CVE-2021-1518 : Security Advisory and Response

A detailed overview of CVE-2021-1518, a vulnerability impacting Cisco Firepower Device Manager On-Box Software with the potential for remote code execution.

Understanding CVE-2021-1518

This section covers what CVE-2021-1518 entails, its impact, technical details, and mitigation strategies.

What is CVE-2021-1518?

The vulnerability lies in the REST API of Cisco Firepower Device Manager (FDM) On-Box Software, enabling a remote attacker to execute arbitrary code on the affected device's underlying OS.

The Impact of CVE-2021-1518

The vulnerability's impact is significant, allowing attackers to exploit insufficient input sanitization on specific API commands to execute unauthorized code with low-privileged credentials.

Technical Details of CVE-2021-1518

A deeper dive into the technical aspects of the vulnerability.

Vulnerability Description

The flaw results from inadequate user input validation within specific REST API commands, enabling attackers to send crafted HTTP requests to execute malicious code.

Affected Systems and Versions

The Cisco Firepower Threat Defense Software by Cisco is affected by this vulnerability.

Exploitation Mechanism

Attackers can leverage the vulnerability by sending malicious HTTP requests through the API subsystem, exploiting the lack of input sanitization.

Mitigation and Prevention

How to address and prevent the exploitation of CVE-2021-1518.

Immediate Steps to Take

Immediately apply relevant patches, restrict access to essential systems, and closely monitor network activities for signs of exploitation.

Long-Term Security Practices

Enhance security measures through regular security training, network segmentation, and periodic security assessments.

Patching and Updates

Regularly update software and firmware to integrate the latest security patches and protect against known vulnerabilities.