting systems from CVE-2020-20252 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.
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 the system.
Patching and Updates
- Apply security patches provided by Mikrotik promptly to address vulnerabilities and enhance system security.