CVE-2021-25677

{"containers": {"cna": {"providerMetadata": {"orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77", "shortName": "siemens", "dateUpdated": "2023-08-08T09:20:07.625Z"}, "descriptions": [{"lang": "en", "value": "A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), SIMOTICS CONNECT 400 (All versions >= V0.5.0.0 < V1.0.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS client does not properly randomize DNS transaction IDs. That could allow an attacker to poison the DNS cache or spoof DNS resolving."}], "affected": [{"vendor": "Siemens", "product": "APOGEE PXC Compact (BACnet)", "versions": [{"version": "All versions < V3.5.5", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "APOGEE PXC Compact (P2 Ethernet)", "versions": [{"version": "All versions < V2.8.20", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "APOGEE PXC Modular (BACnet)", "versions": [{"version": "All versions < V3.5.5", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "APOGEE PXC Modular (P2 Ethernet)", "versions": [{"version": "All versions < V2.8.20", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "Nucleus NET", "versions": [{"version": "All versions", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "Nucleus ReadyStart V3", "versions": [{"version": "All versions < V2017.02.3", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "Nucleus ReadyStart V3", "versions": [{"version": "All versions < V2017.02.4", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "Nucleus ReadyStart V4", "versions": [{"version": "All versions < V4.1.0", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "Nucleus Source Code", "versions": [{"version": "Versions including affected DNS modules", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMOTICS CONNECT 400", "versions": [{"version": "All versions < V0.5.0.0", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMOTICS CONNECT 400", "versions": [{"version": "All versions >= V0.5.0.0 < V1.0.0.0", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "TALON TC Compact (BACnet)", "versions": [{"version": "All versions < V3.5.5", "status": "affected"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "TALON TC Modular (BACnet)", "versions": [{"version": "All versions < V3.5.5", "status": "affected"}], "defaultStatus": "unknown"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C", "baseScore": 5.3, "baseSeverity": "MEDIUM"}}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-330", "description": "CWE-330: Use of Insufficiently Random Values", "type": "CWE"}]}], "references": [{"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-705111.pdf"}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdf"}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf"}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:11:28.339Z"}, "title": "CVE Program Container", "references": [{"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-705111.pdf", "tags": ["x_transferred"]}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdf", "tags": ["x_transferred"]}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf", "tags": ["x_transferred"]}]}]}, "cveMetadata": {"assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77", "assignerShortName": "siemens", "cveId": "CVE-2021-25677", "datePublished": "2021-04-22T20:42:21.000Z", "dateReserved": "2021-01-21T00:00:00.000Z", "dateUpdated": "2024-08-03T20:11:28.339Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "APOGEE PXC Compact (BACnet)", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V3.5.5"}]}, {"defaultStatus": "unknown", "product": "APOGEE PXC Compact (P2 Ethernet)", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V2.8.20"}]}, {"defaultStatus": "unknown", "product": "APOGEE PXC Modular (BACnet)", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V3.5.5"}]}, {"defaultStatus": "unknown", "product": "APOGEE PXC Modular (P2 Ethernet)", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V2.8.20"}]}, {"defaultStatus": "unknown", "product": "Nucleus NET", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions"}]}, {"defaultStatus": "unknown", "product": "Nucleus ReadyStart V3", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V2017.02.3"}]}, {"defaultStatus": "unknown", "product": "Nucleus ReadyStart V3", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V2017.02.4"}]}, {"defaultStatus": "unknown", "product": "Nucleus ReadyStart V4", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V4.1.0"}]}, {"defaultStatus": "unknown", "product": "Nucleus Source Code", "vendor": "Siemens", "versions": [{"status": "affected", "version": "Versions including affected DNS modules"}]}, {"defaultStatus": "unknown", "product": "SIMOTICS CONNECT 400", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V0.5.0.0"}]}, {"defaultStatus": "unknown", "product": "SIMOTICS CONNECT 400", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions >= V0.5.0.0 < V1.0.0.0"}]}, {"defaultStatus": "unknown", "product": "TALON TC Compact (BACnet)", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V3.5.5"}]}, {"defaultStatus": "unknown", "product": "TALON TC Modular (BACnet)", "vendor": "Siemens", "versions": [{"status": "affected", "version": "All versions < V3.5.5"}]}], "source": "productcert@siemens.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:siemens:simotics_connect_400_firmware:*:*:*:*:*:*:*:*", "matchCriteriaId": "374052C8-5A98-4404-B029-72D2404A7036", "versionStartIncluding": "0.5.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:siemens:simotics_connect_400:-:*:*:*:*:*:*:*", "matchCriteriaId": "48BFF9EF-D1C1-4107-8D1E-51315C03FFF0", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*", "matchCriteriaId": "7A987CFB-4A41-4F82-8C7F-31DE8F0650DE", "vulnerable": true}, {"criteria": "cpe:2.3:a:siemens:nucleus_readystart_v3:*:*:*:*:*:*:*:*", "matchCriteriaId": "C2F36C9F-E4F4-4678-B82D-361F4818B66C", "versionEndExcluding": "2017.02.4", "vulnerable": true}, {"criteria": "cpe:2.3:a:siemens:nucleus_readystart_v4:*:*:*:*:*:*:*:*", "matchCriteriaId": "B35FDE44-BE25-431D-B2EE-195ACC5A606C", "versionEndExcluding": "4.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:siemens:nucleus_source_code:-:*:*:*:*:*:*:*", "matchCriteriaId": "53A38C64-612A-4BC5-83D5-D3FA1C90E0F7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.3), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus ReadyStart V4 (All versions < V4.1.0), Nucleus Source Code (Versions including affected DNS modules), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), SIMOTICS CONNECT 400 (All versions >= V0.5.0.0 < V1.0.0.0), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS client does not properly randomize DNS transaction IDs. That could allow an attacker to poison the DNS cache or spoof DNS resolving."}, {"lang": "es", "value": "Se ha identificado una vulnerabilidad en Nucleus NET (Todas las versiones), Nucleus ReadyStart V3 (Todas las versiones anteriores a la versi\u00f3n V2017.02.3), Nucleus ReadyStart V4 (Todas las versiones anteriores a la versi\u00f3n V4.1.0), Nucleus Source Code (Versiones que incluyen los m\u00f3dulos DNS afectados), SIMOTICS CONNECT 400 (Todas las versiones anteriores a la versi\u00f3n V0.5.0.0), SIMOTICS CONNECT 400 (Todas las versiones posteriores o iguales a la versi\u00f3n V0.5.0.0 anteriores a la versi\u00f3n V1.0.0). El cliente DNS no aleatoriza correctamente los ID de las transacciones DNS. Esto podr\u00eda permitir a un atacante envenenar la cach\u00e9 DNS o falsificar la resoluci\u00f3n DNS"}], "id": "CVE-2021-25677", "lastModified": "2026-06-17T03:42:20.547", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "productcert@siemens.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-04-22T21:15:10.207", "references": [{"source": "productcert@siemens.com", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf"}, {"source": "productcert@siemens.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdf"}, {"source": "productcert@siemens.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-705111.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-669158.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-705111.pdf"}], "sourceIdentifier": "productcert@siemens.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-330"}], "source": "productcert@siemens.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-330"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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