CVE-2020-3308 : Security Advisory and Response

A vulnerability in the Image Signature Verification feature of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker to install a malicious software patch on an affected device.

Understanding CVE-2020-3308

This CVE involves a vulnerability in Cisco Firepower Threat Defense (FTD) Software that could be exploited by an attacker with administrator-level credentials.

What is CVE-2020-3308?

The vulnerability in the Image Signature Verification feature of Cisco Firepower Threat Defense (FTD) Software allows an attacker to install a malicious software patch on an affected device by bypassing signature checks.

The Impact of CVE-2020-3308

CVSS Base Score: 4.9 (Medium Severity)
Attack Vector: Network
Integrity Impact: High
An attacker could potentially boot a malicious software patch image on the affected device.

Technical Details of CVE-2020-3308

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability is a result of improper verification of digital signatures for patch images in Cisco Firepower Threat Defense (FTD) Software.

Affected Systems and Versions

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

Exploitation Mechanism

An attacker with administrator-level credentials can craft an unsigned software patch to bypass signature checks and load it on an affected device.

Mitigation and Prevention

Steps to address and prevent exploitation of the vulnerability.

Immediate Steps to Take

Apply vendor patches or updates promptly.
Monitor Cisco's security advisories for any relevant information.

Long-Term Security Practices

Regularly review and update security policies.
Conduct security training for staff to enhance awareness.

Patching and Updates

Ensure timely installation of security patches provided by Cisco.