CVE-2018-10070 : What You Need to Know

CVE-2018-10070 involves a vulnerability in MikroTik Version 6.41.4 that could allow an unauthorized remote attacker to exhaust CPU and RAM resources, leading to a denial-of-service condition.

Understanding CVE-2018-10070

What is CVE-2018-10070?

The exploit in MikroTik Version 6.41.4 enables an external attacker to deplete a device's CPU and RAM by sending a specially crafted FTP request through port 21, causing the router to restart automatically.

The Impact of CVE-2018-10070

The vulnerability allows attackers to disrupt network operations by overwhelming the affected router's resources, potentially leading to downtime and service interruptions.

Technical Details of CVE-2018-10070

Vulnerability Description

The flaw in MikroTik Version 6.41.4 permits attackers to hinder the router's ability to accept new FTP connections by flooding it with a specific FTP request, triggering an automatic restart.

Affected Systems and Versions

Affected Version: 6.41.4

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a carefully designed FTP request with numerous '\0' characters at the beginning through port 21, causing resource exhaustion and router restart.

Mitigation and Prevention

Immediate Steps to Take

Disable FTP service if not required to mitigate the risk of exploitation.
Implement firewall rules to restrict access to FTP services.
Regularly monitor network traffic for any unusual FTP requests.

Long-Term Security Practices

Keep systems up to date with the latest security patches and firmware updates.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.

Patching and Updates

Ensure that MikroTik routers are updated to the latest firmware version to patch the vulnerability and prevent exploitation.