CVE-2013-7451: XSS Bypass in validator
Summary
CVE-2013-7451: Moderate severity vulnerability that affects validator. Affects validator versions < 1.1.0. Fixed in 1.1.0. How to fix ↓
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Background
The validator is an npm package used for input validation and sanitization in Node.js applications. It provides various functions to validate and sanitize user input, preventing common security vulnerabilities such as cross-site scripting (XSS) attacks. However, prior to version 1.1.0, the validator module is vulnerable to an XSS bypass issue.
Vulnerability Detail
The vulnerability (CVE-2013-7451) in the validator module allows remote attackers to bypass the XSS filter by exploiting a nested tag. This means that malicious input containing nested tags can pass through the validator's XSS filter and potentially execute arbitrary JavaScript code in the victim's browser. This can lead to various security risks, including unauthorized access, data theft, and session hijacking.
How To Fix
Minimum fixed version
1.1.0
This is the first release that contains the fix.
npm install validator@1.1.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading the validator module is not immediately feasible, a temporary workaround is to implement additional input validation and sanitization measures in the application code. This can include using other security libraries or custom validation functions to complement the validator module's capabilities. It is important to thoroughly review and test these measures to ensure they effectively mitigate the XSS bypass vulnerability.
Conclusion
In conclusion, the validator module prior to version 1.1.0 is vulnerable to an XSS bypass issue, which can allow attackers to execute arbitrary JavaScript code in the victim's browser. To mitigate this vulnerability, it is recommended to upgrade the validator module to version 1.1.0 or later. Alternatively, additional input validation and sanitization measures can be implemented as a temporary workaround. For further support on vulnerability remediation, you can contact DevNack.com.
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FAQ
The vulnerability allows attackers to bypass the XSS filter in the validator module, potentially executing malicious JavaScript code in the victim's browser. This can lead to various security risks, including unauthorized access, data theft, and session hijacking.
You can use Vulert's playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities, using package-lock.json as a reference.
Yes, the vulnerability has been fixed in version 1.1.0 of the validator module. It is recommended to upgrade to this version or later to mitigate the XSS bypass issue.
While specific known exploits for this vulnerability may not be publicly available, the existence of the vulnerability increases the risk of potential attacks. It is crucial to promptly apply the recommended fix or workaround to minimize the risk.
You can find more information about this vulnerability, including its CVE identifier (CVE-2013-7451), in the GitHub Advisory Database (https://github.com/github/advisory-database/advisories/GHSA-qpjp-7rp2-9c3f).
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