CVE-2019-15150 : What You Need to Know

A security vulnerability in the OAuth2 Client extension version prior to 0.4 for MediaWiki has been identified. This vulnerability is related to a CSRF (Cross-Site Request Forgery) issue.

Understanding CVE-2019-15150

This CVE involves a CSRF vulnerability in the OAuth2 Client extension before version 0.4 for MediaWiki.

What is CVE-2019-15150?

The vulnerability arises due to the callback function's failure to properly verify the OAuth2 state parameter, leading to a CSRF vulnerability.

The Impact of CVE-2019-15150

The vulnerability allows malicious actors to conduct Cross-Site Request Forgery attacks, potentially compromising the security and integrity of the affected systems.

Technical Details of CVE-2019-15150

This section provides detailed technical information about the CVE.

Vulnerability Description

The CSRF vulnerability in the OAuth2 Client extension version prior to 0.4 for MediaWiki stems from the inadequate verification of the OAuth2 state parameter in the callback function.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: All versions prior to 0.4

Exploitation Mechanism

The vulnerability can be exploited by attackers to perform CSRF attacks by manipulating the OAuth2 state parameter.

Mitigation and Prevention

Protecting systems from CVE-2019-15150 requires immediate action and long-term security measures.

Immediate Steps to Take

Update the OAuth2 Client extension to version 0.4 or newer to mitigate the vulnerability.
Monitor and restrict access to the affected systems to prevent unauthorized exploitation.

Long-Term Security Practices

Implement strict input validation mechanisms to prevent CSRF vulnerabilities.
Regularly update and patch software to address security flaws and enhance system security.

Patching and Updates

Apply patches and updates provided by the extension developer to address the CSRF vulnerability and enhance system security.