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VMSA-2020-0023 : VMware ESXi, Workstation, Fusion and NSX-T updates address multiple security vulnerabilities

Description

a. ESXi OpenSLP remote code execution vulnerability (CVE-2020-3992) OpenSLP as used in ESXi has a use-after-free issue. 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. c. TOCTOU out-of-bounds read vulnerability (CVE-2020-3981) VMware ESXi contains an out-of-bounds read 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 issue to leak memory from the vmx process. d. TOCTOU out-of-bounds write vulnerability (CVE-2020-3982) VMware ESXi contains 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 hypervisors memory heap. f. VMCI host driver memory leak vulnerability (CVE-2020-3995) 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.


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