CVE-2021-23971

When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy. This would have potentially resulted in more information than intended by the original origin being provided to the destination of the redirect. This vulnerability affects Firefox < 86.

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://bugzilla.mozilla.org/show_bug.cgi?id=1678545	Issue Tracking Permissions Required Vendor Advisory
https://security.gentoo.org/glsa/202104-10	Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2021-07/	Release Notes Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-02-26 02:15

Updated : 2024-02-28 18:08

NVD link : CVE-2021-23971

Mitre link : CVE-2021-23971

CVE.ORG link : CVE-2021-23971

JSON object : View

Products Affected

mozilla

firefox

CWE

NVD-CWE-noinfo

{"id": "CVE-2021-23971", "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": "2021-02-26T02:15:13.103", "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1678545", "tags": ["Issue Tracking", "Permissions Required", "Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://security.gentoo.org/glsa/202104-10", "tags": ["Third Party Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2021-07/", "tags": ["Release Notes", "Vendor Advisory"], "source": "security@mozilla.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "When processing a redirect with a conflicting Referrer-Policy, Firefox would have adopted the redirect's Referrer-Policy. This would have potentially resulted in more information than intended by the original origin being provided to the destination of the redirect. This vulnerability affects Firefox < 86."}, {"lang": "es", "value": "Cuando se procesa un redireccionamiento con una Pol\u00edtica de Referencia en conflicto, Firefox habr\u00eda adoptado la Pol\u00edtica de Referencia de redireccionamiento. Esto podr\u00eda haber conllevado a que se proporcionara m\u00e1s informaci\u00f3n de la que pretend\u00eda mediante la fuente original hacia el destino del redireccionamiento. Esta vulnerabilidad afecta a Firefox versiones anteriores a 86"}], "lastModified": "2022-05-27T18:04:16.660", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "89580DC6-183F-46F0-A27E-4E16D6B10EB6", "versionEndExcluding": "86.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@mozilla.org"}