CVE-2020-7741 Explained : Impact and Mitigation
Learn about CVE-2020-7741, a critical Cross-site Scripting (XSS) vulnerability in hellojs before 1.18.6. Discover impact, affected systems, exploitation, and mitigation steps.
This CVE-2020-7741 article provides insights into a Cross-site Scripting (XSS) vulnerability affecting the hellojs package before version 1.18.6.
Understanding CVE-2020-7741
This section delves into the details of the CVE-2020-7741 vulnerability.
What is CVE-2020-7741?
CVE-2020-7741 is a Cross-site Scripting (XSS) vulnerability in the hellojs package before version 1.18.6. The issue arises from passing unsanitized user input directly to a JavaScript function, allowing malicious code execution.
The Impact of CVE-2020-7741
The vulnerability has a CVSS v3.1 base score of 9.9, indicating a critical severity level. It can lead to high availability impact, enabling attackers to execute arbitrary JavaScript code in the context of the affected application.
Technical Details of CVE-2020-7741
This section provides technical specifics of the CVE-2020-7741 vulnerability.
Vulnerability Description
The vulnerability in hellojs before 1.18.6 allows attackers to inject malicious XSS payloads via the 'oauth_redirect' parameter in URLs, leading to potential code execution.
Affected Systems and Versions
- Product: hellojs
- Versions Affected: < 1.18.6
Exploitation Mechanism
The flaw occurs due to the lack of input validation, allowing threat actors to craft URLs with malicious JavaScript payloads, exploiting the 'oauth_redirect' parameter.
Mitigation and Prevention
Explore the steps to mitigate and prevent the CVE-2020-7741 vulnerability.
Immediate Steps to Take
- Update hellojs to version 1.18.6 or newer to patch the XSS vulnerability.
- Implement input validation and sanitization mechanisms to filter out potentially harmful user input.
Long-Term Security Practices
- Regularly audit and review code for security vulnerabilities, especially input validation issues.
- Educate developers on secure coding practices to prevent XSS and other injection attacks.
Patching and Updates
- Stay informed about security updates for hellojs and promptly apply patches to address known vulnerabilities.