CVE-2021-22018 : Security Advisory and Response
Learn about CVE-2021-22018, a file deletion vulnerability in VMware vCenter Server and Cloud Foundation, potentially allowing malicious actors to delete critical files. Find mitigation steps here.
A file deletion vulnerability in VMware vCenter Server and VMware Cloud Foundation could allow an attacker to delete non-critical files through a specific network port.
Understanding CVE-2021-22018
This CVE identifies a security flaw in VMware vCenter Server and VMware Cloud Foundation that may lead to arbitrary file deletion when exploited by a malicious actor.
What is CVE-2021-22018?
The vulnerability exists in a VMware vSphere Life-cycle Manager plug-in within vCenter Server, allowing an unauthorized user to delete files over port 9087.
The Impact of CVE-2021-22018
If successfully exploited, the vulnerability could result in the deletion of non-critical files, potentially disrupting system operations or causing data loss.
Technical Details of CVE-2021-22018
The following technical details outline the vulnerability's specifics:
Vulnerability Description
An arbitrary file deletion vulnerability resides within a VMware vSphere Life-cycle Manager plug-in in vCenter Server, posing a risk of unauthorized file deletion.
Affected Systems and Versions
VMware vCenter Server 7.x versions before 7.0.2 U2d and VMware Cloud Foundation 4.x versions before 4.3.1 are vulnerable to this exploit.
Exploitation Mechanism
A malicious actor with network access to port 9087 on vCenter Server can exploit this vulnerability to delete files, potentially causing operational disruptions.
Mitigation and Prevention
Protecting systems from CVE-2021-22018 requires immediate action and long-term security measures to mitigate the risk of file deletion.
Immediate Steps to Take
- Apply the necessary security patches provided by VMware for VMware vCenter Server and VMware Cloud Foundation.
- Restrict network access to port 9087 to prevent unauthorized exploitation.
Long-Term Security Practices
- Regularly monitor and update security configurations to address emerging vulnerabilities promptly.
- Implement network segmentation and access controls to enhance system security.
Patching and Updates
Stay informed about security advisories and updates from VMware to ensure systems are protected from potential threats.