{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2020-12403", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "assignerShortName": "mozilla", "dateUpdated": "2023-03-24T00:00:00", "dateReserved": "2020-04-28T00:00:00", "datePublished": "2021-05-27T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2023-03-24T00:00:00"}, "descriptions": [{"lang": "en", "value": "A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS in versions before 3.55. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from this vulnerability is to confidentiality and system availability."}], "affected": [{"vendor": "n/a", "product": "nss", "versions": [{"version": "nss 3.55", "status": "affected"}]}], "references": [{"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1868931"}, {"url": "https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.55_release_notes"}, {"name": "[debian-lts-announce] 20230220 [SECURITY] [DLA 3327-1] nss security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html"}, {"url": "https://security.netapp.com/advisory/ntap-20230324-0006/"}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-125", "cweId": "CWE-125"}]}]}}}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:nss:*:*:*:*:*:*:*:*", "matchCriteriaId": "D021F308-A866-4FB1-ADF1-F00FDBFCCFF6", "versionEndExcluding": "3.55", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS in versions before 3.55. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from this vulnerability is to confidentiality and system availability."}, {"lang": "es", "value": "Se encontr\u00f3 un fallo en la manera en que se implement\u00f3 CHACHA20-POLY1305 en NSS en versiones anteriores a 3.55. Cuando es usado Chacha20 de m\u00faltiples partes, podr\u00eda causar lecturas fuera de l\u00edmites. Este problema fue corregido al desactivar expl\u00edcitamente ChaCha20 de m\u00faltiples partes (que no funcionaba correctamente) y aplicando estrictamente la longitud de la etiqueta. La mayor amenaza de esta vulnerabilidad es la confidencialidad y la disponibilidad del sistema"}], "id": "CVE-2020-12403", "lastModified": "2023-03-24T16:15:07.843", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.4, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-05-27T19:15:07.953", "references": [{"source": "security@mozilla.org", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1868931"}, {"source": "security@mozilla.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.55_release_notes"}, {"source": "security@mozilla.org", "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00021.html"}, {"source": "security@mozilla.org", "url": "https://security.netapp.com/advisory/ntap-20230324-0006/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-125"}], "source": "security@mozilla.org", "type": "Secondary"}]}

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