CVE-2020-7656: Cross-Site Scripting in jquery
Summary
CVE-2020-7656: Cross-Site Scripting in jquery. Affects jquery versions >= 1.2.1, < 1.9.0. Fixed in 1.9.0. How to fix ↓
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Background
The jquery package is a popular JavaScript library that simplifies HTML document traversal, event handling, and animation. It is widely used in web development projects to enhance user experience and streamline client-side scripting. However, versions prior to 1.9.0 are vulnerable to Cross-Site Scripting (XSS) attacks.
Vulnerability Detail
The vulnerability in jquery arises from the load method's failure to recognize and remove "<script>" HTML tags that contain a whitespace character, such as "</script >". This oversight allows attackers to execute arbitrary JavaScript code in a victim's browser. By injecting malicious scripts, an attacker can steal sensitive information, manipulate web content, or perform actions on behalf of the victim.
How To Fix
Minimum fixed version
1.9.0
This is the first release that contains the fix.
npm install jquery@1.9.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, developers can manually sanitize user input and ensure that any user-generated content is properly escaped before being rendered on the page. This can be achieved using security libraries or frameworks that provide built-in protection against XSS attacks.
Conclusion
In conclusion, the jquery package versions prior to 1.9.0 are vulnerable to Cross-Site Scripting (XSS) attacks. To mitigate this vulnerability, it is crucial to upgrade to version 1.9.0 or later. Additionally, developers should follow secure coding practices and sanitize user input to prevent XSS attacks. For further support and assistance in vulnerability remediation, you can reach out to DevNack.com.
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FAQ
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, manipulate web content, or perform actions on behalf of the victim.
If your application uses a version of the jquery package prior to 1.9.0, it is vulnerable to Cross-Site Scripting (XSS) attacks. Attackers can exploit this vulnerability to execute arbitrary JavaScript code in the browsers of your application's users, potentially leading to unauthorized access, data theft, or other malicious activities.
While specific exploits targeting this vulnerability may exist, they have not been disclosed in the provided information. However, it is crucial to address this vulnerability promptly to mitigate the risk of potential attacks.
Yes, the CVSS score for this vulnerability is 6.1, indicating a moderate severity level. It is important to prioritize the upgrade to a fixed version of the jquery package to protect your application and its users from potential attacks.
You can find more information about this vulnerability, including technical details and the recommended fix, in the vulnerability report provided by the GitHub Security Advisory Database. The report can be accessed at: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-q4m3-2j7h-f7xw/GHSA-q4m3-2j7h-f7xw.json
References
Related vulnerabilities
Recent vulnerabilities recorded for jquery.
