CVE-2021-3846 Explained : Impact and Mitigation

A detailed overview of the CVE-2021-3846 vulnerability in firefly-iii/firefly-iii.

Understanding CVE-2021-3846

This section dives into the specifics of the vulnerability and its implications.

What is CVE-2021-3846?

firefly-iii/firefly-iii is susceptible to Unrestricted Upload of File with Dangerous Type, potentially leading to severe consequences.

The Impact of CVE-2021-3846

With a CVSS base score of 6.3 and a medium severity rating, the vulnerability poses a high risk to confidentiality, integrity, and availability.

Technical Details of CVE-2021-3846

Explore the technical aspects of the CVE-2021-3846 vulnerability.

Vulnerability Description

The vulnerability allows for the unrestricted upload of files with dangerous types, exposing the system to various security risks.

Affected Systems and Versions

firefly-iii/firefly-iii versions less than 5.6.2 are impacted by this vulnerability.

Exploitation Mechanism

The attack vector is local with high complexity, necessitating user interaction and high privileges.

Mitigation and Prevention

Discover the steps to mitigate the CVE-2021-3846 vulnerability and enhance system security.

Immediate Steps to Take

Users should update firefly-iii/firefly-iii to version 5.6.2 or above to prevent exploitation of this vulnerability.

Long-Term Security Practices

Implement robust file upload restrictions, user input validation, and regular security audits to fortify system defenses.

Patching and Updates

Stay informed about security patches and updates released by firefly-iii to address known vulnerabilities.