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Our team delivers the fastest response time in the industry. Threat suppression within just 4 hours of being engaged.
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Our Threat Response Unit (TRU) publishes security advisories, blogs, reports, industry publications and webinars based on its original research and the insights driven through proactive threat hunts.
eSentire is The Authority in Managed Detection and Response Services, protecting the critical data and applications of 2000+ organizations in 80+ countries from known and unknown cyber threats. Founded in 2001, the company's mission is to hunt, investigate and stop cyber threats before they become business disrupting events.
We provide sophisticated cybersecurity solutions for Managed Security Service Providers (MSSPs), Managed Service Providers (MSPs), and Value-Added Resellers (VARs). Find out why you should partner with eSentire, the Authority in Managed Detection and Response, today.
We believe a multi-signal approach is paramount to protecting your complete attack surface. See why eSentire MDR means multi-signal telemetry and complete response.
See how our 24/7 SOC Cyber Analysts and Elite Threat Hunters stop even the most advanced cyberattacks before they disrupt your business.
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Read the latest security advisories, blogs, reports, industry publications and webinars published by eSentire's Threat Response Unit (TRU).
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THE THREAT
On February 23rd, 2021, VMware disclosed a critical vulnerability impacting vCenter Servers. The vulnerability, tracked as CVE-2021-21972, allows for remote code execution and if exploited, could result in the full compromise of affected systems. Abuse of this vulnerability does not require authentication or user interaction.
Exploitation of CVE-2021-21972 has not been identified in the wild at this time. Due to the ease of exploitation and high severity (9.8/10), it is likely that threat actors will abuse this vulnerability in the near future. Organizations are recommended to apply the official VMware patch as soon as possible.
What we’re doing about it
What you should do about it
Additional information
CVE-2021-21972 is due to issues found in the vSphere Client (HTML5) in vCenter Server plugin. Confirmed impacted vCenter Servers include versions 6.5, 6.7, and 7.
Proof-of-Concept (POC) code and technical details for CVE-2021-21972 were released on February 24th. This release will decrease the amount of time before exploitation occurs in the wild.
In an attack scenario, a threat actor with network access to port 443 could exploit this issue. The threat actor would then be able to execute commands on the vulnerable system with unrested privileges. No previous authentication or privileges are required.
In the same release, VMware announced patches for two other vulnerabilities:
References:
[1] https://www.vmware.com/security/advisories/VMSA-2021-0002.html