# MA-1122.082024: MyCERT Advisory - RCE and LPE Vulnerabilities in OpenVP

**Date:** 13 Aug 2024  
**Source:** https://www.mycert.org.my/portal/advisory?id=MA-1122.082024  
**Advisory ID:** MA-1122.082024

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**1.0 Introduction**
Recently, Microsoft disclosed four security flaws in the open-source OpenVPN software that could be chained to achieve remote code execution (RCE) and local privilege escalation (LPE).
**2.0 Impact**
These vulnerabilities could allow an attacker to gain full control over targeted endpoints, potentially resulting in data breaches, system compromise and unauthorized access to sensitive information. 
**3.0 Affected Products**
- **CVE-2024-1305 (Critical) -**Windows TAP driver: A memory overflow vulnerability leading to DoS in Windows.
- **CVE-2024-27459 (High) –**openvpnserv: A stack overflow vulnerability leading to a Denial-of-service (DoS) and LPE in Windows.
- **CVE-2024-24974 (High) –**openserv: Unauthorized access to the [\\openvpn\\service](file://openvpn/service) named pipe in Windows, allowing an attacker to remotely interact with it and launch operations on it.
- **CVE-2024-27903 (High) –**openserv: A vulnerability in the plugin mechanism leading to RCE in Windows, and LPE and data manipulation in Android, iOS, macOS and BSD.
**4.0 Recommendations**
CyberSecurity Malaysia encourages users and administrators to review the [Microsoft MSRC Security Update Guide](https://msrc.microsoft.com/update-guide) and apply the necessary updates.
Kindly refer to the following URL: 
- <https://www.microsoft.com/en-us/security/blog/2024/08/08/chained-for-attack-openvpn-vulnerabilities-discovered-leading-to-rce-and-lpe/>
Generally, we advise users to be updated with the latest security announcements by the vendor and follow best practice security policies to determine which updates should be applied.
For further enquiries, please contact Cyber999 Incident Response Centre through the following channels:
E-mail: cyber999[at]cybersecurity.my 
Phone: 1-300-88-2999 (monitored during business hours) 
Mobile: +60 19 2665850 (24x7 call incident reporting) 
Business Hours: Mon - Fri 08:30 -17:30 MYT 
Web: [https://www.mycert.org.my](https://www.mycert.org.my/)
**5.0    References**
- <https://www.microsoft.com/en-us/security/blog/2024/08/08/chained-for-attack-openvpn-vulnerabilities-discovered-leading-to-rce-and-lpe/>