CVE-2019-12468 : Security Advisory and Response
Learn about CVE-2019-12468, an access control vulnerability in Wikimedia MediaWiki versions 1.27.0 through 1.32.1 allowing unauthorized access to user accounts. Find mitigation steps and preventive measures.
A vulnerability related to access control in Wikimedia MediaWiki versions 1.27.0 through 1.32.1 allows potential unauthorized access to user accounts.
Understanding CVE-2019-12468
A security flaw in Wikimedia MediaWiki versions 1.27.0 through 1.32.1 enables attackers to bypass re-authentication, leading to unauthorized access to user accounts.
What is CVE-2019-12468?
This CVE identifies an Incorrect Access Control vulnerability in Wikimedia MediaWiki versions 1.27.0 through 1.32.1. By sending a POST request to Special:ChangeEmail, attackers can circumvent the re-authentication process, potentially gaining unauthorized access to user accounts.
The Impact of CVE-2019-12468
The vulnerability allows malicious actors to exploit the access control issue, potentially leading to unauthorized access to user accounts and sensitive information stored within Wikimedia MediaWiki.
Technical Details of CVE-2019-12468
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability in Wikimedia MediaWiki versions 1.27.0 through 1.32.1 allows attackers to bypass re-authentication by sending a POST request to Special:ChangeEmail, potentially resulting in unauthorized access to user accounts.
Affected Systems and Versions
- Affected Versions: 1.27.0 through 1.32.1
- Systems: Wikimedia MediaWiki
Exploitation Mechanism
Attackers exploit the vulnerability by directly sending a POST request to Special:ChangeEmail, bypassing the re-authentication process and gaining unauthorized access to user accounts.
Mitigation and Prevention
Protecting systems from CVE-2019-12468 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Wikimedia MediaWiki to a patched version that addresses the access control vulnerability.
- Monitor user account activities for any unauthorized access.
Long-Term Security Practices
- Implement multi-factor authentication to enhance access control security.
- Regularly audit and review access control mechanisms within Wikimedia MediaWiki.
Patching and Updates
- Apply security patches provided by Wikimedia to fix the access control vulnerability in affected versions.