CVE-2023-30756 (GCVE-0-2023-30756)

Vulnerability from cvelistv5 – Published: 2024-09-10 09:33 – Updated: 2024-09-10 15:10
VLAI
Summary
A vulnerability has been identified in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC CP 1243-1 (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC CP 1243-7 LTE (All versions < V3.5.20), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0) (All versions < V3.5.20), SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions), SIMATIC IPC DiagBase (All versions), SIMATIC IPC DiagMonitor (All versions), SIMATIC WinCC Runtime Advanced (All versions), SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) (All versions < V2.4.8), TIM 1531 IRC (6GK7543-1MX00-0XE0) (All versions < V2.4.8). The web server of the affected devices do not properly handle certain errors when using the Expect HTTP request header, resulting in NULL dereference. This could allow a remote attacker with no privileges to cause a denial of service condition in the system.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
8.2 (High)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:09 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
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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            "value": "A vulnerability has been identified in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants) (All versions \u003c V3.5.20), SIMATIC CP 1243-1 (incl. SIPLUS variants) (All versions \u003c V3.5.20), SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) (All versions \u003c V3.5.20), SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) (All versions \u003c V3.5.20), SIMATIC CP 1243-7 LTE (All versions \u003c V3.5.20), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0) (All versions \u003c V3.5.20), SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions), SIMATIC IPC DiagBase (All versions), SIMATIC IPC DiagMonitor (All versions), SIMATIC WinCC Runtime Advanced (All versions), SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) (All versions \u003c V2.4.8), TIM 1531 IRC (6GK7543-1MX00-0XE0) (All versions \u003c V2.4.8). The web server of the affected devices do not properly handle certain errors when using the Expect HTTP request header, resulting in NULL dereference.\r\n\r\nThis could allow a remote attacker with no privileges to cause a denial of service condition in the system."
          },
          {
            "lang": "es",
            "value": "Se ha identificado una vulnerabilidad en SIMATIC CP 1242-7 V2 (incl. variantes SIPLUS) (Todas las versiones \u0026lt; V3.5.20), SIMATIC CP 1243-1 (incl. variantes SIPLUS) (Todas las versiones \u0026lt; V3.5.20), SIMATIC CP 1243-1 DNP3 (incl. variantes SIPLUS) (Todas las versiones \u0026lt; V3.5.20), SIMATIC CP 1243-1 IEC (incl. variantes SIPLUS) (Todas las versiones \u0026lt; V3.5.20), SIMATIC CP 1243-7 LTE (Todas las versiones \u0026lt; V3.5.20), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0) (Todas las versiones \u0026lt; V3.5.20), SIMATIC HMI Comfort Panels (incl. variantes SIPLUS) (Todas las versiones), SIMATIC IPC DiagBase (Todas las versiones), SIMATIC IPC DiagMonitor (todas las versiones), SIMATIC WinCC Runtime Advanced (todas las versiones), SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) (todas las versiones \u0026lt; V2.4.8), TIM 1531 IRC (6GK7543-1MX00-0XE0) (todas las versiones \u0026lt; V2.4.8). El servidor web de los dispositivos afectados no gestiona correctamente determinados errores al utilizar el encabezado de solicitud HTTP Expect, lo que da lugar a una desreferencia NULL. Esto podr\u00eda permitir que un atacante remoto sin privilegios provoque una condici\u00f3n de denegaci\u00f3n de servicio en el sistema."
          }
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        "id": "CVE-2023-30756",
        "lastModified": "2026-06-17T05:55:36.070",
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                "modifiedPrivilegesRequired": "NOT_DEFINED",
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      "title": "CVE-2023-30756",
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              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIMATIC CP 1243-7 LTE",
              "vendor": "Siemens",
              "versions": [
                {
                  "lessThan": "V3.5.20",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIMATIC CP 1243-8 IRC",
              "vendor": "Siemens",
              "versions": [
                {
                  "lessThan": "V3.5.20",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIMATIC HMI Comfort Panels (incl. SIPLUS variants)",
              "vendor": "Siemens",
              "versions": [
                {
                  "status": "affected",
                  "version": "All versions"
                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIMATIC IPC DiagBase",
              "vendor": "Siemens",
              "versions": [
                {
                  "lessThan": "*",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIMATIC IPC DiagMonitor",
              "vendor": "Siemens",
              "versions": [
                {
                  "status": "affected",
                  "version": "All versions"
                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIMATIC WinCC Runtime Advanced",
              "vendor": "Siemens",
              "versions": [
                {
                  "status": "affected",
                  "version": "All versions"
                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "SIPLUS TIM 1531 IRC",
              "vendor": "Siemens",
              "versions": [
                {
                  "lessThan": "V2.4.8",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unknown",
              "product": "TIM 1531 IRC",
              "vendor": "Siemens",
              "versions": [
                {
                  "lessThan": "V2.4.8",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "A vulnerability has been identified in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants) (All versions \u003c V3.5.20), SIMATIC CP 1243-1 (incl. SIPLUS variants) (All versions \u003c V3.5.20), SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) (All versions \u003c V3.5.20), SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) (All versions \u003c V3.5.20), SIMATIC CP 1243-7 LTE (All versions \u003c V3.5.20), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0) (All versions \u003c V3.5.20), SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions), SIMATIC IPC DiagBase (All versions), SIMATIC IPC DiagMonitor (All versions), SIMATIC WinCC Runtime Advanced (All versions), SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) (All versions \u003c V2.4.8), TIM 1531 IRC (6GK7543-1MX00-0XE0) (All versions \u003c V2.4.8). The web server of the affected devices do not properly handle certain errors when using the Expect HTTP request header, resulting in NULL dereference.\r\n\r\nThis could allow a remote attacker with no privileges to cause a denial of service condition in the system."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C",
                "version": "3.1"
              }
            },
            {
              "cvssV4_0": {
                "baseScore": 8.2,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
                "version": "4.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-476",
                  "description": "CWE-476: NULL Pointer Dereference",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-09-10T09:33:40.640Z",
            "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
            "shortName": "siemens"
          },
          "references": [
            {
              "url": "https://cert-portal.siemens.com/productcert/html/ssa-423808.html"
            }
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "assignerShortName": "siemens",
        "cveId": "CVE-2023-30756",
        "datePublished": "2024-09-10T09:33:40.640Z",
        "dateReserved": "2023-04-14T11:16:56.497Z",
        "dateUpdated": "2024-09-10T15:10:00.273Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.

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    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.