CVE-2021-35508 : Security Advisory and Response

NMSAccess32.exe in TeraRecon AQNetClient 4.4.13 enables attackers to run a malicious binary with SYSTEM privileges by leveraging a low-privileged user account. This vulnerability requires the low-privileged user to modify the service configuration or overwrite the binary service.

Understanding CVE-2021-35508

This section will delve into the specifics of CVE-2021-35508.

What is CVE-2021-35508?

CVE-2021-35508 involves NMSAccess32.exe in TeraRecon AQNetClient 4.4.13, allowing threat actors to execute a malicious binary with elevated privileges through a low-privileged user account.

The Impact of CVE-2021-35508

The impact of this vulnerability is significant as it grants unauthorized users the ability to execute arbitrary code with the highest level of system privileges, leading to potential system compromise.

Technical Details of CVE-2021-35508

This section will explore the technical aspects of CVE-2021-35508.

Vulnerability Description

NMSAccess32.exe in TeraRecon AQNetClient 4.4.13 permits threat actors to execute a malicious binary with SYSTEM privileges by exploiting a low-privileged user account.

Affected Systems and Versions

The affected system includes TeraRecon AQNetClient 4.4.13. Users operating on this system are at risk of exploitation.

Exploitation Mechanism

To exploit CVE-2021-35508, a low-privileged user must manipulate the service configuration or tamper with the binary service, enabling them to run a malicious binary with elevated privileges.

Mitigation and Prevention

In this section, we will discuss mitigation strategies to address CVE-2021-35508.

Immediate Steps to Take

Users are advised to implement strict access controls, monitor service configuration changes, and conduct regular security audits to detect any unauthorized modifications.

Long-Term Security Practices

Employing the principle of least privilege, conducting security awareness training, and keeping systems up to date are recommended long-term security practices.

Patching and Updates

It is crucial to apply patches and updates provided by TeraRecon promptly. Regularly check for security advisories and ensure your system is running the latest secure version.