CVE-2020-29204: Cross-site Scripting in XXL-JOB
Summary
CVE-2020-29204: Cross-site Scripting in XXL-JOB. Affects com.xuxueli:xxl-job-core versions < 2.3.0. Fixed in 2.3.0. How to fix ↓
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Background
XXL-JOB is a package that provides job scheduling and task management capabilities. It is commonly used in Maven projects. This vulnerability affects XXL-JOB version 2.2.0. The package allows stored cross-site scripting (XSS) attacks to bypass the 20-character limit in the 'Add User' functionality. This vulnerability is present in the 'UserController.java' file located in the 'xxl-job-admin/src/main/java/com/xxl/job/admin/controller' directory.
Vulnerability Detail
The vulnerability allows an attacker to inject malicious scripts into the application, which can be executed by unsuspecting users. This can lead to various security issues, such as stealing sensitive information, performing unauthorized actions on behalf of the user, or manipulating the application's behavior. The vulnerability has a CVSS score of 6.1, indicating a moderate severity level.
How To Fix
Minimum fixed version
2.3.0
This is the first release that contains the fix.
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Workaround
As a temporary workaround, you can manually apply a patch to the affected file 'UserController.java'. The patch should include proper input validation and sanitization to prevent XSS attacks. Here is an example of a patch:
// Apply input validation and sanitization
String username = request.getParameter("username");
String sanitizedUsername = sanitizeInput(username);
// Store the sanitized username
storeUser(sanitizedUsername);
Conclusion
In conclusion, the XXL-JOB package version 2.2.0 is vulnerable to a stored XSS attack in the 'Add User' functionality. This can lead to various security risks, including unauthorized actions and data theft. To mitigate this vulnerability, it is recommended to upgrade to XXL-JOB version 2.3.0 or later. If you need further assistance or support in addressing this vulnerability, please contact DevNack.com.
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FAQ
XXL-JOB is a job scheduling and task management package commonly used in Maven projects. It provides a convenient way to manage and execute tasks in a distributed environment.
Cross-site scripting (XSS) is a type of security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. These scripts can be used to steal sensitive information, perform unauthorized actions, or manipulate the behavior of the application.
This vulnerability allows an attacker to bypass the 20-character limit in the 'Add User' functionality of XXL-JOB. By injecting malicious scripts, the attacker can execute them in the context of other users, potentially leading to various security issues.
The CVSS score of this vulnerability is 6.1, indicating a moderate severity level. It is important to address this vulnerability to prevent potential security breaches.
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References
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