CVE-2021-38479 : Exploit Details and Defense Strategies

A security vulnerability, identified as CVE-2021-38479, affects Versiondog software developed by AUVESY. This vulnerability was reported by Amir Preminger of Claroty to CISA and was made public on August 19, 2021. The vulnerability impacts API function codes by allowing attackers to manipulate these functions through arbitrary data injection.

Understanding CVE-2021-20657

This section will delve into the details of the CVE-2021-38479 vulnerability, its impact, technical description, affected systems, and mitigation strategies.

What is CVE-2021-38479?

The CVE-2021-38479 vulnerability involves many API function codes in Versiondog that accept raw pointers remotely from users and trust them as valid in-bound memory regions. This trust can be exploited by attackers to manipulate API functions by injecting arbitrary data into the resolved address of a raw pointer.

The Impact of CVE-2021-38479

The impact of CVE-2021-38479 is classified as having a base severity level of 'MEDIUM'. It has a CVSS v3.1 base score of 6.5, with a specific focus on integrity. The vulnerability does not require user interaction and has a low attack complexity. However, it can lead to serious consequences due to its potential for arbitrary data manipulation.

Technical Details of CVE-2021-38479

In-depth technical information about the vulnerability is crucial for understanding its implications fully.

Vulnerability Description

The vulnerability allows attackers to exploit API function codes by injecting arbitrary data via raw pointers, leading to potential unauthorized manipulation of the system's behavior.

Affected Systems and Versions

The affected product is Versiondog by AUVESY, with versions equal to or less than 8.0 being vulnerable.

Exploitation Mechanism

Attackers can exploit the CVE-2021-38479 vulnerability by taking advantage of the improper handling of raw pointers in API function codes within Versiondog, enabling them to inject malicious data and compromise system integrity.

Mitigation and Prevention

Effective mitigation strategies can help organizations protect their systems from CVE-2021-38479 and similar vulnerabilities.

Immediate Steps to Take

It is crucial to apply security patches promptly to mitigate the risk associated with CVE-2021-38479. Additionally, security teams should monitor for any signs of exploitation and implement temporary workarounds if necessary.

Long-Term Security Practices

Organizations should prioritize secure coding practices, conduct regular security audits, and provide ongoing cybersecurity training to mitigate the risk of similar vulnerabilities in the future.

Patching and Updates

AUVESY recommends upgrading Versiondog to Version 8.1 or later as a preventive measure. Regularly updating software and implementing security patches are essential for safeguarding systems against known vulnerabilities.