CVE-2020-3976 Denial of service in ESXi, vCenter Server, and Cloud Foundation
Attackers can cause a partial denial of service in VMware ESXi and vCenter Server authentication services, disrupting availability for administrators.
- 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-2020-3976?
CVE-2020-3976 is a medium-severity denial of service vulnerability in Vmware Cloud Foundation, published on 21 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
VMware ESXi and vCenter Server contain a partial denial of service vulnerability in their respective authentication services. VMware has evaluated the severity of this issue to be in the Moderate severity range with a maximum CVSSv3 base score of 5.3.
Weakness: CWE-400
Which versions are affected by CVE-2020-3976?
It affects 3 products.
Products include Vmware Cloud Foundation, Vmware Esxi, Vmware Vcenter Server.
How do I fix CVE-2020-3976?
No fix has been published for CVE-2020-3976 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-3976 being exploited?
There is no known exploitation of CVE-2020-3976 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-5xrm-7qcf-99pq.