CVE-2022-41947 : Vulnerability Insights and Analysis

A critical vulnerability (CVE-2022-41947) has been identified in DHIS 2, an open-source information system, that could potentially lead to a cross-site scripting (XSS) attack. This vulnerability stems from improper neutralization of input during web page generation, allowing an attacker to upload a file containing malicious JavaScript code.

Understanding CVE-2022-41947

This section provides insights into the nature and impact of the CVE-2022-41947 vulnerability.

What is CVE-2022-41947?

DHIS 2 allows authenticated users to upload files with embedded JavaScript. Exploiting this feature, malicious files can be crafted to execute XSS attacks when opened by other users, potentially compromising system security.

The Impact of CVE-2022-41947

The vulnerability poses a medium severity threat, with a CVSS v3.1 base score of 5.4. Attackers can manipulate the system through uploaded files, endangering confidentiality and integrity with low privileges required.

Technical Details of CVE-2022-41947

Explore the specific technical aspects and implications of CVE-2022-41947.

Vulnerability Description

The flaw lies in DHIS 2 allowing file uploads with JavaScript content. Uploading and opening a malicious file enables attackers to trigger XSS attacks, posing a significant risk to system security.

Affected Systems and Versions

DHIS 2 versions prior to 2.39.0.1 are vulnerable, including versions 2.36.12.1, 2.37.8.1, 2.38.2.1. Users of these versions are strongly advised to upgrade to the latest hotfix releases to mitigate the risk.

Exploitation Mechanism

The vulnerability is exploited by uploading files with embedded JavaScript, luring unsuspecting users to open these files and inadvertently running malicious scripts, paving the way for cross-site scripting attacks.

Mitigation and Prevention

Learn about the steps to mitigate the risks posed by CVE-2022-41947 and prevent potential attacks.

Immediate Steps to Take

Admins should promptly upgrade to the recommended hotfix releases 2.39.0.1, 2.38.2.1, 2.37.8.1, 2.36.12.1 to eliminate the vulnerability. For those unable to upgrade immediately, implementing Content Security Policy (CSP) rules as a temporary measure can restrict JavaScript execution.

Long-Term Security Practices

Ensuring regular system updates, security patches, and user awareness training are essential for maintaining the integrity and security of DHIS 2 systems. Implementing secure upload mechanisms and validating user inputs are crucial steps in preventing similar vulnerabilities.

Patching and Updates

DHIS 2 administrators must stay vigilant for security advisories and promptly apply patches and updates released by the vendor to address known vulnerabilities.