Third-party Vulnerability

BD is aware of and currently monitoring multiple VMware vulnerabilities affecting VMware ESXi, Workstation, Fusion and NSX-T. These third-party vulnerabilities, which VMware corrected with their Oct. 20, 2020 patch release, are not specific to BD or our products. Additionally, we have not received any reports of these vulnerabilities being exploited on BD products. Please see below for a list of BD products associated with these VMware components. Note that not all BD products listed in this bulletin are in scope for each CVE.

• CVE-2020-3992: ESXi OpenSLP remote code execution vulnerability. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remote code execution. To exploit this vulnerability, an unauthorized user would need to first penetrate the management network.

• CVE-2020-3993: NSX-T MITM vulnerability. VMware NSX-T contains a security vulnerability that exists in the way it allows a Kernel-based Virtual Machine (KVM) host to download and install packages from NSX manager. A malicious actor with MITM positioning may be able to exploit this issue to compromise the transport node.

• CVE-2020-3981: TOCTOU out-of-bounds read vulnerability. VMware ESXi, Workstation and Fusion contain an out-of-bounds read vulnerability due to a time-of-check time-of-use issue in Advanced Configuration and Power interface (ACPI) device. A malicious actor with administrative access to a virtual machine may be able to exploit this issue to leak memory from the vmx process.

• CVE-2020-3982: TOCTOU out-of-bounds write vulnerability. VMware ESXi, Workstation and Fusion contain an out-of-bounds write vulnerability due to a time-of-check time-of-use issue in ACPI device. A malicious actor with administrative access to a virtual machine may be able to exploit this vulnerability to crash the virtual machine's vmx process or corrupt hypervisor's memory heap.

• CVE-2020-3994: vCenter Server session hijack vulnerability in update function. VMware vCenter Server contains a session hijack vulnerability in the vCenter Server Appliance Management Interface update function due to a lack of certificate validation. A malicious actor with network positioning between vCenter Server and an update repository may be able to perform a session hijack when the vCenter Server Appliance Management Interface is used to download vCenter updates.

• CVE-2020-3995: VMCI host driver memory leak vulnerability. The VMCI host drivers used by VMware hypervisors contain a memory leak vulnerability. A malicious actor with access to a virtual machine may be able to trigger a memory leak issue resulting in memory resource exhaustion on the hypervisor if the attack is sustained for extended periods of time.