CVE-2021-21910 : What You Need to Know
Learn about CVE-2021-21910, a privilege escalation vulnerability in Advantech R-SeeNet 2.4.15, allowing attackers to gain NT SYSTEM authority. Find out the impact, affected systems, and mitigation steps.
A privilege escalation vulnerability has been identified in the Windows installation process for Advantech R-SeeNet 2.4.15. Attackers can exploit this vulnerability by replacing a system file with a malicious one, allowing them to elevate privileges to NT SYSTEM authority.
Understanding CVE-2021-21910
This CVE refers to a privilege escalation vulnerability in Advantech R-SeeNet 2.4.15 on Windows systems. The vulnerability can be exploited by an attacker to gain elevated privileges on the affected system.
What is CVE-2021-21910?
CVE-2021-21910 is a vulnerability in Advantech R-SeeNet 2.4.15 that allows attackers to escalate privileges to NT SYSTEM authority by replacing a system file with a specially-crafted malicious file.
The Impact of CVE-2021-21910
The impact of this vulnerability is rated as high, with a CVSS base score of 8.8. It can lead to unauthorized access, data theft, and the execution of arbitrary code on the compromised system.
Technical Details of CVE-2021-21910
This section provides more insight into the vulnerability, including its description, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability arises due to incorrect default permissions in the Windows installation process of Advantech R-SeeNet 2.4.15, which allows an attacker to replace a system file to escalate privileges.
Affected Systems and Versions
All installations of Advantech R-SeeNet 2.4.15 (30.07.2021) on Windows platforms are affected by this vulnerability.
Exploitation Mechanism
To exploit CVE-2021-21910, an attacker needs to replace a specific system file with a crafted file, enabling them to gain elevated privileges on the system.
Mitigation and Prevention
Discover how to address and prevent the exploitation of CVE-2021-21910.
Immediate Steps to Take
Users are advised to apply security updates provided by Advantech to remediate this vulnerability and prevent potential exploitation.
Long-Term Security Practices
Implementing strong security measures, such as regular security patches, network segmentation, and user privilege management, can enhance overall system security.
Patching and Updates
Stay informed about security updates and patches released by Advantech for the R-SeeNet software to protect systems from known vulnerabilities.