CVE-2017-7901 (GCVE-0-2017-7901)

Vulnerability from cvelistv5 – Published: 2017-06-30 02:35 – Updated: 2024-08-05 16:19
VLAI
Summary
A Predictable Value Range from Previous Values issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. Insufficiently random TCP initial sequence numbers are generated, which may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections, resulting in a denial of service for the target device.
Severity
8.6 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CWE
Assigner
icscert CNA under the icscert root
CNA scorecard B 75/100 over 343 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
n/a Rockwell Automation Allen-Bradley MicroLogix 1100 and 1400 Affected: Rockwell Automation Allen-Bradley MicroLogix 1100 and 1400
Date Public
2017-06-29 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T16:19:29.159Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "1038546",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1038546"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Rockwell Automation Allen-Bradley MicroLogix 1100 and 1400",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Rockwell Automation Allen-Bradley MicroLogix 1100 and 1400"
            }
          ]
        }
      ],
      "datePublic": "2017-06-29T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A Predictable Value Range from Previous Values issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. Insufficiently random TCP initial sequence numbers are generated, which may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections, resulting in a denial of service for the target device."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-343",
              "description": "CWE-343",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2017-07-07T09:57:01.000Z",
        "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
        "shortName": "icscert"
      },
      "references": [
        {
          "name": "1038546",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1038546"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "ics-cert@hq.dhs.gov",
          "ID": "CVE-2017-7901",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Rockwell Automation Allen-Bradley MicroLogix 1100 and 1400",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "Rockwell Automation Allen-Bradley MicroLogix 1100 and 1400"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A Predictable Value Range from Previous Values issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. Insufficiently random TCP initial sequence numbers are generated, which may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections, resulting in a denial of service for the target device."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-343"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "1038546",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1038546"
            },
            {
              "name": "https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04",
              "refsource": "MISC",
              "url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6",
    "assignerShortName": "icscert",
    "cveId": "CVE-2017-7901",
    "datePublished": "2017-06-30T02:35:00.000Z",
    "dateReserved": "2017-04-18T00:00:00.000Z",
    "dateUpdated": "2024-08-05T16:19:29.159Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2017-7901",
      "date": "2026-11-12",
      "epss": "0.09046",
      "percentile": "0.95354"
    },
    "fkie_nvd": {
      "configurations": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1763-l16awa_series_a:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "E44D0CCE-EDA7-4DF2-B67B-C59DFAE7F888",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1763-l16awa_series_b:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "58E4AB51-E136-4AA3-AFF9-50F240489856",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1763-l16bbb_series_a:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "6006CE1E-08EC-4AFC-8F35-73B24AA7F08D",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1763-l16bbb_series_b:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "F52398D3-996E-4291-887F-6B8E0AF24AFF",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1763-l16bwa_series_a:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "61603F24-7505-4A9E-BA9E-57C7B5A60A6E",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1763-l16bwa_series_b:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "9558148B-3000-4D83-9AB0-380D7FBB0C9A",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1763-l16dwd_series_a:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "C805AFD6-481C-4A32-9CE8-281F9B793263",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1763-l16dwd_series_b:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "DC9E1F42-4F17-4EA4-8D0F-30220F560A0E",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            },
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:h:rockwellautomation:ab_micrologix_controller:1100:*:*:*:*:*:*:*",
                  "matchCriteriaId": "FA98842B-9D09-4C37-AB34-4E9FA566BAD8",
                  "vulnerable": false
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "AND"
        },
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32awa_series_a:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "8C8E3AF6-1017-4A18-99CA-854F1022ED66",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32awa_series_b:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "A093AA8B-7DB9-4373-AE8F-F8B879A4BE5E",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32awaa_series_a:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "25DA9309-964B-4C1C-8B95-9C1CD80DDC74",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32awaa_series_b:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "6D51D3F6-ABB3-4FFD-81D5-B3D3C29F0A46",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bwa_series_a:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "DC05C3A1-1042-46AD-83D8-765AF4C9BCD9",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bwa_series_b:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "6218A006-1F60-4E29-85CC-7D1BCBD7C734",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bwaa_series_a:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "6B863572-CECF-47DF-AF6F-C25F88200DBE",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bwaa_series_b:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "59BEBB0E-8C6E-4663-9E0C-E755C2EF0041",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bxb_series_a:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "1303D987-4A44-4F33-992E-0C7E683EC7A9",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bxb_series_b:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "1E7D8E09-D97D-45FF-9AD0-A9B0A846E600",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bxba_series_a:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "9D9C64FB-A613-4940-86E6-95431B907159",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bxba_series_b:*:*:*:*:*:*:*:*",
                  "matchCriteriaId": "B5C50D4A-EB32-4BE4-B9E6-D25494E2EF55",
                  "versionEndIncluding": "16.000",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            },
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:h:rockwellautomation:ab_micrologix_controller:1400:*:*:*:*:*:*:*",
                  "matchCriteriaId": "FFF2EF59-F451-490D-A7AF-E66D11493948",
                  "vulnerable": false
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "AND"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A Predictable Value Range from Previous Values issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. Insufficiently random TCP initial sequence numbers are generated, which may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections, resulting in a denial of service for the target device."
