CVE-2020-3305 : What You Need to Know

A vulnerability in the implementation of the Border Gateway Protocol (BGP) module in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

Understanding CVE-2020-3305

This CVE involves a vulnerability in Cisco ASA and FTD Software that could lead to a DoS attack.

What is CVE-2020-3305?

The vulnerability arises from incorrect processing of specific BGP packets, enabling attackers to trigger a DoS condition by sending a crafted BGP packet.

The Impact of CVE-2020-3305

The vulnerability has a CVSS base score of 6.8, indicating a medium severity issue with a high impact on availability. It does not affect confidentiality or integrity but can lead to a DoS condition.

Technical Details of CVE-2020-3305

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in BGP module processing in Cisco ASA and FTD Software allows unauthenticated remote attackers to exploit the flaw and cause a DoS condition.

Affected Systems and Versions

Product: Cisco Adaptive Security Appliance (ASA) Software
Vendor: Cisco
Versions affected: Not applicable (n/a)

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specifically crafted BGP packet, leading to a DoS condition on the targeted device.

Mitigation and Prevention

Protecting systems from CVE-2020-3305 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Monitor network traffic for any signs of exploitation.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Conduct security assessments and penetration testing to identify vulnerabilities.
Educate users and IT staff on best security practices.

Patching and Updates

Cisco has likely released patches or updates to address this vulnerability. Ensure timely installation of these fixes to mitigate the risk of exploitation.