CVE-2021-29945

{"id": "CVE-2021-29945", "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:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "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:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2021-06-24T14:15:09.763", "references": [{"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1700690", "tags": ["Issue Tracking", "Permissions Required", "Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2021-14/", "tags": ["Release Notes", "Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2021-15/", "tags": ["Release Notes", "Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2021-16/", "tags": ["Release Notes", "Vendor Advisory"], "source": "security@mozilla.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-682"}]}], "descriptions": [{"lang": "en", "value": "The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and result in a crash. *Note: This issue only affected x86-32 platforms. Other platforms are unaffected.*. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88."}, {"lang": "es", "value": "El JIT de WebAssembly pod\u00eda calcular mal el tama\u00f1o de un tipo de retorno, lo que pod\u00eda conllevar a una lectura nula y resultar en un bloqueo. *Nota: Este problema s\u00f3lo afectaba a las plataformas x86-32. Otras plataformas no est\u00e1n afectadas. Esta vulnerabilidad afecta a Firefox ESR versiones anteriores a 78.10, Thunderbird versiones anteriores a 78.10 y Firefox versiones anteriores a 88"}], "lastModified": "2021-06-30T19:01:06.930", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:x86:*", "vulnerable": true, "matchCriteriaId": "93A024F9-E2A3-4F13-83A3-879EAC032592", "versionEndExcluding": "88.0"}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:x86:*", "vulnerable": true, "matchCriteriaId": "504327C0-E11F-4EAC-9ED3-8BEA4C40DD0C", "versionEndExcluding": "78.10"}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:x86:*", "vulnerable": true, "matchCriteriaId": "65A9C7EC-D89C-4C03-841E-9DFED53E5795", "versionEndExcluding": "78.10"}], "operator": "OR"}]}], "sourceIdentifier": "security@mozilla.org"}