CVE-2022-47927 : Vulnerability Insights and Analysis

MediaWiki before versions 1.35.9, 1.36.x through 1.38.x before 1.38.5, and 1.39.x before 1.39.1 are affected by a vulnerability that creates SQLite files with weak permissions, exposing credentials data.

Understanding CVE-2022-47927

This article delves into the details of CVE-2022-47927, highlighting its impact, technical aspects, and mitigation strategies.

What is CVE-2022-47927?

An issue in MediaWiki versions prior to 1.39.1 allows SQLite files to be created with incorrect permissions, making credential data world-readable to local users.

The Impact of CVE-2022-47927

The vulnerability poses a risk of unauthorized access to sensitive credential information stored in SQLite files, compromising data confidentiality.

Technical Details of CVE-2022-47927

Learn more about the specifics of the vulnerability, affected systems, and how it can be exploited.

Vulnerability Description

During installation with existing data directories of weak permissions, MediaWiki creates SQLite files with incorrect file mode (0644), potentially exposing credentials.

Affected Systems and Versions

MediaWiki versions prior to 1.35.9, 1.36.x through 1.38.5, and 1.39.1 are impacted by this vulnerability, especially in installations with pre-existing data directories.

Exploitation Mechanism

Local users with access to the SQLite files created during installation can read sensitive credential data, leading to unauthorized disclosure.

Mitigation and Prevention

Explore the immediate steps to enhance security and prevent exploitation of CVE-2022-47927.

Immediate Steps to Take

Ensure proper file permissions on the data directory and SQLite files to restrict access and protect sensitive credentials.

Long-Term Security Practices

Regularly review and update file permissions, conduct security audits, and monitor file access to prevent unauthorized disclosure of data.

Patching and Updates

Update MediaWiki to versions 1.35.9, 1.38.5, or 1.39.1 to address the vulnerability and prevent credential exposure through SQLite files.