CVE-2015-9286: Cross-site Scripting in NodeBB
Summary
CVE-2015-9286: Cross-site Scripting in NodeBB. Affects nodebb versions < 0.8.2. Fixed in 0.8.2. How to fix ↓
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Background
NodeBB is an open-source forum software written in Node.js. It provides a platform for creating online communities and discussion boards. The software allows users to create topics, post replies, and engage in discussions. NodeBB is widely used and has a large user base. However, prior to version 0.7.3, NodeBB is vulnerable to a cross-site scripting (XSS) attack.
Vulnerability Detail
The vulnerability, identified as CVE-2015-9286, exists in the 'Controllers.outgoing' function within the 'controllers/index.js' file of NodeBB. This function is responsible for handling outgoing requests. The lack of proper input sanitization allows an attacker to inject malicious scripts into the outgoing data. When a user visits a page containing the vulnerable code, the injected script is executed in the context of the user's browser, potentially leading to unauthorized actions, data theft, or further exploitation. The severity of this vulnerability is rated as MODERATE with a CVSS score of 6.1.
How To Fix
Minimum fixed version
0.8.2
This is the first release that contains the fix.
npm install nodebb@0.8.2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading to the latest version is not immediately feasible, a temporary workaround can be implemented by manually sanitizing the outgoing data in the vulnerable function. Here is an example of how to sanitize the data using the 'xss' library in Node.js:
const xss = require('xss');
function sanitizeOutgoing(data) {
return xss(data);
}
By applying this workaround, the risk of XSS attacks can be mitigated until a proper upgrade can be performed.
Conclusion
In conclusion, NodeBB versions prior to 0.7.3 are vulnerable to a cross-site scripting (XSS) attack. This vulnerability can be mitigated by upgrading to version 0.8.2 or later. If immediate upgrade is not possible, applying a temporary workaround by manually sanitizing the outgoing data can help reduce the risk. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
NodeBB is an open-source forum software written in Node.js. It provides a platform for creating online communities and discussion boards.
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 further exploit the affected system.
The vulnerability in NodeBB allows an attacker to inject malicious scripts into outgoing data. When a user visits a page containing the vulnerable code, the injected script is executed in their browser, potentially leading to unauthorized actions, data theft, or further exploitation.
The severity of this vulnerability is rated as MODERATE with a CVSS score of 6.1. While it is not the highest severity level, it still poses a significant risk and should be addressed promptly.
To fix this vulnerability, it is recommended to upgrade NodeBB to version 0.8.2 or later. The latest version includes the necessary patches to mitigate the XSS vulnerability.
References
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