{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2021-43527", "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "assignerShortName": "mozilla", "dateUpdated": "2022-12-19T00:00:00", "dateReserved": "2021-11-08T00:00:00", "datePublished": "2021-12-08T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2022-12-19T00:00:00"}, "descriptions": [{"lang": "en", "value": "NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures encoded within CMS, S/MIME, PKCS \\#7, or PKCS \\#12 are likely to be impacted. Applications using NSS for certificate validation or other TLS, X.509, OCSP or CRL functionality may be impacted, depending on how they configure NSS. *Note: This vulnerability does NOT impact Mozilla Firefox.* However, email clients and PDF viewers that use NSS for signature verification, such as Thunderbird, LibreOffice, Evolution and Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1."}], "affected": [{"vendor": "Mozilla", "product": "NSS", "versions": [{"version": "unspecified", "lessThan": "3.73", "status": "affected", "versionType": "custom"}, {"version": "unspecified", "lessThan": "3.68.1", "status": "affected", "versionType": "custom"}]}], "references": [{"url": "https://www.mozilla.org/security/advisories/mfsa2021-51/"}, {"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1737470"}, {"url": "https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/"}, {"url": "https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/"}, {"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"}, {"url": "https://security.netapp.com/advisory/ntap-20211229-0002/"}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf"}, {"url": "https://www.starwindsoftware.com/security/sw-20220802-0001/"}, {"name": "GLSA-202212-05", "tags": ["vendor-advisory"], "url": "https://security.gentoo.org/glsa/202212-05"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "Memory corruption via DER-encoded DSA and RSA-PSS signatures"}]}]}}}

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Las aplicaciones que usan NSS para la comprobaci\u00f3n de certificados u otras funcionalidades de TLS, X.509, OCSP o CRL pueden verse afectadas, dependiendo de c\u00f3mo configuren NSS. *Nota: Esta vulnerabilidad NO afecta a Mozilla Firefox. Sin embargo, se cree que los clientes de correo electr\u00f3nico y los visores de PDF que usan NSS para la verificaci\u00f3n de firmas, como Thunderbird, LibreOffice, Evolution y Evince, pueden verse afectados. Esta vulnerabilidad afecta a NSS versiones anteriores a 3.73 y NSS versiones anteriores a 3.68.1"}], "id": "CVE-2021-43527", "lastModified": "2023-02-23T01:40:31.327", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-12-08T22:15:09.163", "references": [{"source": "security@mozilla.org", "tags": ["Issue Tracking", "Permissions Required", "Vendor Advisory"], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1737470"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-594438.pdf"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_68_1_RTM/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_73_RTM/"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202212-05"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20211229-0002/"}, {"source": "security@mozilla.org", "tags": ["Vendor Advisory"], "url": "https://www.mozilla.org/security/advisories/mfsa2021-51/"}, {"source": "security@mozilla.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"}, {"source": "security@mozilla.org", "tags": ["Third Party Advisory"], "url": "https://www.starwindsoftware.com/security/sw-20220802-0001/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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