CVE-2021-21986 Missing authorization in VMware vCenter Server and VMware Cloud Foundation
Unauthenticated attackers can perform actions via vSphere plug-ins on vCenter Server, leading to unauthorized access and potential privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-21986?
CVE-2021-21986 is a critical missing authorization vulnerability in Vmware Cloud Foundation, published on 26 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The vSphere Client (HTML5) contains a vulnerability in a vSphere authentication mechanism for the Virtual SAN Health Check, Site Recovery, vSphere Lifecycle Manager, and VMware Cloud Director Availability plug-ins. A malicious actor with network access to port 443 on vCenter Server may perform actions allowed by the impacted plug-ins without authentication.
Weakness: CWE-306
Which versions are affected by CVE-2021-21986?
It affects 2 products.
Products include Vmware Cloud Foundation, Vmware Vcenter Server.
How do I fix CVE-2021-21986?
No fix has been published for CVE-2021-21986 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-21986 being exploited?
There is no known exploitation of CVE-2021-21986 in the wild and no public exploit code.
Other vulnerabilities in Vmware Cloud Foundation
- CVE-2024-38812 VMware vCenter Server Heap-Based Buffer Overflow
- CVE-2024-37079 Broadcom VMware vCenter Server Out-of-bounds Write
- CVE-2022-22954 VMware Workspace ONE Access and Identity Manager Server-Side Template Injection
- CVE-2021-22005 VMware vCenter Server File Upload
- CVE-2021-21985 VMware vCenter Server Improper Input Validation
Sources
Also known as GHSA-6qhw-394j-xwvg.