CVE-2021-42838 : Security Advisory and Response

Grand Vice info Co. webopac7 book search field parameter vulnerability allows for Reflective XSS attacks.

Understanding CVE-2021-42838

What is CVE-2021-42838?

Grand Vice info Co. webopac7 is susceptible to a security loophole where unauthenticated attackers can inject JavaScript remotely, leading to Reflective XSS attacks.

The Impact of CVE-2021-42838

This vulnerability could be exploited by malicious actors to execute JavaScript within the context of an unknowing user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2021-42838

Vulnerability Description

The issue arises from the improper restriction of special characters in the book search field parameter of Grand Vice info Co. webopac7, enabling attackers to inject JavaScript code remotely.

Affected Systems and Versions

Product: webopac7
Vendor: Grand Vice info Co.
Versions: 7.1.20160701, 1.8.20160701

Exploitation Mechanism

Attackers exploit the vulnerability by injecting malicious JavaScript into the book search field, which is then executed when a user interacts with the affected parameter.

Mitigation and Prevention

Immediate Steps to Take

Contact tech support from Grand Vice info Co. for guidance on mitigating the vulnerability.

Long-Term Security Practices

Implement input validation to sanitize and restrict special characters in user inputs.

Patching and Updates

Regularly apply security patches and updates provided by the vendor to address known vulnerabilities.