Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-22043

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
16/02/2022
Last modified:
24/02/2022

Description

VMware ESXi contains a TOCTOU (Time-of-check Time-of-use) vulnerability that exists in the way temporary files are handled. A malicious actor with access to settingsd, may exploit this issue to escalate their privileges by writing arbitrary files.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:S/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.00 MEDIUM
Vector: AV:N/AC:M/Au:S/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): Single
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
6.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:vmware:fusion:*:*:*:*:*:*:*:* 4.4 (excluding)
cpe:2.3:o:vmware:esxi:7.0:update_1:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_2:*:*:*:*:*:*
cpe:2.3:o:vmware:esxi:7.0:update_3:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools