CVE-2021-31552 : Vulnerability Insights and Analysis
Discover the impact of CVE-2021-31552, a vulnerability in the AbuseFilter extension for MediaWiki versions through 1.35.2. Learn about affected systems, exploitation mechanisms, and mitigation strategies.
An issue was discovered in the AbuseFilter extension for MediaWiki through 1.35.2. This vulnerability incorrectly executed certain rules related to blocking accounts after account creation, allowing user accounts to be created while only blocking the IP address used for account creation. A malicious unprivileged user could exploit this to identify multiple IP addresses linked to account creations.
Understanding CVE-2021-31552
This section provides insight into the nature and impact of the CVE-2021-31552 vulnerability.
What is CVE-2021-31552?
CVE-2021-31552 is a vulnerability in the AbuseFilter extension for MediaWiki versions through 1.35.2. It allows the creation of user accounts while blocking only the IP address used for the creation, making it possible for unauthorized users to track related IP addresses.
The Impact of CVE-2021-31552
The impact of this vulnerability is significant as it enables unauthorized users to circumvent account blocking measures and potentially gather sensitive information related to account creations.
Technical Details of CVE-2021-31552
Explore the technical aspects of CVE-2021-31552 to understand its implications better.
Vulnerability Description
The vulnerability in the AbuseFilter extension for MediaWiki through version 1.35.2 allows user accounts to be created while only blocking the IP address used for creation.
Affected Systems and Versions
MediaWiki versions up to 1.35.2 are affected by this vulnerability.
Exploitation Mechanism
A nefarious unprivileged user can exploit this issue within the AbuseFilter extension to catalog and enumerate IP addresses linked to account creations.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2021-31552 and prevent potential security breaches.
Immediate Steps to Take
System administrators should apply patches provided by MediaWiki to address the vulnerability promptly.
Long-Term Security Practices
Regularly monitor for updates and security advisories from MediaWiki to stay informed about potential vulnerabilities.
Patching and Updates
Ensure that MediaWiki is kept up to date with the latest security patches to prevent exploitation of known vulnerabilities.