CVE-2021-21126

Insufficient policy enforcement in extensions in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass site isolation via a crafted Chrome Extension.

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html	Release Notes Vendor Advisory
https://crbug.com/1108126	Permissions Required Third Party Advisory
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21126	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:google:chrome::::::::
	cpe:2.3:a:microsoft:edge_chromium::::::::

History

08 Aug 2023, 14:21

Type	Values Removed	Values Added
CWE	~~CWE-287~~	CWE-20

Information

Published : 2021-02-09 14:15

Updated : 2024-02-04 21:23

NVD link : CVE-2021-21126

Mitre link : CVE-2021-21126

CVE.ORG link : CVE-2021-21126

JSON object : View

Products Affected

microsoft

edge_chromium

google

chrome

CWE

CWE-20

Improper Input Validation

{"id": "CVE-2021-21126", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2021-02-09T14:15:16.013", "references": [{"url": "https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html", "tags": ["Release Notes", "Vendor Advisory"], "source": "chrome-cve-admin@google.com"}, {"url": "https://crbug.com/1108126", "tags": ["Permissions Required", "Third Party Advisory"], "source": "chrome-cve-admin@google.com"}, {"url": "https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21126", "tags": ["Third Party Advisory"], "source": "chrome-cve-admin@google.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "Insufficient policy enforcement in extensions in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass site isolation via a crafted Chrome Extension."}, {"lang": "es", "value": "Una aplicaci\u00f3n de pol\u00edticas insuficientes en extensions de Google Chrome versiones anteriores a 88.0.4324.96, permiti\u00f3 a un atacante remoto omitir el aislamiento del sitio por medio de una Extension de Chrome dise\u00f1ada"}], "lastModified": "2023-08-08T14:21:49.707", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "565ED6B8-8F41-4E79-A280-33CB321E607F", "versionEndExcluding": "88.0.4324.96"}, {"criteria": "cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F4045760-DF4A-4728-9B52-0280FC45C05D", "versionEndExcluding": "88.0.705.50"}], "operator": "OR"}]}], "sourceIdentifier": "chrome-cve-admin@google.com"}