CVE-2021-33898 : Security Advisory and Response

Invoice Ninja before version 4.4.0 is susceptible to a vulnerability (CVE-2021-33898) due to an unsafe call to unserialize() in AccountRepository.php allowing potential remote code execution. Attackers could exploit this by hosting input at a specific HTTP site and gaining control over it.

Understanding CVE-2021-33898

This section dives into the details of the CVE-2021-33898 vulnerability.

What is CVE-2021-33898?

The vulnerability in Invoice Ninja before version 4.4.0 involves an insecure call to unserialize() function in AccountRepository.php. This flaw could be exploited for remote code execution by manipulating input from a specific HTTP site.

The Impact of CVE-2021-33898

If successfully exploited, attackers could execute arbitrary PHP classes leading to unauthorized remote code execution. This poses a serious risk to the security and integrity of affected systems and data.

Technical Details of CVE-2021-33898

Explore the technical specifics of the CVE-2021-33898 vulnerability.

Vulnerability Description

The vulnerability arises from the insecure usage of unserialize() in a certain context, potentially allowing remote code execution by malicious actors.

Affected Systems and Versions

Invoice Ninja versions before 4.4.0 are confirmed to be impacted by this vulnerability, exposing them to the risk of remote code execution attacks.

Exploitation Mechanism

Attackers can exploit this vulnerability by providing manipulated input from a specific HTTP site, enabling the execution of arbitrary PHP classes on the targeted system.

Mitigation and Prevention

Learn about the steps to mitigate the risks associated with CVE-2021-33898.

Immediate Steps to Take

Users of affected versions are advised to update to version 4.4.0 or above to eliminate the vulnerability and prevent potential attacks.

Long-Term Security Practices

Implement secure coding practices, input validation mechanisms, and regularly update software components to enhance overall system security.

Patching and Updates

Stay informed about security patches and updates released by Invoice Ninja to address known vulnerabilities and strengthen the security posture of the application.