CVE-2021-34573 (GCVE-0-2021-34573)

Vulnerability from cvelistv5 – Published: 2021-09-16 12:20 – Updated: 2024-09-17 02:21
VLAI
Title
Incorrect calculation in Enbra EWM does not report backflows or no flow events
Summary
In Enbra EWM in Version 1.7.29 together with several tested wireless M-Bus Sensors the events backflow and "no flow" are not reconized or misinterpreted. This may lead to wrong values and missing events.
CWE
Assigner
CERTVDE CNA under the icscert root
CNA scorecard B 76/100 over 145 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Enbra AT-WMBUS-16-2 Affected: all
guessed Create a notification for this product.
Enbra ER-AM DN 15 Affected: ER-AM DN 15/SV all
Affected: ER-AM DN 15/TV all
guessed Create a notification for this product.
Enbra EWM 1.7.29 Affected: 03.11.2019
guessed Create a notification for this product.
Date Public
2021-08-31 00:00
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:19:46.616Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://www.fit.vutbr.cz/~polcak/CVE-2021-34573.en"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "AT-WMBUS-16-2",
          "vendor": "Enbra",
          "versions": [
            {
              "status": "affected",
              "version": "all"
            }
          ]
        },
        {
          "product": "ER-AM DN 15",
          "vendor": "Enbra",
          "versions": [
            {
              "status": "affected",
              "version": "ER-AM DN 15/SV all"
            },
            {
              "status": "affected",
              "version": "ER-AM DN 15/TV all"
            }
          ]
        },
        {
          "product": "EWM 1.7.29",
          "vendor": "Enbra",
          "versions": [
            {
              "status": "affected",
              "version": "03.11.2019"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Libor POL\u010c\u00c1K reported to CERT@VDE"
        }
      ],
      "datePublic": "2021-08-31T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "In Enbra EWM in Version 1.7.29 together with several tested wireless M-Bus Sensors the events backflow and \"no flow\" are not reconized or misinterpreted. This may lead to wrong values and missing events."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-682",
              "description": "CWE-682 Incorrect Calculation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-09-16T12:20:18.000Z",
        "orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
        "shortName": "CERTVDE"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://www.fit.vutbr.cz/~polcak/CVE-2021-34573.en"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Incorrect calculation in Enbra EWM does not report backflows or no flow events",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "info@cert.vde.com",
          "DATE_PUBLIC": "2021-08-31T22:00:00.000Z",
          "ID": "CVE-2021-34573",
          "STATE": "PUBLIC",
          "TITLE": "Incorrect calculation in Enbra EWM does not report backflows or no flow events"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "AT-WMBUS-16-2",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "all"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "ER-AM DN 15",
                      "version": {
                        "version_data": [
                          {
                            "version_name": "ER-AM DN 15/SV",
                            "version_value": "all"
                          },
                          {
                            "version_name": "ER-AM DN 15/TV",
                            "version_value": "all"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "EWM 1.7.29",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "=",
                            "version_value": "03.11.2019"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Enbra"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Libor POL\u010c\u00c1K reported to CERT@VDE"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "In Enbra EWM in Version 1.7.29 together with several tested wireless M-Bus Sensors the events backflow and \"no flow\" are not reconized or misinterpreted. This may lead to wrong values and missing events."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-682 Incorrect Calculation"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.fit.vutbr.cz/~polcak/CVE-2021-34573.en",
              "refsource": "CONFIRM",
              "url": "https://www.fit.vutbr.cz/~polcak/CVE-2021-34573.en"
            }
          ]
        },
        "source": {
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
    "assignerShortName": "CERTVDE",
    "cveId": "CVE-2021-34573",
    "datePublished": "2021-09-16T12:20:18.226Z",
    "dateReserved": "2021-06-10T00:00:00.000Z",
    "dateUpdated": "2024-09-17T02:21:48.549Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-34573",
      "date": "2026-10-16",
      "epss": "0.00226",
      "percentile": "0.12439"
    },
    "nvd": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:enbra:ewm:1.7.29:*:*:*:*:*:*:*",
                    "matchCriteriaId": "C983990C-D1DE-42C2-B6A2-8D9BD0B5A4FF",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In Enbra EWM in Version 1.7.29 together with several tested wireless M-Bus Sensors the events backflow and \"no flow\" are not reconized or misinterpreted. This may lead to wrong values and missing events."
          },
          {
            "lang": "es",
            "value": "En Enbra EWM versi\u00f3n 1.7.29, junto con varios sensores inal\u00e1mbricos M-Bus probados, los eventos backflow  y \"no flow\" no son reconocidos o son interpretados err\u00f3neamente. Esto puede conllevar a valores err\u00f3neos y eventos perdidos"
          }
        ],
        "id": "CVE-2021-34573",
        "lastModified": "2024-11-21T06:10:43.763",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "LOW",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 2.1,
                "confidentialityImpact": "NONE",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 6.2,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.5,
              "impactScore": 3.6,
              "source": "info@cert.vde.com",
              "type": "Secondary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-09-16T13:15:14.557",
        "references": [
          {
            "source": "info@cert.vde.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.fit.vutbr.cz/~polcak/CVE-2021-34573.en"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.fit.vutbr.cz/~polcak/CVE-2021-34573.en"
          }
        ],
        "sourceIdentifier": "info@cert.vde.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-682"
              }
            ],
            "source": "info@cert.vde.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T13:55:32+00:00",
      "cve": "CVE-2021-34573",
      "id": "CVE-2021-34573",
      "initial_release_date": "2021-08-31T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Incorrect calculation in Enbra EWM does not report backflows or no flow events",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-34573.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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
Events included in the timeline

Loading timeline…


    Loading…

    Loading…

    Loading…

    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.