CVE-2021-35268 : Security Advisory and Response

A heap buffer overflow vulnerability, identified as CVE-2021-35268, exists in NTFS-3G versions prior to 2021.8.22. This vulnerability occurs when a specially crafted NTFS inode is loaded, leading to potential code execution and privilege escalation.

Understanding CVE-2021-35268

This section explores the details of the CVE-2021-35268 vulnerability.

What is CVE-2021-35268?

CVE-2021-35268 is a heap buffer overflow vulnerability in NTFS-3G versions < 2021.8.22. It arises when a malicious NTFS inode is loaded in the function ntfs_inode_real_open, enabling attackers to execute arbitrary code and escalate their privileges.

The Impact of CVE-2021-35268

Exploitation of this vulnerability can result in unauthorized code execution and the potential escalation of privileges on affected systems.

Technical Details of CVE-2021-35268

This section delves into the technical aspects of CVE-2021-35268.

Vulnerability Description

The vulnerability allows for a heap buffer overflow to occur when handling specific NTFS inodes, potentially leading to code execution and privilege escalation.

Affected Systems and Versions

All NTFS-3G versions prior to 2021.8.22 are affected by this vulnerability.

Exploitation Mechanism

Exploiting this vulnerability involves loading a malicious NTFS inode in the ntfs_inode_real_open function, triggering the heap buffer overflow.

Mitigation and Prevention

In this section, we discuss measures to mitigate the risks associated with CVE-2021-35268.

Immediate Steps to Take

Users are advised to update their NTFS-3G installations to version 2021.8.22 or later to prevent exploitation of this vulnerability.

Long-Term Security Practices

Adopting robust security practices such as regular software updates, security training, and threat monitoring can enhance overall system security.

Patching and Updates

Ensure timely application of security patches provided by NTFS-3G and relevant vendors to address CVE-2021-35268 and other potential vulnerabilities.