cyfenced.com →

[ CVE-2023-20867 · Published 13 Jun 2023 ]

VMware Tools Authentication Bypass Vulnerability

Exploited · CISA KEV CVSS 3.9 EPSS 14%Fix available

[ Why it matters ]Priority signals

  • Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2023-06-23
  • EPSS: 14% chance of exploitation in the next 30 days (higher than 96% of CVEs)

[ Description ]Official description

A fully compromised ESXi host can force VMware Tools to fail to authenticate host-to-guest operations, impacting the confidentiality and integrity of the guest virtual machine.

CISA: VMware Tools contains an authentication bypass vulnerability in the vgauth module. A fully compromised ESXi host can force VMware Tools to fail to authenticate host-to-guest operations, impacting the confidentiality and integrity of the guest virtual machine. An attacker must have root access over ESXi to exploit this vulnerability.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 14 Jul 2023): Apply updates per vendor instructions.

[ References ]References