Cross-Site Scripting Vulnerability in Angular.js Prior to 1.8.0
Summary
CVE-2020-7676: angular.js prior to 1.8.0 allows cross site scripting. Affects angular.js across 2 version ranges.
< 1.8.0-1
< e55d352e942465479fa9f93b566db20a96b4cf15
Fixed in 1.8.0-1. How to fix ↓
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Background
Angular.js is a widely-used JavaScript framework designed for building dynamic web applications. It provides a robust structure for developing single-page applications, allowing developers to create rich user interfaces with ease. However, prior to version 1.8.0, Angular.js was susceptible to a cross-site scripting (XSS) vulnerability that could compromise the security of applications built using this framework.
Vulnerability Detail
The vulnerability arises from a flaw in the regex-based input HTML replacement mechanism in Angular.js. This flaw can lead to sanitized code being turned into unsanitized code, particularly when <option> elements are wrapped in <select> elements. This change in parsing behavior can allow attackers to inject malicious scripts into web applications, potentially leading to unauthorized access to sensitive information or user sessions.
How To Fix
Minimum fixed version
1.8.0-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade angular.jsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate upgrading is not feasible, consider implementing input validation and sanitization on user inputs to mitigate the risk of XSS attacks. Additionally, avoid using <option> elements within <select> elements in a way that could trigger this vulnerability until the upgrade is completed.
Conclusion
The cross-site scripting vulnerability in Angular.js prior to version 1.8.0 poses a significant risk to web applications built using this framework. It is crucial for developers to upgrade to the latest version to ensure the security of their applications. Additionally, utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
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FAQ
The CVSS score of this vulnerability is 5.4, indicating a moderate level of severity.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. You can check your application using the Vulert playground without any signup.
If exploited, this vulnerability can allow attackers to execute malicious scripts in the context of the user's session, potentially leading to data theft, session hijacking, or other malicious activities.
Yes, upgrading to Angular.js version 1.8.0 or later will resolve this vulnerability.
If you cannot upgrade immediately, implement input validation and sanitization as a temporary measure to reduce the risk of XSS attacks.
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