CVE-2019-19910 : What You Need to Know
Discover the impact of CVE-2019-19910, a vulnerability in MediaWiki's MinervaNeue Skin allowing XSS attacks and IP address disclosure. Learn mitigation steps and preventive measures.
From November 5, 2019, to December 13, 2019, a vulnerability in the MinervaNeue Skin of MediaWiki versions 1.35 and/or 1.34 allowed for potential cross-site scripting (XSS) attacks and disclosure of client IP addresses.
Understanding CVE-2019-19910
This CVE relates to a mishandling of HTML attributes in MediaWiki's MinervaNeue Skin, leading to security risks.
What is CVE-2019-19910?
The vulnerability in MediaWiki's MinervaNeue Skin allowed for XSS through the 'onmouseover' attribute in the 'IMG' tag and IP address disclosure via the 'src' attribute with an 'http' value.
The Impact of CVE-2019-19910
The vulnerability specifically affected talk page topical headers when viewed on mobile devices within the MobileFrontend context.
Technical Details of CVE-2019-19910
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The MinervaNeue Skin in MediaWiki mishandled certain HTML attributes, enabling XSS and IP address disclosure.
Affected Systems and Versions
- MediaWiki versions 1.35 and/or 1.34
Exploitation Mechanism
- Exploitation through the 'onmouseover' attribute in the 'IMG' tag for XSS
- IP address disclosure via the 'src' attribute with an 'http' value
Mitigation and Prevention
Protecting systems from CVE-2019-19910 is crucial for maintaining security.
Immediate Steps to Take
- Update MediaWiki to patched versions
- Implement web application firewalls
- Monitor and filter input data
Long-Term Security Practices
- Regular security audits and code reviews
- Employee security awareness training
- Stay informed about security best practices
Patching and Updates
- Apply security patches promptly
- Stay updated on security advisories and alerts