        },
        {
          "lang": "es",
          "value": "Se detect\u00f3 un problema de Rango de Valor Predecible de Valores Anteriores en los controladores l\u00f3gicos programables MicroLogix 1100 1763-L16AWA, Series A y B, versi\u00f3n 16.00 y anteriores; 1763-L16BBB, Serie A y B, versi\u00f3n 16.00 y anteriores; 1763-L16BWA, Serie A y B, versi\u00f3n 16.00 y anteriores; y 1763-L16DWD, Series A y B, versi\u00f3n 16.00 y anteriores de Allen-Bradley en Rockwell Automation y en controladores l\u00f3gicos programables MicroLogix 1400 1766-L32AWA, Series A y B, versi\u00f3n 16.00 y anteriores; 1766-L32BWA, Serie A y B, versi\u00f3n 16.00 y anteriores; 1766-L32BWAA, Serie A y B, versi\u00f3n 16.00 y anteriores; 1766-L32BXB, Serie A y B, versi\u00f3n 16.00 y anteriores; 1766-L32BXBA, Serie A y B, versi\u00f3n 16.00 y anteriores; y 1766-L32AWAA, Series A y B, versi\u00f3n 16.00 y anteriores de Allen-Bradley en Rockwell Automation. Se generan n\u00fameros de secuencia inicial TCP de aleatoriedad insuficientemente, lo que puede permitir a un atacante predecir los n\u00fameros de los valores anteriores. Esto puede permitir a un atacante suplantar o interrumpir las conexiones TCP, resultando en una denegaci\u00f3n de servicio para el dispositivo de destino."
        }
      ],
      "id": "CVE-2017-7901",
      "lastModified": "2024-11-21T03:32:55.687",
      "metrics": {
        "cvssMetricV2": [
          {
            "acInsufInfo": true,
            "baseSeverity": "HIGH",
            "cvssData": {
              "accessComplexity": "LOW",
              "accessVector": "NETWORK",
              "authentication": "NONE",
              "availabilityImpact": "COMPLETE",
              "baseScore": 9.0,
              "confidentialityImpact": "PARTIAL",
              "integrityImpact": "PARTIAL",
              "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:C",
              "version": "2.0"
            },
            "exploitabilityScore": 10.0,
            "impactScore": 8.5,
            "obtainAllPrivilege": false,
            "obtainOtherPrivilege": false,
            "obtainUserPrivilege": false,
            "source": "nvd@nist.gov",
            "type": "Primary",
            "userInteractionRequired": false
          }
        ],
        "cvssMetricV30": [
          {
            "cvssData": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.6,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
              "version": "3.0"
            },
            "exploitabilityScore": 3.9,
            "impactScore": 4.7,
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      },
      "published": "2017-06-30T03:29:00.797",
      "references": [
        {
          "source": "ics-cert@hq.dhs.gov",
          "url": "http://www.securitytracker.com/id/1038546"
        },
        {
          "source": "ics-cert@hq.dhs.gov",
          "tags": [
            "Patch",
            "Third Party Advisory",
            "US Government Resource"
          ],
          "url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "url": "http://www.securitytracker.com/id/1038546"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Third Party Advisory",
            "US Government Resource"
          ],
          "url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04"
        }
      ],
      "sourceIdentifier": "ics-cert@hq.dhs.gov",
      "vulnStatus": "Modified",
      "weaknesses": [
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-343"
            }
          ],
          "source": "ics-cert@hq.dhs.gov",
          "type": "Secondary"
        },
        {
          "description": [
            {
              "lang": "en",
              "value": "CWE-330"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1763-l16awa_series_a:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "E44D0CCE-EDA7-4DF2-B67B-C59DFAE7F888",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1763-l16awa_series_b:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "58E4AB51-E136-4AA3-AFF9-50F240489856",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1763-l16bbb_series_a:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6006CE1E-08EC-4AFC-8F35-73B24AA7F08D",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1763-l16bbb_series_b:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F52398D3-996E-4291-887F-6B8E0AF24AFF",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1763-l16bwa_series_a:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "61603F24-7505-4A9E-BA9E-57C7B5A60A6E",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1763-l16bwa_series_b:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9558148B-3000-4D83-9AB0-380D7FBB0C9A",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1763-l16dwd_series_a:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C805AFD6-481C-4A32-9CE8-281F9B793263",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1763-l16dwd_series_b:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DC9E1F42-4F17-4EA4-8D0F-30220F560A0E",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:rockwellautomation:ab_micrologix_controller:1100:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FA98842B-9D09-4C37-AB34-4E9FA566BAD8",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          },
