CVE-2018-3931 Explained : Impact and Mitigation

Antenna House Office Server Document Converter version V6.1 Pro MR2 for Linux64 (6,1,2018,0312) is vulnerable to a remote code execution due to an out-of-bounds write error when processing a specially crafted Microsoft Word document.

Understanding CVE-2018-3931

This CVE entry identifies a critical vulnerability in Antenna House's Office Server Document Converter version V6.1 Pro MR2 for Linux64.

What is CVE-2018-3931?

The vulnerability in this software version allows an attacker to execute remote code by exploiting an out-of-bounds write error triggered by a malicious Microsoft Word document.

The Impact of CVE-2018-3931

The impact of this vulnerability is rated as high, with a CVSS base score of 8.8. It can lead to unauthorized remote code execution with high confidentiality, integrity, and availability impacts.

Technical Details of CVE-2018-3931

Antenna House Office Server Document Converter version V6.1 Pro MR2 for Linux64 is susceptible to exploitation due to the following technical details:

Vulnerability Description

The vulnerability arises from a flaw in the

putShapeProperty

function, allowing an attacker to trigger an out-of-bounds write error.

Affected Systems and Versions

Product: Antenna House
Vendor: Antenna House
Version: Office Server Document Converter version V6.1 Pro MR2 for Linux64 (6,1,2018,0312)

Exploitation Mechanism

The vulnerability can be exploited by crafting a specific Microsoft Word (DOC) document to trigger the out-of-bounds write error, leading to remote code execution.

Mitigation and Prevention

To address CVE-2018-3931 and enhance system security, consider the following mitigation strategies:

Immediate Steps to Take

Apply security patches provided by Antenna House promptly.
Avoid opening untrusted Microsoft Word documents.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Conduct regular security assessments and penetration testing.
Educate users on safe document handling practices to prevent malicious file execution.

Patching and Updates

Stay informed about security updates and patches released by Antenna House.