CVE-2021-22043

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.

CVSS v3 7.5 HIGH
CVSS v2.0 6.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:S/C:P/I:P/A:P

Exploitability : 6.8 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://www.vmware.com/security/advisories/VMSA-2022-0004.html	Patch Vendor Advisory
https://www.vmware.com/security/advisories/VMSA-2022-0004.html	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:vmware:fusion::::::::
	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::::::

History

21 Nov 2024, 05:49

Type	Values Removed	Values Added
References	~~() https://www.vmware.com/security/advisories/VMSA-2022-0004.html - Patch, Vendor Advisory~~	() https://www.vmware.com/security/advisories/VMSA-2022-0004.html - Patch, Vendor Advisory

Information

Published : 2022-02-16 17:15

Updated : 2024-11-21 05:49

NVD link : CVE-2021-22043

Mitre link : CVE-2021-22043

CVE.ORG link : CVE-2021-22043

JSON object : View

Products Affected

vmware

fusion
esxi

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

{"id": "CVE-2021-22043", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P", "authentication": "SINGLE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 6.8, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.6}]}, "published": "2022-02-16T17:15:10.593", "references": [{"url": "https://www.vmware.com/security/advisories/VMSA-2022-0004.html", "tags": ["Patch", "Vendor Advisory"], "source": "security@vmware.com"}, {"url": "https://www.vmware.com/security/advisories/VMSA-2022-0004.html", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-367"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "VMware ESXi contiene una vulnerabilidad TOCTOU (Time-of-check Time-of-use) que se presenta en la forma de manejar los archivos temporales. Un actor malicioso con acceso a settingsd, puede explotar este problema para escalar sus privilegios al escribir archivos arbitrarios"}], "lastModified": "2024-11-21T05:49:29.413", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vmware:fusion:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E834FF90-171F-4581-8AB2-AC55C1252DD4", "versionEndExcluding": "4.4"}, {"criteria": "cpe:2.3:o:vmware:esxi:7.0:update_1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2C8DB7F6-5765-4355-B30E-9CAC39ECA5D9"}, {"criteria": "cpe:2.3:o:vmware:esxi:7.0:update_2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D3E3A02D-6C1E-4DE8-B845-60F53C056F32"}, {"criteria": "cpe:2.3:o:vmware:esxi:7.0:update_3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4ADC3CFF-7415-46A5-817A-2F053B261E8C"}], "operator": "OR"}]}], "sourceIdentifier": "security@vmware.com"}

7.5 /10