CVE-2021-3457 : Vulnerability Insights and Analysis

An improper authorization handling flaw in Foreman allows authenticated local attackers to access and delete limited resources through the smart_proxy_shellhooks plugin. This flaw also leads to a denial of service on the Foreman server, posing a threat to system integrity and availability.

Understanding CVE-2021-3457

This CVE involves an improper authorization handling flaw in Foreman, specifically through the Shellhooks plugin for the smart-proxy, which enables unauthorized actions by Foreman clients.

What is CVE-2021-3457?

CVE-2021-3457 highlights a vulnerability in Foreman that allows authenticated local adversaries to manipulate resources beyond their permitted scope, ultimately impacting the integrity and availability of the system.

The Impact of CVE-2021-3457

The vulnerability permits attackers to execute actions limited to the Foreman Server, leading to unauthorized access, deletion of resources, and a denial of service on the server. The primary threat lies in compromising system integrity and availability.

Technical Details of CVE-2021-3457

This section covers the specific technical aspects of the CVE.

Vulnerability Description

The flaw in Foreman's Shellhooks plugin for the smart-proxy enables unauthorized actions by authenticated local attackers, resulting in resource manipulation and a denial of service on the server.

Affected Systems and Versions

The vulnerability impacts the smart_proxy_shellhooks version 0.9.2, exposing Foreman to unauthorized resource access and potential service disruption.

Exploitation Mechanism

Authenticated local attackers can exploit this vulnerability to gain unauthorized control over limited resources and disrupt the Foreman server's services.

Mitigation and Prevention

To address CVE-2021-3457, immediate steps and long-term security practices are crucial.

Immediate Steps to Take

Update the affected smart_proxy_shellhooks plugin to a secure version to mitigate the vulnerability.
Monitor and restrict user actions within Foreman to limit potential unauthorized access.

Long-Term Security Practices

Regularly review and patch Foreman and its associated plugins to address security vulnerabilities proactively.
Implement access controls and monitoring mechanisms to detect and prevent unauthorized activities.

Patching and Updates

Stay informed about security advisories from Foreman and apply patches promptly to maintain system security and integrity.