CVE-2023-20867 — VMware Tools Authentication Bypass Vulnerability
CVE-2023-20867: VMware Tools Authentication Bypass Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | VMware |
| Product | Tools |
| Date added | 2023-06-23 |
| Due date | 2023-07-14 |
| Ransomware campaign use | Unknown |
Description
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.
Required action (CISA)
Apply updates per vendor instructions.
Notes
https://www.vmware.com/security/advisories/VMSA-2023-0013.html; https://nvd.nist.gov/vuln/detail/CVE-2023-20867
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-20867
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog