CVE-2019-18996 Explained : Impact and Mitigation

A vulnerability in ABB PB610 Panel Builder 600 versions 2.8.0.424 and earlier allows malicious DLL files to be accepted from locations outside the program directory, potentially enabling code execution.

Understanding CVE-2019-18996

This CVE involves a security flaw in the HMIStudio component of ABB PB610 Panel Builder 600, which permits the acceptance of DLLs from unauthorized locations, posing a risk of code execution by attackers.

What is CVE-2019-18996?

The vulnerability in ABB PB610 Panel Builder 600 versions 2.8.0.424 and earlier allows for the acceptance of DLL files from locations beyond the program directory, potentially leading to unauthorized code execution within the application's context.

The Impact of CVE-2019-18996

The vulnerability has a CVSS base score of 7.1, indicating a high severity level. It poses a risk of allowing attackers with local file system access to execute code within the application's context.

Technical Details of CVE-2019-18996

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The flaw in ABB PB610 Panel Builder 600 versions 2.8.0.424 and earlier allows DLLs to be accepted from locations outside the program directory, potentially enabling unauthorized code execution.

Affected Systems and Versions

Product: PB610 Panel Builder 600
Vendor: ABB
Versions Affected: <= 2.8.0.424
Version Type: Custom

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Availability Impact: Low
Confidentiality Impact: None
Integrity Impact: High
Privileges Required: None
Scope: Changed
User Interaction: Required

Mitigation and Prevention

Protecting systems from CVE-2019-18996 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by ABB promptly.
Restrict access to the local file system to authorized personnel only.
Monitor and restrict DLL loading from unauthorized locations.

Long-Term Security Practices

Regularly update and patch software to address security vulnerabilities.
Implement least privilege access controls to limit potential attack surfaces.
Conduct security assessments and audits to identify and mitigate risks proactively.

Patching and Updates

ABB may release patches or updates to address the vulnerability. Stay informed about security advisories and apply patches as soon as they are available.