CVE-2022-41948 : Security Advisory and Response

A privilege escalation vulnerability has been identified in DHIS 2, an open-source information system. Attackers with the user admin role can exploit this flaw to assign superuser privileges to themselves. This article provides insights into CVE-2022-41948, its impact, technical details, and mitigation steps.

Understanding CVE-2022-41948

DHIS 2, a system for data management, faces a privilege chaining issue that allows users to elevate their privileges through a crafted HTTP PUT request.

What is CVE-2022-41948?

The vulnerability in DHIS 2 enables users with the user admin role to grant themselves superuser privileges, bypassing normal access controls. This poses a risk of unauthorized data manipulation and system compromise.

The Impact of CVE-2022-41948

Users exploiting this vulnerability can gain unauthorized access to sensitive data, compromise system integrity, and perform malicious actions within DHIS 2. It is crucial to address this issue promptly to prevent security breaches.

Technical Details of CVE-2022-41948

The technical aspects of CVE-2022-41948 provide insights into the vulnerability, affected systems, and how attackers can exploit the flaw.

Vulnerability Description

The flaw allows users with the user admin role in DHIS 2 to escalate their privileges and gain superuser access, leading to unauthorized data manipulation and system compromise.

Affected Systems and Versions

DHIS 2 versions prior to 2.36.12.1, 2.37.8.1, 2.38.2.1, and 2.39.0.1 are affected by this vulnerability. Users running these versions are urged to apply the provided hotfix releases.

Exploitation Mechanism

Attackers with the user admin authority can exploit this vulnerability by crafting an HTTP PUT request to assign themselves superuser privileges, circumventing access controls.

Mitigation and Prevention

Addressing CVE-2022-41948 requires immediate action to secure DHIS 2 installations and prevent unauthorized privilege escalation.

Immediate Steps to Take

DHIS2 administrators should upgrade to hotfix releases 2.36.12.1, 2.37.8.1, 2.38.2.1, or 2.39.0.1 to mitigate the vulnerability. Avoid assigning user management authority until the patch is applied.

Long-Term Security Practices

Regularly update DHIS 2 to the latest versions, monitor user roles and permissions, conduct security assessments, and educate users on best security practices.

Patching and Updates

Stay informed about security advisories for DHIS 2, apply patches promptly, and maintain a proactive approach to cybersecurity to prevent potential exploits.