CVE-2021-30158 : Security Advisory and Response
Discover the impact and technical details of CVE-2021-30158 affecting MediaWiki versions before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Learn about mitigation steps and preventive measures.
An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Blocked users are unable to use Special:ResetTokens. This has security relevance because a blocked user might have accidentally shared a token, or might know that a token has been compromised, and yet is not able to block any potential future use of the token by an unauthorized party.
Understanding CVE-2021-30158
This section will provide insights into the vulnerability and its impact.
What is CVE-2021-30158?
CVE-2021-30158 is a security vulnerability discovered in MediaWiki versions prior to 1.31.12 and 1.32.x through 1.35.x before 1.35.2 that affects the functionality of blocked users in using Special:ResetTokens, potentially leading to token compromise.
The Impact of CVE-2021-30158
The impact of this vulnerability is significant as it hampers the ability of blocked users to secure compromised tokens, leaving them vulnerable to unauthorized parties.
Technical Details of CVE-2021-30158
This section will delve into the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability prevents blocked users from utilizing Special:ResetTokens, posing a risk of compromised tokens remaining accessible to unauthorized parties.
Affected Systems and Versions
MediaWiki versions before 1.31.12 and 1.32.x through 1.35.x before 1.35.2 are affected by CVE-2021-30158.
Exploitation Mechanism
Exploiting this vulnerability requires knowledge of the issue and the ability to block the use of compromised tokens.
Mitigation and Prevention
Learn how to mitigate the risks posed by CVE-2021-30158.
Immediate Steps to Take
Users are advised to update MediaWiki to version 1.31.12 or 1.35.2 to address this vulnerability.
Long-Term Security Practices
Adopting robust security practices and regular software updates can prevent similar vulnerabilities.
Patching and Updates
Stay informed about security patches and updates released by MediaWiki to ensure the ongoing protection of your systems.