CVE-2020-3565 : What You Need to Know

A vulnerability in the TCP Intercept functionality of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured Access Control Policies and Service Polices on an affected system.

Understanding CVE-2020-3565

This CVE involves a security vulnerability in Cisco Firepower Threat Defense Software that could be exploited by attackers to bypass certain security policies.

What is CVE-2020-3565?

The vulnerability in the TCP Intercept feature of Cisco Firepower Threat Defense Software allows attackers to bypass Access Control Policies and Service Polices by manipulating traffic streams.

The Impact of CVE-2020-3565

The vulnerability could enable attackers to bypass security policies, potentially leading to unauthorized access or data leakage.

Technical Details of CVE-2020-3565

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability allows attackers to bypass configured security policies by exploiting the TCP Intercept functionality.

Affected Systems and Versions

Product: Cisco Firepower Threat Defense Software
Vendor: Cisco
Affected Version: Not applicable

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Base Score: 5.8 (Medium)
Integrity Impact: Low
Privileges Required: None
Scope: Changed
Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Mitigation and Prevention

Steps to address and prevent the CVE exploitation.

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Monitor network traffic for any suspicious activity.
Implement additional access controls to mitigate risks.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security assessments and audits periodically.
Educate users and IT staff on security best practices.

Patching and Updates

Check for security advisories from Cisco.
Apply recommended patches or updates to mitigate the vulnerability.