CVE-2019-9142: XSS Vulnerability in org.b3log:symphony
Summary
CVE-2019-9142: Moderate severity vulnerability that affects org.b3log:symphony. Affects org.b3log:symphony versions < 3.4.7. Fixed in 3.4.7. How to fix ↓
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Background
org.b3log Symphony (aka Sym) is an open-source content management system (CMS) written in Java. It provides a platform for building and managing websites, blogs, and forums. Symphony allows users to create and customize their websites using various themes and plugins. However, a vulnerability has been discovered in Symphony versions prior to v3.4.7 that exposes users to cross-site scripting (XSS) attacks.
Vulnerability Detail
The vulnerability, identified as CVE-2019-9142, originates from the userIntro and userNickname fields in the processor/SettingsProcessor.java file. These fields are not properly sanitized, allowing malicious users to inject arbitrary JavaScript code into the Symphony application. This XSS vulnerability can lead to various security risks, including session hijacking, defacement of web pages, and theft of sensitive user information.
How To Fix
Minimum fixed version
3.4.7
This is the first release that contains the fix.
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Workaround
If upgrading to Symphony version 3.4.7 is not immediately feasible, a temporary workaround can be implemented by manually sanitizing the userIntro and userNickname fields in the processor/SettingsProcessor.java file. This can be achieved by using a robust HTML sanitization library or implementing custom input validation and filtering mechanisms. It is crucial to thoroughly test the workaround to ensure it effectively mitigates the XSS vulnerability.
Conclusion
The XSS vulnerability in org.b3log Symphony (aka Sym) versions prior to 3.4.7 poses a significant security risk. It is crucial to upgrade to the latest version or apply the recommended workaround to mitigate the vulnerability. For further assistance and support in addressing this vulnerability, please contact DevNack.com.
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FAQ
The vulnerability allows attackers to inject malicious JavaScript code into Symphony, potentially leading to unauthorized access, data theft, and website defacement.
While there are no known public exploits at the moment, it is essential to address this vulnerability promptly to prevent potential attacks.
No, only versions prior to 3.4.7 are affected. Upgrading to the latest version will mitigate the vulnerability.
Yes, this vulnerability can be exploited remotely by attackers who can submit malicious input to the userIntro and userNickname fields.
Yes, the CVSS score for this vulnerability is 6.1, indicating a moderate severity level.
