CVE-2021-27477 (GCVE-0-2021-27477)

Vulnerability from cvelistv5 – Published: 2021-07-01 12:01 – Updated: 2024-08-03 20:48
VLAI?
Summary
When JTEKT Corporation TOYOPUC PLC versions PC10G-CPU, 2PORT-EFR, Plus CPU, Plus EX, Plus EX2, Plus EFR, Plus EFR2, Plus 2P-EFR, PC10P-DP, PC10P-DP-IO, Plus BUS-EX, Nano 10GX, Nano 2ET,PC10PE, PC10PE-16/16P, PC10E, FL/ET-T-V2H, PC10B,PC10B-P, Nano CPU, PC10P, and PC10GE receive an invalid frame, the outside area of a receive buffer for FL-net are overwritten. As a result, the PLC CPU detects a system error, and the affected products stop.
Severity ?
No CVSS data available.
CWE
  • CWE-119 - IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER CWE-119
Assigner
References
Impacted products
Vendor Product Version
n/a JTEKT Corporation TOYOPUC PLC Affected: The following versions of the PLC are affected: PC10G-CPU, 2PORT-EFR, Plus CPU, Plus EX, Plus EX2, Plus EFR, Plus EFR2, Plus 2P-EFR, PC10P-DP, PC10P-DP-IO, Plus BUS-EX, Nano 10GX, Nano 2ET,PC10PE, PC10PE-16/16P, PC10E, FL/ET-T-V2H, PC10B,PC10B-P, Nano CPU, PC10P, PC10GE.
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      "id": "CVE-2021-27477",
      "lastModified": "2024-11-21T05:58:04.313",
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      "published": "2021-07-01T13:15:08.003",
      "references": "[{\"url\": \"https://us-cert.cisa.gov/ics/advisories/icsa-21-180-04\", \"source\": \"ics-cert@hq.dhs.gov\", \"tags\": [\"Third Party Advisory\", \"US Government Resource\"]}, {\"url\": \"https://us-cert.cisa.gov/ics/advisories/icsa-21-180-04\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\", \"US Government Resource\"]}]",
      "sourceIdentifier": "ics-cert@hq.dhs.gov",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"ics-cert@hq.dhs.gov\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-119\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-787\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-27477\",\"sourceIdentifier\":\"ics-cert@hq.dhs.gov\",\"published\":\"2021-07-01T13:15:08.003\",\"lastModified\":\"2024-11-21T05:58:04.313\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"When JTEKT Corporation TOYOPUC PLC versions PC10G-CPU, 2PORT-EFR, Plus CPU, Plus EX, Plus EX2, Plus EFR, Plus EFR2, Plus 2P-EFR, PC10P-DP, PC10P-DP-IO, Plus BUS-EX, Nano 10GX, Nano 2ET,PC10PE, PC10PE-16/16P, PC10E, FL/ET-T-V2H, PC10B,PC10B-P, Nano CPU, PC10P, and PC10GE receive an invalid frame, the outside area of a receive buffer for FL-net are overwritten. As a result, the PLC CPU detects a system error, and the affected products stop.\"},{\"lang\":\"es\",\"value\":\"Cuando JTEKT Corporation TOYOPUC PLC versiones PC10G-CPU, 2PORT-EFR, Plus CPU, Plus EX, Plus EX2, Plus EFR, Plus EFR2, Plus 2P-EFR, PC10P-DP, PC10P-DP-IO, Plus BUS-EX, Nano 10GX, Nano 2ET,PC10PE, PC10PE-16/16P, PC10E, FL/ET-T-V2H, PC10B,PC10B-P, Nano CPU, PC10P y PC10GE reciben una trama no v\u00e1lida, el \u00e1rea exterior de un b\u00fafer de recepci\u00f3n para FL-net se sobrescribe. Como resultado, la CPU del PLC detecta un error del sistema y los productos afectados se detienen\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:N/A:C\",\"baseScore\":7.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":6.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"ics-cert@hq.dhs.gov\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:jtekt:pc10g-cpu_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.91\",\"matchCriteriaId\":\"22D9DDA3-97E5-4126-A25C-B97CC4E0ECB1\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:jtekt:pc10g-cpu:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BC86B853-5B5B-4289-9A44-5CE055B043EE\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:jtekt:2port-efr_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"1.50\",\"matchCriteriaId\":\"C664399E-1234-4B87-A95F-3D3EED021E7E\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:jtekt:2port-efr:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3A13F82D-1759-4599-A976-185A13624362\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:jtekt:plus_cpu_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.11\",\"matchCriteriaId\":\"A5D1D75E-5D41-4B0E-AF16-6A23E012185F\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:jtekt:plus_cpu:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"9D9F88F4-3DBA-4BCB-B335-792ACD46C41D\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:jtekt:plus_ex_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.11\",\"matchCriteriaId\":\"F60432C2-5D24-4A00-BF0B-1E658DD7E10C\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:jtekt:plus_ex:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"CBBBFB02-98BA-49AA-89EC-5A2A601425F8\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:jtekt:plus_ex2_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.11\",\"matchCriteriaId\":\"90926718-2F18-40AB-8DB5-8D15D66D8396\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:jtekt:plus_ex2:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"BA38A495-AF65-4819-BEBC-F23A4B8FFA0F\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:jtekt:plus_efr_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.11\",\"matchCriteriaId\":\"FD733D20-E696-4713-9509-AEED02753EF0\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:jtekt:plus_efr:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"466211B5-2205-4C37-ABBC-0C0E089D8C27\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:jtekt:plus_efr2_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.11\",\"matchCriteriaId\":\"3EC7E293-6A02-405D-8D0F-9D28220463E1\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:jtekt:plus_efr2:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7AC3C38F-361E-4FF9-B7DE-06B559501DA7\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:jtekt:plus_2p-efr_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.11\",\"matchCriteriaId\":\"E4791655-E74A-4095-8D8F-2C2B4503CC12\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\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  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.