CVE-2021-31345 (GCVE-0-2021-31345)

Vulnerability from cvelistv5 – Published: 2021-11-09 11:31 – Updated: 2025-03-11 09:47
VLAI
Summary
A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions). The total length of an UDP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on a user-defined applications that runs on top of the UDP protocol. (FSMD-2021-0006)
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
siemens CNA under the icscert root
CNA scorecard C 65/100 over 100 records in the last 180 days details
References
Impacted products
Show details on NVD website
To clipboard 

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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions \u003c V2303), PLUSCONTROL 1st Gen (All versions). The total length of an UDP payload (set in the IP header) is unchecked. This may lead to various side effects, including Information Leak and Denial-of-Service conditions, depending on a user-defined applications that runs on top of the UDP protocol. (FSMD-2021-0006)"
          },
          {
            "lang": "es",
            "value": "Se ha identificado una vulnerabilidad en APOGEE MBC (PPC) (BACnet) (Todas las versiones), APOGEE MBC (PPC) (P2 Ethernet) (Todas las versiones), APOGEE MEC (PPC) (BACnet) (Todas las versiones), APOGEE MEC (PPC) (P2 Ethernet) (Todas las versiones), APOGEE PXC Compact (BACnet) (Todas las versiones anteriores a V3. 5.4), APOGEE PXC Compact (P2 Ethernet) (Todas las versiones anteriores a V2.8.19), APOGEE PXC Modular (BACnet) (Todas las versiones anteriores a V3. 5.4), APOGEE PXC Modular (P2 Ethernet) (Todas las versiones anteriores a V2.8.19), Capital VSTAR (Todas las versiones con opciones de Ethernet habilitadas), Desigo PXC00-E.D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30. 016), Desigo PXC00-U (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC001-E.D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC100-E.D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC12-E. D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC128-U (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC200-E.D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC22-E.D (Todas las versiones posteriores o iguales V2. 3 y anteriores a V6.30.016), Desigo PXC22.1-E.D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC36.1-E.D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC50-E.D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6. 30.016), Desigo PXC64-U (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXM20-E (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Nucleus NET (Todas las versiones), Nucleus ReadyStart V3 (Todas las versiones anteriores a V2017. 02.4), Nucleus Source Code (Todas las versiones), PLUSCONTROL 1st Gen (Todas las versiones), TALON TC Compact (BACnet) (Todas las versiones anteriores a V3.5.4), TALON TC Modular (BACnet) (Todas las versiones anteriores a V3.5.4). La longitud total de una carga \u00fatil UDP (establecida en la cabecera IP) no est\u00e1 comprobada. Esto puede conducir a varios efectos secundarios, incluyendo la fuga de informaci\u00f3n y las condiciones de denegaci\u00f3n de servicio, dependiendo de las aplicaciones definidas por el usuario que se ejecutan en la parte superior del protocolo UDP. (FSMD-2021-0006)"
          }
        ],
        "id": "CVE-2021-31345",
        "lastModified": "2024-11-21T06:05:27.797",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 6.4,
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                "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
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              "exploitabilityScore": 10.0,
              "impactScore": 4.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
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          "cvssMetricV31": [
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                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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              "source": "productcert@siemens.com",
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        "published": "2021-11-09T12:15:09.143",
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            "source": "productcert@siemens.com",
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-044112.html"
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                "value": "CWE-1284"
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            "source": "productcert@siemens.com",
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    "redhat_vex": {
      "current_release_date": "2026-03-27T14:08:42+00:00",
      "cve": "CVE-2021-31345",
      "id": "CVE-2021-31345",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-31345",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-31345.json",
      "version": "3"
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  }
}



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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.
  • 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.

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