CVE-2019-7550 : What You Need to Know
Learn about CVE-2019-7550, a vulnerability in JForum 2.1.8 that allows unauthenticated attackers to determine user existence, potentially leading to information disclosure. Find mitigation steps here.
JForum 2.1.8 allows an unauthenticated attacker to determine if a user exists through the "create user" function, potentially leading to information disclosure.
Understanding CVE-2019-7550
What is CVE-2019-7550?
In JForum 2.1.8, an attacker can exploit the "create user" function to check if a user exists by sending a specific request, potentially revealing sensitive information.
The Impact of CVE-2019-7550
The vulnerability allows attackers to confirm the existence of users on the system, aiding in potential targeted attacks or information gathering.
Technical Details of CVE-2019-7550
Vulnerability Description
The flaw in JForum 2.1.8 enables attackers to verify user existence by triggering an error message response.
Affected Systems and Versions
- Product: JForum 2.1.8
- Versions: All
Exploitation Mechanism
- Attacker sends a register/check/username?username= request
- If the username exists, an error message "is already in use" is displayed
Mitigation and Prevention
Immediate Steps to Take
- Disable the "create user" function if not essential
- Regularly monitor user registration activities
Long-Term Security Practices
- Implement strong authentication mechanisms
- Conduct regular security assessments
Patching and Updates
- As the product is discontinued, consider migrating to a supported platform or custom solution