CVE-2021-31401

{"id": "CVE-2021-31401", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2021-08-19T12:15:08.893", "references": [{"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdf", "tags": ["Mitigation", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/", "tags": ["Mitigation", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.kb.cert.org/vuls/id/608209", "tags": ["Third Party Advisory", "US Government Resource"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in tcp_rcv() in nptcp.c in HCC embedded InterNiche 4.0.1. The TCP header processing code doesn't sanitize the value of the IP total length field (header length + data length). With a crafted IP packet, an integer overflow occurs whenever the value of the IP data length is calculated by subtracting the length of the header from the total length of the IP packet."}, {"lang": "es", "value": "Se ha detectado un problema en la funci\u00f3n tcp_rcv() en el archivo nptcp.c en HCC embedded InterNiche versi\u00f3n 4.0.1. El c\u00f3digo de procesamiento del encabezado TCP no sanea el valor del campo de longitud total de IP (longitud del encabezado + longitud de los datos). Con un paquete IP dise\u00f1ado, se produce un desbordamiento de enteros cuando el valor de la longitud de datos IP se calcula restando la longitud del encabezado de la longitud total del paquete IP."}], "lastModified": "2021-08-26T18:09:19.857", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:hcc-embedded:nichestack:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "36A27EF5-D19C-4126-850C-89387A7A1410", "versionEndExcluding": "4.3"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:siemens:sentron_3wl_com35_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "438332F0-E222-48FB-BA95-0A79EAC9E448", "versionEndExcluding": "1.2.0"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:siemens:sentron_3wl_com35:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "AF6988F4-8734-4B27-AD0B-B91F25654F9A"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:siemens:sentron_3wa_com190_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B62056DC-DF99-4118-9B22-45E51980CD7F", "versionEndExcluding": "2.0.0"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:siemens:sentron_3wa_com190:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "797EAA6F-5E8C-4855-87ED-CE4D76D02571"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}