CVE-2021-33391 Explained : Impact and Mitigation

A security vulnerability has been identified in HTACG HTML Tidy v5.7.28, allowing attackers to execute arbitrary code. Understand the impact, technical details, and mitigation steps for CVE-2021-33391.

Understanding CVE-2021-33391

This section provides an overview of the CVE-2021-33391 vulnerability in HTACG HTML Tidy v5.7.28.

What is CVE-2021-33391?

The vulnerability in HTACG HTML Tidy v5.7.28 enables attackers to execute arbitrary code through the -g option of the CleanNode() function in gdoc.c.

The Impact of CVE-2021-33391

The CVE-2021-33391 vulnerability poses a significant risk as attackers can exploit it to execute malicious code on affected systems.

Technical Details of CVE-2021-33391

Explore the specific technical information related to CVE-2021-33391 in this section.

Vulnerability Description

The vulnerability in HTACG HTML Tidy v5.7.28 arises from improper handling of input, leading to the execution of arbitrary code.

Affected Systems and Versions

All versions of HTACG HTML Tidy v5.7.28 are affected by this vulnerability, making them susceptible to exploitation.

Exploitation Mechanism

Attackers can leverage the -g option of the CleanNode() function in gdoc.c to inject and execute arbitrary code on vulnerable systems.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent the exploitation of CVE-2021-33391.

Immediate Steps to Take

Users are advised to update HTACG HTML Tidy to a patched version and avoid using the -g option until the system is secured.

Long-Term Security Practices

It is essential to follow secure coding practices, conduct regular security audits, and stay updated on potential vulnerabilities within HTACG HTML Tidy.

Patching and Updates

Ensure that the HTACG HTML Tidy software is regularly updated to the latest version containing patches for CVE-2021-33391 to maintain system security.