CVE-2020-3195 : What You Need to Know

A vulnerability in the Open Shortest Path First (OSPF) implementation in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a memory leak on an affected device.

Understanding CVE-2020-3195

This CVE involves a memory leak vulnerability in Cisco ASA and FTD Software due to incorrect processing of OSPF packets.

What is CVE-2020-3195?

The vulnerability allows an attacker to send crafted OSPF packets to consume memory on the device, leading to a denial of service condition.

The Impact of CVE-2020-3195

CVSS Base Score: 8.6 (High)
Attack Vector: Network
Availability Impact: High
Successful exploitation can cause affected devices to reload, resulting in a DoS condition.

Technical Details of CVE-2020-3195

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in OSPF implementation allows attackers to trigger a memory leak by sending malicious OSPF packets.

Affected Systems and Versions

Affected Systems: Cisco Adaptive Security Appliance (ASA) Software, Cisco Firepower Threat Defense (FTD) Software
Affected Version: Not Applicable

Exploitation Mechanism

Attackers can exploit the vulnerability by sending a series of crafted OSPF packets to the affected device, causing memory consumption and device reload.

Mitigation and Prevention

Protecting systems from CVE-2020-3195 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor patches and updates promptly.
Monitor network traffic for any signs of malicious OSPF packets.

Long-Term Security Practices

Implement network segmentation to contain potential attacks.
Regularly update and patch all software and firmware.

Patching and Updates

Cisco has released patches to address the vulnerability.
Regularly check for updates and apply them to mitigate the risk of exploitation.