CVE-2021-23654 : Exploit Details and Defense Strategies

This CVE-2021-23654 article provides detailed insights into a vulnerability affecting the 'html-to-csv' package, leading to improper input validation. Explore the impact, technical details, and mitigation strategies associated with this CVE.

Understanding CVE-2021-23654

CVE-2021-23654 is related to improper input validation in the 'html-to-csv' package, allowing the acceptance of formulas in HTML pages without validation and potential CSV file manipulation by malicious actors.

What is CVE-2021-23654?

CVE-2021-23654 affects all versions of the 'html-to-csv' package, facilitating the inclusion of formulas in HTML pages without proper validation. This loophole enables threat actors to embed malicious links or execute commands through CSV files.

The Impact of CVE-2021-23654

The vulnerability's CVSS v3.1 base score is 5.6, with a medium severity rating. It poses a high attack complexity and network-based attack vector, potentially leading to low confidentiality and integrity impacts.

Technical Details of CVE-2021-23654

Understand the vulnerability through its description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises due to the improper validation of input in the 'html-to-csv' package, allowing unchecked formulas in HTML pages, leading to possible CSV file manipulations.

Affected Systems and Versions

All versions of the 'html-to-csv' package are impacted by this vulnerability due to the lack of proper input validation mechanisms.

Exploitation Mechanism

Malicious actors can exploit this vulnerability by embedding harmful links or executing commands by leveraging the unvalidated formulas within HTML pages converted to CSV files.

Mitigation and Prevention

Discover immediate steps to secure your systems and ensure long-term protection against such vulnerabilities.

Immediate Steps to Take

Implement input validation mechanisms, sanitize user inputs, and avoid accepting unverified content in the 'html-to-csv' package to mitigate the risk of exploitation.

Long-Term Security Practices

Adopt secure coding practices, conduct regular security audits, and stay informed about updates and security patches to fortify your systems against potential threats.

Patching and Updates

Stay updated with the latest patches released by the package maintainers to address and fix the input validation vulnerability in the 'html-to-csv' package.