CVE-2017-4919 : Exploit Details and Defense Strategies

VMware vCenter Server 5.5, 6.0, and 6.5 allows users with specific privileges to access Guest Operating Systems without authentication using the VIX API.

Understanding CVE-2017-4919

This CVE involves an unauthorized access heap buffer-overflow vulnerability in VMware vCenter Server.

What is CVE-2017-4919?

CVE-2017-4919 pertains to a security issue in VMware vCenter Server versions 5.5, 6.0, and 6.5, enabling users with limited privileges to exploit the VIX API for unauthorized access to Guest Operating Systems within vSphere.

The Impact of CVE-2017-4919

The vulnerability allows unauthorized users to bypass authentication and potentially gain access to sensitive guest operating systems, posing a significant security risk within VMware environments.

Technical Details of CVE-2017-4919

This section delves into the specific technical aspects of the CVE.

Vulnerability Description

The vulnerability in VMware vCenter Server 5.5, 6.0, and 6.5 permits users with restricted privileges to leverage the VIX API for unauthorized access to Guest Operating Systems without the need for authentication.

Affected Systems and Versions

Product: VMware vCenter Server
Vendor: VMware
Versions Affected: VMware vCenter Server 5.5.x, 6.0.x, 6.5.x

Exploitation Mechanism

Unauthorized users with specific privileges can exploit the VIX API to access Guest Operating Systems within vSphere without requiring authentication, potentially compromising system security.

Mitigation and Prevention

Protecting systems from CVE-2017-4919 requires immediate action and long-term security measures.

Immediate Steps to Take

Apply security patches provided by VMware promptly to address the vulnerability.
Restrict access to vulnerable systems and ensure only authorized personnel can interact with Guest Operating Systems.

Long-Term Security Practices

Regularly monitor and update VMware vCenter Server to mitigate future vulnerabilities.
Implement strong access controls and user authentication mechanisms to prevent unauthorized access.

Patching and Updates

Regularly check for security advisories from VMware and apply patches as soon as they are released to safeguard systems against known vulnerabilities.