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CVE-2021-41563 : Security Advisory and Response

Discover the impact of CVE-2021-41563, a Medium severity stored XSS vulnerability in Tad Book3. Learn about affected systems, exploitation, and mitigation steps like updating to version 3.9.

Tad Book3 - Stored XSS vulnerability allows unauthenticated attackers to execute stored XSS attacks by injecting JavaScript syntax into the book function.

Understanding CVE-2021-41563

Tad Book3 software version 3.89 and below are affected by a stored XSS vulnerability reported on October 8, 2021.

What is CVE-2021-41563?

        Tad Book3 editing book function lacks special character filtering
        Attackers can inject malicious JavaScript code remotely
        Allows for the execution of stored XSS attacks

The Impact of CVE-2021-41563

        CVSS v3.1 Base Score: 6.1 (Medium)
        Attack Complexity: Low
        Attack Vector: Network
        User Interaction Required
        Confidentiality, Integrity, and Availability Impact: Low

Technical Details of CVE-2021-41563

Tad Book3 - Stored XSS vulnerability technical details.

Vulnerability Description

        Unfiltered special characters in the book editing function
        Enables remote injection of JavaScript code

Affected Systems and Versions

        Product: Tad Book3
        Vendor: Tad
        Versions Affected: <= 3.89 (custom version 0)

Exploitation Mechanism

        Unauthenticated attackers inject JavaScript to exploit

Mitigation and Prevention of CVE-2021-41563

Protect your systems against the Tad Book3 vulnerability.

Immediate Steps to Take

        Update Tad Book3 to version 3.9

Long-Term Security Practices

        Implement input validation and output encoding
        Regular security audits and code reviews

Patching and Updates

        Stay informed about security patches and updates for Tad Book3

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