CVE-2020-7465 : What You Need to Know

MPD before version 5.9 in FreeBSD PPP daemon is vulnerable to remote code execution or denial of service due to a flaw in the L2TP implementation.

Understanding CVE-2020-7465

This CVE involves a critical vulnerability in the L2TP implementation of MPD before version 5.9, allowing remote attackers to execute arbitrary code or trigger a denial of service attack.

What is CVE-2020-7465?

The vulnerability in MPD allows a remote attacker to exploit a flaw in the L2TP implementation by sending a specially crafted L2TP control packet with AVP Q.931 Cause Code.

The Impact of CVE-2020-7465

The exploitation of this vulnerability can lead to remote code execution or denial of service through memory corruption, posing a significant risk to affected systems.

Technical Details of CVE-2020-7465

MPD: FreeBSD PPP daemon before version 5.9 is susceptible to this vulnerability.

Vulnerability Description

The flaw in the L2TP implementation of MPD allows remote attackers to execute arbitrary code or cause a denial of service by sending a specific L2TP control packet.

Affected Systems and Versions

Product: MPD: FreeBSD PPP daemon
Vendor: n/a
Versions Affected: All versions prior to version 5.9

Exploitation Mechanism

The vulnerability can be exploited by sending a specially crafted L2TP control packet with AVP Q.931 Cause Code, triggering memory corruption.

Mitigation and Prevention

Immediate action and long-term security practices are crucial to mitigate the risks associated with CVE-2020-7465.

Immediate Steps to Take

Apply the latest security patches and updates provided by the vendor.
Monitor network traffic for any suspicious activity related to L2TP protocols.
Implement strong firewall rules to restrict unauthorized access.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify vulnerabilities.
Educate users and administrators about safe network practices and social engineering threats.

Patching and Updates

Update MPD to version 5.9 or newer to eliminate the vulnerability.