CVE-2019-16528 : Security Advisory and Response
Learn about CVE-2019-16528, a security flaw in the AbuseFilter extension for MediaWiki allowing unauthorized access to sensitive user data. Find mitigation steps here.
A vulnerability has been found in the AbuseFilter extension used by MediaWiki, allowing malicious individuals to access sensitive data.
Understanding CVE-2019-16528
This CVE identifies a security flaw in the AbuseFilter extension for MediaWiki, potentially compromising user data.
What is CVE-2019-16528?
- The vulnerability in the AbuseFilter extension enables unauthorized access to sensitive information, including deleted or suppressed usernames and summaries from the revision data of the AbuseLog.
- This security issue impacts versions REL1_32 and REL1_33 of the extension.
The Impact of CVE-2019-16528
- Attackers can exploit this vulnerability to retrieve confidential data, posing a risk to user privacy and security within MediaWiki instances.
Technical Details of CVE-2019-16528
This section delves into the technical aspects of the CVE.
Vulnerability Description
- The flaw resides in the includes/special/SpecialAbuseLog.php file, allowing attackers to extract sensitive details from the AbuseLog revision data.
Affected Systems and Versions
- Versions REL1_32 and REL1_33 of the AbuseFilter extension for MediaWiki are susceptible to this vulnerability.
Exploitation Mechanism
- Malicious actors can exploit the vulnerability by manipulating the SpecialAbuseLog.php file to gain unauthorized access to sensitive user data.
Mitigation and Prevention
Protecting systems from CVE-2019-16528 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update the AbuseFilter extension to a patched version that addresses the vulnerability.
- Monitor user activities and data access for any suspicious behavior.
Long-Term Security Practices
- Implement access controls and user permissions to restrict unauthorized data access.
- Regularly audit and review system logs for any unusual activities that may indicate a security breach.
Patching and Updates
- Apply security patches and updates provided by MediaWiki for the AbuseFilter extension to mitigate the vulnerability effectively.