CVE-2021-29972

A use-after-free vulnerability was found via testing, and traced to an out-of-date Cairo library. Updating the library resolved the issue, and may have remediated other, unknown security vulnerabilities as well. This vulnerability affects Firefox < 90.

CVSS v3 8.8 HIGH
CVSS v2.0 6.8 MEDIUM

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1696816	Exploit Issue Tracking Vendor Advisory
https://security.gentoo.org/glsa/202202-03	Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2021-28/	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2021-08-05 20:15

Updated : 2024-02-28 18:28

NVD link : CVE-2021-29972

Mitre link : CVE-2021-29972

CVE.ORG link : CVE-2021-29972

JSON object : View

Products Affected

mozilla

firefox

CWE

CWE-416

Use After Free

{"id": "CVE-2021-29972", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "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": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2021-08-05T20:15:08.620", "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1696816", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://security.gentoo.org/glsa/202202-03", "tags": ["Third Party Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2021-28/", "tags": ["Vendor Advisory"], "source": "security@mozilla.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "A use-after-free vulnerability was found via testing, and traced to an out-of-date Cairo library. Updating the library resolved the issue, and may have remediated other, unknown security vulnerabilities as well. This vulnerability affects Firefox < 90."}, {"lang": "es", "value": "Se ha encontrado una vulnerabilidad de uso de memoria previamente liberada por medio de pruebas, y se ha detectado una librer\u00eda Cairo desactualizada. La actualizaci\u00f3n de la biblioteca resolvi\u00f3 el problema, y puede haber corregido tambi\u00e9n otras vulnerabilidades de seguridad desconocidas. Esta vulnerabilidad afecta a Firefox versiones anteriores a 90"}], "lastModified": "2022-03-25T15:14:44.483", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FA0BA5A6-A40E-418E-A536-9A14711264B7", "versionEndExcluding": "90.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@mozilla.org"}