CVE-2021-41567 : Vulnerability Insights and Analysis
CVE-2021-41567 exposes a stored XSS vulnerability in Tad Uploader, enabling attackers to inject JavaScript code and execute malicious scripts. Learn how to mitigate and prevent exploitation.
Tad Uploader - Stored XSS is a vulnerability in Tad Uploader, allowing unauthenticated attackers to inject malicious scripts and execute stored XSS attacks.
Understanding CVE-2021-41567
CVE-2021-41567, published on October 8, 2021, exposes a security flaw in Tad Uploader that permits the remote injection of JavaScript code by unauthorized individuals, leading to the execution of stored XSS attacks.
What is CVE-2021-41567?
The vulnerability arises from the inadequacy of the new add subject parameter in the Tad Uploader's view book list function to filter special characters properly. This oversight enables attackers to embed malicious JavaScript code remotely, facilitating the execution of stored XSS attacks.
The Impact of CVE-2021-41567
The vulnerability has a CVSS v3.1 base score of 6.1, categorizing it as a medium severity issue. It affects confidentiality, integrity, and user interaction on the compromised systems. While the attack complexity is low, user interaction is required for successful exploitation, with no privileged access necessary.
Technical Details of CVE-2021-41567
Vulnerability Description
The flaw in Tad Uploader allows unauthenticated remote attackers to insert JavaScript code into the application, leading to stored XSS attacks.
Affected Systems and Versions
- Product: Uploader
- Vendor: Tad
- Versions Affected: <= 3.5.3 (Custom version 0)
Exploitation Mechanism
Attackers exploit the vulnerability by injecting JavaScript code through the new add subject parameter in the Tad Uploader's view book list function, enabling them to execute stored XSS attacks.
Mitigation and Prevention
To address CVE-2021-41567, it is crucial to take immediate action and implement long-term security practices to safeguard systems effectively.
Immediate Steps to Take
- Update Tad Uploader to version 3.5.4 to prevent exploitation.
Long-Term Security Practices
- Implement input validation mechanisms to filter special characters and prevent code injection.
- Conduct regular security audits and penetration testing to identify and mitigate vulnerabilities proactively.
Patching and Updates
Apply security patches released by Tad to address the vulnerability and enhance system security.