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.
Published 2023-06-13 17:15:14
Updated 2023-10-16 18:15:16
Source VMware
View at NVD,   CVE.org
Vulnerability category: BypassGain privilege

CVE-2023-20867 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
VMware Tools Authentication Bypass Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA 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 E
Notes:
https://www.vmware.com/security/advisories/VMSA-2023-0013.html
Added on 2023-06-23 Action due date 2023-07-14

Exploit prediction scoring system (EPSS) score for CVE-2023-20867

0.16%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 52 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-20867

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
3.9
LOW CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
0.8
2.7
NIST
3.9
LOW CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
0.8
2.7
VMware

CWE ids for CVE-2023-20867

  • When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
    Assigned by:
    • nvd@nist.gov (Primary)
    • security@vmware.com (Secondary)

References for CVE-2023-20867

Products affected by CVE-2023-20867

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