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32awa_series_a:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "8C8E3AF6-1017-4A18-99CA-854F1022ED66",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32awa_series_b:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A093AA8B-7DB9-4373-AE8F-F8B879A4BE5E",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32awaa_series_a:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "25DA9309-964B-4C1C-8B95-9C1CD80DDC74",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32awaa_series_b:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6D51D3F6-ABB3-4FFD-81D5-B3D3C29F0A46",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bwa_series_a:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DC05C3A1-1042-46AD-83D8-765AF4C9BCD9",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bwa_series_b:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6218A006-1F60-4E29-85CC-7D1BCBD7C734",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bwaa_series_a:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6B863572-CECF-47DF-AF6F-C25F88200DBE",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bwaa_series_b:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "59BEBB0E-8C6E-4663-9E0C-E755C2EF0041",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bxb_series_a:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1303D987-4A44-4F33-992E-0C7E683EC7A9",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bxb_series_b:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1E7D8E09-D97D-45FF-9AD0-A9B0A846E600",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bxba_series_a:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9D9C64FB-A613-4940-86E6-95431B907159",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:rockwellautomation:1766-l32bxba_series_b:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "B5C50D4A-EB32-4BE4-B9E6-D25494E2EF55",
                    "versionEndIncluding": "16.000",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              },
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:h:rockwellautomation:ab_micrologix_controller:1400:*:*:*:*:*:*:*",
                    "matchCriteriaId": "FFF2EF59-F451-490D-A7AF-E66D11493948",
                    "vulnerable": false
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ],
            "operator": "AND"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A Predictable Value Range from Previous Values issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. Insufficiently random TCP initial sequence numbers are generated, which may allow an attacker to predict the numbers from previous values. This may allow an attacker to spoof or disrupt TCP connections, resulting in a denial of service for the target device."
          },
          {
            "lang": "es",
            "value": "Se detect\u00f3 un problema de Rango de Valor Predecible de Valores Anteriores en los controladores l\u00f3gicos programables MicroLogix 1100 1763-L16AWA, Series A y B, versi\u00f3n 16.00 y anteriores; 1763-L16BBB, Serie A y B, versi\u00f3n 16.00 y anteriores; 1763-L16BWA, Serie A y B, versi\u00f3n 16.00 y anteriores; y 1763-L16DWD, Series A y B, versi\u00f3n 16.00 y anteriores de Allen-Bradley en Rockwell Automation y en controladores l\u00f3gicos programables MicroLogix 1400 1766-L32AWA, Series A y B, versi\u00f3n 16.00 y anteriores; 1766-L32BWA, Serie A y B, versi\u00f3n 16.00 y anteriores; 1766-L32BWAA, Serie A y B, versi\u00f3n 16.00 y anteriores; 1766-L32BXB, Serie A y B, versi\u00f3n 16.00 y anteriores; 1766-L32BXBA, Serie A y B, versi\u00f3n 16.00 y anteriores; y 1766-L32AWAA, Series A y B, versi\u00f3n 16.00 y anteriores de Allen-Bradley en Rockwell Automation. Se generan n\u00fameros de secuencia inicial TCP de aleatoriedad insuficientemente, lo que puede permitir a un atacante predecir los n\u00fameros de los valores anteriores. Esto puede permitir a un atacante suplantar o interrumpir las conexiones TCP, resultando en una denegaci\u00f3n de servicio para el dispositivo de destino."
          }
        ],
        "id": "CVE-2017-7901",
        "lastModified": "2026-05-13T00:24:29.033",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": true,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "COMPLETE",
                "baseScore": 9.0,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:C",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 8.5,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 8.6,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 4.7,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2017-06-30T03:29:00.797",
        "references": [
          {
            "source": "ics-cert@hq.dhs.gov",
            "url": "http://www.securitytracker.com/id/1038546"
          },
          {
            "source": "ics-cert@hq.dhs.gov",
            "tags": [
              "Patch",
              "Third Party Advisory",
              "US Government Resource"
            ],
            "url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securitytracker.com/id/1038546"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory",
              "US Government Resource"
            ],
            "url": "https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04"
          }
        ],
        "sourceIdentifier": "ics-cert@hq.dhs.gov",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-343"
              }
            ],
            "source": "ics-cert@hq.dhs.gov",
            "type": "Secondary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-330"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.