CVE-2020-13556 Explained : Impact and Mitigation

An out-of-bounds write vulnerability in the Ethernet/IP server functionality of EIP Stack Group OpENer 2.3 and development commit 8c73bf3 can lead to remote code execution.

Understanding CVE-2020-13556

This CVE involves a critical vulnerability in the EIP Stack Group OpENer software.

What is CVE-2020-13556?

The vulnerability allows for remote code execution through a specially crafted series of network requests.

The Impact of CVE-2020-13556

The severity of this vulnerability is rated as Critical with a CVSS base score of 9.8.

Technical Details of CVE-2020-13556

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability is categorized as an out-of-bounds write issue (CWE-787) in the Ethernet/IP server functionality of EIP Stack Group OpENer 2.3 and development commit 8c73bf3.

Affected Systems and Versions

Product: EIP Stack Group
Versions affected: EIP Stack Group OpENer 2.3, EIP Stack Group OpENer development commit 8c73bf3

Exploitation Mechanism

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

Mitigation and Prevention

Steps to address and prevent exploitation of CVE-2020-13556.

Immediate Steps to Take

Apply vendor patches or updates promptly.
Monitor network traffic for any suspicious activity.
Implement network segmentation to limit the attack surface.

Long-Term Security Practices

Regularly update and patch software to address vulnerabilities.
Conduct security assessments and penetration testing.
Educate users on safe network practices.

Patching and Updates

Check for security advisories from the vendor.
Apply patches or updates as soon as they are available.