CVE-2018-6911 Explained : Impact and Mitigation

Remote attackers can exploit the VBWinExec function found in Node\AspVBObj.dll within Advantech WebAccess 8.3.0 to execute arbitrary OS commands. This vulnerability arises from the command parameter, which only requires a single argument.

Understanding CVE-2018-6911

The VBWinExec function in Node\AspVBObj.dll in Advantech WebAccess 8.3.0 allows remote attackers to execute arbitrary OS commands via a single argument (aka the command parameter).

What is CVE-2018-6911?

CVE-2018-6911 is a vulnerability that enables remote attackers to exploit the VBWinExec function in Advantech WebAccess 8.3.0 to execute arbitrary OS commands.

The Impact of CVE-2018-6911

This vulnerability can lead to unauthorized execution of commands on the affected system, potentially resulting in data breaches, system compromise, and other security risks.

Technical Details of CVE-2018-6911

Vulnerability Description

The vulnerability lies in the VBWinExec function within Node\AspVBObj.dll in Advantech WebAccess 8.3.0, allowing attackers to run OS commands with a single argument.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Not applicable

Exploitation Mechanism

Attackers can exploit the VBWinExec function in Advantech WebAccess 8.3.0 by providing a single argument in the command parameter.

Mitigation and Prevention

Immediate Steps to Take

Disable or restrict access to the VBWinExec function in Advantech WebAccess 8.3.0.
Implement network segmentation to limit exposure to potential attackers.

Long-Term Security Practices

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

Patching and Updates

Apply security patches provided by Advantech to fix the vulnerability in WebAccess 8.3.0.