CVE-2021-21980 : What You Need to Know

A file read vulnerability in VMware vCenter Server and VMware Cloud Foundation has been identified, allowing unauthorized access to sensitive information by exploiting the vSphere Web Client.

Understanding CVE-2021-21980

This section provides insights into the nature of the vulnerability and its implications.

What is CVE-2021-21980?

The CVE-2021-21980 vulnerability involves an unauthorized arbitrary file read flaw in the vSphere Web Client (FLEX/Flash). It enables a malicious actor with network access to port 443 on vCenter Server to obtain sensitive data.

The Impact of CVE-2021-21980

The impact of this vulnerability is significant as it opens the door for attackers to access confidential information stored on the affected VMware products.

Technical Details of CVE-2021-21980

Explore the technical aspects of the CVE-2021-21980 vulnerability below.

Vulnerability Description

The flaw allows unauthorized file read access and can be exploited by attackers with network access to the vCenter Server's port 443.

Affected Systems and Versions

VMware vCenter Server versions 6.7 before 6.7 U3p and 6.5 before 6.5 U3r, as well as VMware Cloud Foundation 3.x, are impacted by this vulnerability.

Exploitation Mechanism

Malicious actors can exploit this vulnerability via the vSphere Web Client (FLEX/Flash) to gain access to sensitive data stored on the affected VMware products.

Mitigation and Prevention

Discover the measures to mitigate and prevent exploitation of CVE-2021-21980.

Immediate Steps to Take

Organizations should promptly apply security patches provided by VMware to address the vulnerability and enhance system security.

Long-Term Security Practices

Implementing network segmentation, access controls, and regular security monitoring can help prevent similar vulnerabilities in the future.

Patching and Updates

Regularly update VMware vCenter Server and VMware Cloud Foundation to the latest versions to ensure systems are protected against known vulnerabilities.