GSD-2021-31894

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions < V9.1 SP2), SIMATIC PDM (All versions < V9.2 SP2), SIMATIC STEP 7 V5.X (All versions < V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 SP2 HF1). A directory containing metafiles relevant to devices' configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software.
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2021-31894",
    "description": "A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions), SIMATIC PDM (All versions), SIMATIC STEP 7 V5.X (All versions \u003c V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions \u003c V5.4 SP2 HF1). A directory containing metafiles relevant to devices\u0027 configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software.",
    "id": "GSD-2021-31894"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-31894"
      ],
      "details": "A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions \u003c V9.1 SP2), SIMATIC PDM (All versions \u003c V9.2 SP2), SIMATIC STEP 7 V5.X (All versions \u003c V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions \u003c V5.4 SP2 HF1). A directory containing metafiles relevant to devices\u0027 configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software.",
      "id": "GSD-2021-31894",
      "modified": "2023-12-13T01:23:13.537446Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "productcert@siemens.com",
        "ID": "CVE-2021-31894",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
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                  {
                    "product_name": "SIMATIC PCS 7 V8.2 and earlier",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "All versions"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "SIMATIC PCS 7 V9.X",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "All versions \u003c V9.1 SP2"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "SIMATIC PDM",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "All versions \u003c V9.2 SP2"
                        }
                      ]
                    }
                  },
                  {
                    "product_name": "SIMATIC STEP 7 V5.X",
                    "version": {
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                        }
                      ]
                    }
                  },
                  {
                    "product_name": "SINAMICS STARTER (containing STEP 7 OEM version)",
                    "version": {
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                          "version_value": "All versions \u003c  V5.4 SP2 HF1"
                        }
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                  }
                ]
              },
              "vendor_name": "Siemens"
            }
          ]
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      "data_type": "CVE",
      "data_version": "4.0",
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            "value": "A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions \u003c V9.1 SP2), SIMATIC PDM (All versions \u003c V9.2 SP2), SIMATIC STEP 7 V5.X (All versions \u003c V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions \u003c V5.4 SP2 HF1). A directory containing metafiles relevant to devices\u0027 configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-732: Incorrect Permission Assignment for Critical Resource"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf",
            "refsource": "MISC",
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [
              {
                "children": [],
                "cpe_match": [
                  {
                    "cpe23Uri": "cpe:2.3:o:siemens:simatic_pcs_7_firmware:*:*:*:*:*:*:*:*",
                    "cpe_name": [],
                    "versionEndIncluding": "8.2",
                    "vulnerable": true
                  },
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                    "cpe23Uri": "cpe:2.3:o:siemens:simatic_pcs_7_firmware:9.0:*:*:*:*:*:*:*",
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                "operator": "OR"
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          {
            "children": [
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                    "cpe_name": [],
                    "versionEndExcluding": "5.7",
                    "versionStartIncluding": "5.0",
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                "operator": "OR"
              },
              {
                "children": [],
                "cpe_match": [
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            "cpe_match": [],
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                "children": [],
                "cpe_match": [
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                    "cpe_name": [],
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                    "cpe_name": [],
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                    "cpe23Uri": "cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:sp1:*:*:*:*:*:*",
                    "cpe_name": [],
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                    "cpe_name": [],
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                  },
                  {
                    "cpe23Uri": "cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:sp2:*:*:*:*:*:*",
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              }
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      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "productcert@siemens.com",
          "ID": "CVE-2021-31894"
        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions \u003c V9.1 SP2), SIMATIC PDM (All versions \u003c V9.2 SP2), SIMATIC STEP 7 V5.X (All versions \u003c V5.7), SINAMICS STARTER (containing STEP 7 OEM version) (All versions \u003c V5.4 SP2 HF1). A directory containing metafiles relevant to devices\u0027 configurations has write permissions. An attacker could leverage this vulnerability by changing the content of certain metafiles and subsequently manipulate parameters or behavior of devices that would be later configured by the affected software."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-732"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "N/A",
              "refsource": "CONFIRM",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.2,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 10.0,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.0,
          "impactScore": 6.0
        }
      },
      "lastModifiedDate": "2022-08-10T20:15Z",
      "publishedDate": "2021-07-13T11:15Z"
    }
  }
}


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Sightings

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  • 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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  • 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.


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