CVE-2021-4119 : Exploit Details and Defense Strategies

A detailed overview of the CVE-2021-4119 vulnerability in bookstackapp/bookstack.

Understanding CVE-2021-4119

In this section, we will explore the impact, technical details, and mitigation strategies related to the Improper Access Control vulnerability in bookstackapp/bookstack.

What is CVE-2021-4119?

The CVE-2021-4119 vulnerability is related to Improper Access Control in bookstackapp/bookstack, allowing unauthorized access to certain resources.

The Impact of CVE-2021-4119

With a CVSS base score of 5.3, this Medium-severity vulnerability poses a risk of unauthorized access to sensitive information with low confidentiality impact.

Technical Details of CVE-2021-4119

Let's dive deeper into the vulnerability's description, affected systems, and the exploitation mechanism.

Vulnerability Description

bookstackapp/bookstack is susceptible to Improper Access Control, potentially leading to unauthorized access to protected resources.

Affected Systems and Versions

The vulnerability affects custom versions of bookstackapp/bookstack that are less than 21.11.3.

Exploitation Mechanism

Attackers can exploit this vulnerability over a network with low complexity, posing a medium-severity risk.

Mitigation and Prevention

Explore immediate steps and long-term security practices to mitigate the risks associated with CVE-2021-4119.

Immediate Steps to Take

Administrators should promptly update bookstackapp/bookstack to version 21.11.3 or above to address the Improper Access Control vulnerability.

Long-Term Security Practices

Implement robust access control mechanisms and regular security assessments to prevent unauthorized access to sensitive data.

Patching and Updates

Stay informed about security patches and updates released by bookstackapp to address vulnerabilities like CVE-2021-4119.