CVE-2019-3954 : Exploit Details and Defense Strategies
Learn about CVE-2019-3954, a critical stack-based buffer overflow vulnerability in Advantech WebAccess/SCADA 8.4.0 allowing remote attackers to execute arbitrary code. Find mitigation steps and prevention measures.
A stack-based buffer overflow vulnerability in Advantech WebAccess/SCADA 8.4.0 allows remote attackers to execute arbitrary code by sending a crafted IOCTL 81024 RPC call.
Understanding CVE-2019-3954
This CVE involves a critical vulnerability in Advantech WebAccess/SCADA 8.4.0 that can be exploited by unauthorized attackers.
What is CVE-2019-3954?
CVE-2019-3954 is a stack-based buffer overflow vulnerability in Advantech WebAccess/SCADA 8.4.0, enabling attackers to execute arbitrary code through a specifically crafted IOCTL 81024 RPC call.
The Impact of CVE-2019-3954
The exploitation of this vulnerability can lead to the execution of arbitrary code by remote, unauthenticated attackers, posing a significant security risk to affected systems.
Technical Details of CVE-2019-3954
This section provides detailed technical insights into the vulnerability.
Vulnerability Description
An unauthorized attacker can exploit a stack-based buffer overflow vulnerability in Advantech WebAccess/SCADA 8.4.0 by sending a specifically crafted IOCTL 81024 RPC call, resulting in the execution of arbitrary code.
Affected Systems and Versions
- Product: Advantech WebAccess/SCADA
- Version: 8.4.0
Exploitation Mechanism
The vulnerability can be exploited by sending a crafted IOCTL 81024 RPC call, triggering the stack-based buffer overflow and allowing the execution of arbitrary code.
Mitigation and Prevention
Protecting systems from CVE-2019-3954 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Implement network segmentation to limit exposure.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Conduct regular security assessments and penetration testing.
- Keep systems and software up to date with the latest security patches.
- Educate users on security best practices to prevent social engineering attacks.
- Implement strong access controls and authentication mechanisms.
- Consider deploying intrusion detection and prevention systems.
Patching and Updates
Regularly check for updates and patches from Advantech for WebAccess/SCADA to address the CVE-2019-3954 vulnerability.