CVE-2020-29204 : Exploit Details and Defense Strategies

XXL-JOB 2.2.0 allows Stored XSS (in Add User) to bypass the 20-character limit via xxl-job-admin/src/main/java/com/xxl/job/admin/controller/UserController.java.

Understanding CVE-2020-29204

This CVE involves a vulnerability in XXL-JOB 2.2.0 that enables Stored XSS to circumvent the 20-character restriction.

What is CVE-2020-29204?

Stored XSS vulnerability in XXL-JOB 2.2.0 allows attackers to exceed the 20-character limit in the Add User function.

The Impact of CVE-2020-29204

The vulnerability could be exploited by malicious actors to execute arbitrary scripts, potentially leading to unauthorized actions.

Technical Details of CVE-2020-29204

XXL-JOB 2.2.0 vulnerability details and affected systems.

Vulnerability Description

Stored XSS in Add User function bypasses the 20-character limit in XXL-JOB 2.2.0.

Affected Systems and Versions

Product: XXL-JOB 2.2.0
Vendor: N/A
Version: N/A

Exploitation Mechanism

Attackers can inject malicious scripts exceeding the 20-character limit via the UserController.java file.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2020-29204.

Immediate Steps to Take

Implement input validation to restrict user input length.
Regularly monitor and audit user inputs for suspicious activities.
Apply security patches and updates promptly.

Long-Term Security Practices

Conduct regular security training for developers on secure coding practices.
Employ web application firewalls to filter and block malicious traffic.

Patching and Updates

Stay informed about security advisories and updates from XXL-JOB.
Apply patches provided by XXL-JOB to address the vulnerability.