CVE-2020-20267 : Vulnerability Insights and Analysis
Learn about CVE-2020-20267, a memory corruption vulnerability in Mikrotik RouterOs before 6.47. Find out the impact, affected systems, exploitation details, and mitigation steps.
Mikrotik RouterOs before 6.47 (stable tree) has a memory corruption vulnerability in the /nova/bin/resolver process, allowing an authenticated remote attacker to trigger a Denial of Service due to invalid memory access.
Understanding CVE-2020-20267
This CVE involves a memory corruption vulnerability in Mikrotik RouterOs that can be exploited by an authenticated remote attacker to cause a Denial of Service.
What is CVE-2020-20267?
CVE-2020-20267 is a security vulnerability in Mikrotik RouterOs versions prior to 6.47 that enables an authenticated remote attacker to disrupt services by exploiting a memory corruption issue in the /nova/bin/resolver process.
The Impact of CVE-2020-20267
The vulnerability allows attackers to trigger a Denial of Service condition, potentially leading to service unavailability and disruption for affected systems.
Technical Details of CVE-2020-20267
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability in Mikrotik RouterOs before version 6.47 involves a memory corruption issue in the /nova/bin/resolver process, which can be abused by authenticated remote attackers.
Affected Systems and Versions
- Product: Mikrotik RouterOs
- Versions affected: Versions prior to 6.47
Exploitation Mechanism
An authenticated remote attacker can exploit this vulnerability to trigger a Denial of Service by performing invalid memory access.
Mitigation and Prevention
Protecting systems from CVE-2020-20267 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Mikrotik RouterOs to version 6.47 or later to mitigate the vulnerability.
- Monitor network traffic for any suspicious activity that could indicate exploitation attempts.
Long-Term Security Practices
- Implement strong authentication mechanisms to prevent unauthorized access.
- Regularly update and patch software to address known vulnerabilities.
Patching and Updates
Ensure timely installation of security patches and updates provided by Mikrotik to address CVE-2020-20267.