CVE-2019-3953 : Security Advisory and Response

A vulnerability in Advantech WebAccess/SCADA 8.4.0 allows remote attackers to execute arbitrary code through a crafted IOCTL 10012 RPC call.

Understanding CVE-2019-3953

This CVE involves a stack-based buffer overflow in Advantech WebAccess/SCADA 8.4.0.

What is CVE-2019-3953?

The vulnerability enables unauthenticated remote attackers to execute any desired code by exploiting a specific IOCTL 10012 RPC call.

The Impact of CVE-2019-3953

The overflow of the stack-based buffer in Advantech WebAccess/SCADA 8.4.0 poses a severe security risk, allowing attackers to execute arbitrary code remotely.

Technical Details of CVE-2019-3953

This section provides detailed technical insights into the CVE.

Vulnerability Description

The vulnerability in Advantech WebAccess/SCADA 8.4.0 results from a stack-based buffer overflow, triggered by a specially crafted IOCTL 10012 RPC call.

Affected Systems and Versions

Product: Advantech WebAccess/SCADA
Version: 8.4.0

Exploitation Mechanism

Attackers can exploit this vulnerability remotely without authentication by sending a specifically crafted IOCTL 10012 RPC call.

Mitigation and Prevention

Protecting systems from CVE-2019-3953 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply vendor-supplied patches promptly to mitigate the vulnerability.
Implement network segmentation to limit exposure to potential attacks.
Monitor network traffic for any signs of exploitation attempts.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate weaknesses.

Patching and Updates

Ensure timely installation of security patches and updates to prevent exploitation of the vulnerability.