CVE-2018-3991 Explained : Impact and Mitigation

A heap overflow vulnerability in the WkbProgramLow function of WibuKey Network server management, version 6.40.2402.500, can lead to remote code execution through a specially crafted TCP packet.

Understanding CVE-2018-3991

What is CVE-2018-3991?

This CVE describes a heap overflow vulnerability in the WkbProgramLow function of WibuKey Network server management, version 6.40.2402.500. An attacker can exploit this vulnerability by sending a TCP packet with malformed contents, potentially resulting in remote code execution.

The Impact of CVE-2018-3991

The vulnerability has a CVSSv3 base score of 10 (Critical) with high impacts on confidentiality, integrity, and availability. It requires no privileges for exploitation and can be triggered over a network.

Technical Details of CVE-2018-3991

Vulnerability Description

A heap overflow vulnerability exists in the WkbProgramLow function of WibuKey Network server management, version 6.40.2402.500. By sending a specially crafted TCP packet, an attacker can trigger a heap overflow, leading to potential remote code execution.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Version: 6.40.2402.500

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Changed
Vector String: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Mitigation and Prevention

Immediate Steps to Take

Apply vendor patches or updates promptly.
Implement network segmentation to limit the impact of potential attacks.
Monitor network traffic for any signs of exploitation.

Long-Term Security Practices

Regularly update and patch all software and systems.
Conduct security training for employees to raise awareness of social engineering tactics.

Patching and Updates

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