FKIE_CVE-2023-51773

Vulnerability from fkie_nvd - Published: 2024-02-29 01:42 - Updated: 2026-06-17 06:41
Severity
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c.
References
cve@mitre.orghttps://github.com/bacnet-stack/bacnet-stack/blob/master/CHANGELOG.mdRelease Notes
cve@mitre.orghttps://github.com/bacnet-stack/bacnet-stack/compare/bacnet-stack-1.3.1...bacnet-stack-1.3.2Patch
cve@mitre.orghttps://github.com/bacnet-stack/bacnet-stack/pull/546Patch
cve@mitre.orghttps://github.com/bacnet-stack/bacnet-stack/pull/546/commits/c465412a076ca6c9ddf649612f2b4e1874d8dcb8Patch
cve@mitre.orghttps://sourceforge.net/p/bacnet/bugs/85/Permissions Required
af854a3a-2127-422b-91ae-364da2661108https://github.com/bacnet-stack/bacnet-stack/blob/master/CHANGELOG.mdRelease Notes
af854a3a-2127-422b-91ae-364da2661108https://github.com/bacnet-stack/bacnet-stack/compare/bacnet-stack-1.3.1...bacnet-stack-1.3.2Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/bacnet-stack/bacnet-stack/pull/546Patch
af854a3a-2127-422b-91ae-364da2661108https://github.com/bacnet-stack/bacnet-stack/pull/546/commits/c465412a076ca6c9ddf649612f2b4e1874d8dcb8Patch
af854a3a-2127-422b-91ae-364da2661108https://sourceforge.net/p/bacnet/bugs/85/Permissions Required
Impacted products
Vendor Product Version
bacnetstack bacnet_stack *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:bacnet_protocol_stack_project:bacnet_protocol_stack:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "bacnet_protocol_stack",
          "vendor": "bacnet_protocol_stack_project",
          "versions": [
            {
              "lessThan": "1.3.2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:bacnetstack:bacnet_stack:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "4D6408AF-EAB6-4695-B992-6409C3FCE97D",
              "versionEndExcluding": "1.3.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "BACnet Stack before 1.3.2 has a decode function APDU buffer over-read in bacapp_decode_application_data in bacapp.c."
    },
    {
      "lang": "es",
      "value": "BACnet Stack anterior a 1.3.2 tiene una funci\u00f3n de decodificaci\u00f3n sobrelectura del b\u00fafer APDU en bacapp_decode_application_data en bacapp.c."
    }
  ],
  "id": "CVE-2023-51773",
  "lastModified": "2026-06-17T06:41:38.010",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-51773",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-07-26T19:17:47.911804Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-02-29T01:42:05.557",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/bacnet-stack/bacnet-stack/blob/master/CHANGELOG.md"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/bacnet-stack/bacnet-stack/compare/bacnet-stack-1.3.1...bacnet-stack-1.3.2"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/bacnet-stack/bacnet-stack/pull/546"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/bacnet-stack/bacnet-stack/pull/546/commits/c465412a076ca6c9ddf649612f2b4e1874d8dcb8"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://sourceforge.net/p/bacnet/bugs/85/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/bacnet-stack/bacnet-stack/blob/master/CHANGELOG.md"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/bacnet-stack/bacnet-stack/compare/bacnet-stack-1.3.1...bacnet-stack-1.3.2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/bacnet-stack/bacnet-stack/pull/546"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/bacnet-stack/bacnet-stack/pull/546/commits/c465412a076ca6c9ddf649612f2b4e1874d8dcb8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Permissions Required"
      ],
      "url": "https://sourceforge.net/p/bacnet/bugs/85/"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-126"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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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

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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.
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  • 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.