{"id": "CVE-2020-6998", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2020-6998", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2025-04-17T14:34:30.818711Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "ics-cert@hq.dhs.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.8, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.6, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 3.9}]}, "affected": [{"source": "ics-cert@hq.dhs.gov", "affectedData": [{"vendor": "Rockwell Automation", "product": "Armor Compact GuardLogix 5370 controllers", "versions": [{"status": "affected", "version": "unspecified", "versionType": "custom", "lessThanOrEqual": "versions 33 and prior"}]}, {"vendor": "Rockwell Automation", "product": "Armor GuardLogix Safety Controllers", "versions": [{"status": "affected", "version": "unspecified", "versionType": "custom", "lessThanOrEqual": "versions 33 and prior"}]}, {"vendor": "Rockwell Automation", "product": "CompactLogix 5370 L1 controllers", "versions": [{"status": "affected", "version": "unspecified", "versionType": "custom", "lessThanOrEqual": "versions 33 and prior"}]}, {"vendor": "Rockwell Automation", "product": "CompactLogix 5370 L2 controllers", "versions": [{"status": "affected", "version": "unspecified", "versionType": "custom", "lessThanOrEqual": "versions 33 and prior"}]}, {"vendor": "Rockwell Automation", "product": "CompactLogix 5370 L3 controllers", "versions": [{"status": "affected", "version": "unspecified", "versionType": "custom", "lessThanOrEqual": "versions 33 and prior"}]}, {"vendor": "Rockwell Automation", "product": "Compact GuardLogix 5370 controllers", "versions": [{"status": "affected", "version": "unspecified", "versionType": "custom", "lessThanOrEqual": "versions 33 and prior"}]}, {"vendor": "Rockwell Automation", "product": "ControlLogix 5570 controllers", "versions": [{"status": "affected", "version": "unspecified", "versionType": "custom", "lessThanOrEqual": "versions 33 and prior"}]}]}], "published": "2022-07-27T21:15:08.297", "references": [{"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1130398", "tags": ["Permissions Required", "Vendor Advisory"], "source": "ics-cert@hq.dhs.gov"}, {"url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-061-02", "tags": ["Third Party Advisory", "US Government Resource"], "source": "ics-cert@hq.dhs.gov"}, {"url": "https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1130398", "tags": ["Permissions Required", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.cisa.gov/uscert/ics/advisories/icsa-21-061-02", "tags": ["Third Party Advisory", "US Government Resource"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-20"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-20"}]}], "descriptions": [{"lang": "en", "value": "The connection establishment algorithm found in Rockwell Automation CompactLogix 5370 and ControlLogix 5570 versions 33 and prior does not sufficiently manage its control flow during execution, creating an infinite loop. This may allow an attacker to send specially crafted CIP packet requests to a controller, which may cause denial-of-service conditions in communications with other products."}, {"lang": "es", "value": "El algoritmo de establecimiento de conexi\u00f3n encontrado en Rockwell Automation CompactLogix 5370 and ControlLogix 5570 versiones 33 y anteriores, no administra suficientemente su flujo de control durante la ejecuci\u00f3n, creando un bucle infinito. Esto puede permitir a un atacante enviar peticiones de paquetes CIP especialmente dise\u00f1ados a un controlador, lo que puede causar condiciones de denegaci\u00f3n de servicio en las comunicaciones con otros productos"}], "lastModified": "2026-06-17T03:24:05.747", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:rockwellautomation:armor_compact_guardlogix_5370_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "13D07CA5-B2C0-483D-A183-60BAD0F6BA65", "versionEndIncluding": "33"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:rockwellautomation:armor_compact_guardlogix_5370:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "03FAA30B-C345-4DD4-A686-50989ADF4CC5"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:rockwellautomation:compact_guardlogix_5370_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "797BDE9D-193A-4D9B-A38C-B199C99CE958", "versionEndIncluding": "33"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:rockwellautomation:compact_guardlogix_5370:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "6F951670-AF4D-4429-8BC1-79BDEF83B2C3"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:rockwellautomation:compactlogix_5370_l1_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02304C1E-786D-4281-8854-6B626F201A29", "versionEndIncluding": "33"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:rockwellautomation:compactlogix_5370_l1:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "848B3145-24E4-445B-958A-4C3F84C4546C"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:rockwellautomation:compactlogix_5370_l2_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "786B2806-A81A-4160-804A-AE9B2C445D65", "versionEndIncluding": "33"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:rockwellautomation:compactlogix_5370_l2:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "65092726-5567-488C-9E32-DC42D34E111D"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:rockwellautomation:compactlogix_5370_l3_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4274AF4D-445F-454D-8B08-B03B39A5AD5F", "versionEndIncluding": "33"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:rockwellautomation:compactlogix_5370_l3:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "52C2F377-6F0D-4752-A4A3-C40604A8575D"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:rockwellautomation:controllogix_5570_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "235662B8-4F63-4D1F-9091-8271B85BDB17", "versionEndIncluding": "33"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:rockwellautomation:controllogix_5570:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "482E2CD6-D484-486C-92F4-18432D107E30"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:rockwellautomation:guardlogix_5560_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BC99B037-69C1-4475-B65E-046CA020806A", "versionEndIncluding": "33"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:rockwellautomation:guardlogix_5560:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "7A42D9BC-9468-479A-873D-52175687FCBD"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:rockwellautomation:guardlogix_5570_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DA97F17B-E8B2-4FF6-A8D8-69D8F6B17F2F", "versionEndIncluding": "33"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:rockwellautomation:guardlogix_5570:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "321AE938-192A-4342-8608-ADC81F0B6582"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:rockwellautomation:guardlogix_5580_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A56F5CA1-02BF-4AC2-9963-F09E8390EC92", "versionEndIncluding": "33"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:rockwellautomation:guardlogix_5580:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "006B7683-9FDF-4748-BA28-2EA22613E092"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "ics-cert@hq.dhs.gov"}
