CVE-2018-7505 : What You Need to Know

In May 2018, CVE-2018-7505 was published, affecting Advantech WebAccess versions V8.2_20170817 and earlier, V8.3.0 and earlier, WebAccess Dashboard V.2.0.15 and earlier, WebAccess Scada Node prior to 8.3.1, and WebAccess/NMS 2.0.3 and earlier.

Understanding CVE-2018-7505

This CVE involves a vulnerability in the TFTP application of Advantech WebAccess, allowing unauthorized file uploads to the web application, potentially leading to arbitrary code execution.

What is CVE-2018-7505?

The vulnerability in older versions of Advantech WebAccess allows attackers to upload files without authorization, posing a risk of executing malicious code.

The Impact of CVE-2018-7505

The vulnerability could enable threat actors to compromise the integrity and security of the affected systems, potentially leading to unauthorized access and control.

Technical Details of CVE-2018-7505

This section provides detailed technical insights into the CVE.

Vulnerability Description

The TFTP application in Advantech WebAccess versions V8.2_20170817 and earlier, V8.3.0 and earlier, WebAccess Dashboard V.2.0.15 and earlier, WebAccess Scada Node prior to 8.3.1, and WebAccess/NMS 2.0.3 and earlier allows unauthorized file uploads, creating a risk of arbitrary code execution.

Affected Systems and Versions

Advantech WebAccess versions V8.2_20170817 and earlier
Advantech WebAccess versions V8.3.0 and earlier
WebAccess Dashboard V.2.0.15 and earlier
WebAccess Scada Node versions prior to 8.3.1
WebAccess/NMS 2.0.3 and earlier

Exploitation Mechanism

The vulnerability permits unauthorized file uploads to the web application, potentially enabling threat actors to execute arbitrary code.

Mitigation and Prevention

Protecting systems from CVE-2018-7505 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Advantech WebAccess to the latest version to mitigate the vulnerability.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all software and applications to address security flaws.
Conduct security assessments and penetration testing to identify and remediate vulnerabilities.
Educate users and IT staff on best practices for cybersecurity.

Patching and Updates

Advantech has likely released patches to address the vulnerability. Ensure all affected systems are updated with the latest security fixes.