Vulnerability-Lookup

CNVD-2021-71447

Vulnerability from cnvd - Published: 2021-09-16

Title

多款Siemens APOGEE MBC产品缓冲区溢出漏洞

Description

Siemens APOGEE MBC是德国西门子（Siemens）公司的一个模块化楼宇控制器。多款Siemens APOGEE MBC产品存在缓冲区溢出漏洞，未经身份验证的远程攻击者可利用此漏洞以root权限在设备上执行任意代码。

Severity

高

Patch Name

多款Siemens APOGEE MBC产品缓冲区溢出漏洞的补丁

Patch Description

Siemens APOGEE MBC是德国西门子（Siemens）公司的一个模块化楼宇控制器。多款Siemens APOGEE MBC产品存在缓冲区溢出漏洞，未经身份验证的远程攻击者可利用此漏洞以root权限在设备上执行任意代码。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

用户可参考如下供应商提供的安全公告获得补丁信息： https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf

Impacted products

Name
['Siemens APOGEE MBC (PPC) (P2 Ethernet) >= V2.6.3', 'Siemens APOGEE MEC (PPC) (P2 Ethernet) >= V2.6.3', 'Siemens APOGEE PXC Compact (BACnet) < V3.5.3', 'Siemens APOGEE PXC Compact (P2 Ethernet) >= V2.8', 'Siemens APOGEE PXC Modular (BACnet) < V3.5.3', 'Siemens APOGEE PXC Modular (P2 Ethernet) >= V2.8', 'Siemens TALON TC Compact (BACnet) < V3.5.3', 'Siemens TALON TC Modular (BACnet) < V3.5.3']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-27391"
    }
  },
  "description": "Siemens APOGEE MBC\u662f\u5fb7\u56fd\u897f\u95e8\u5b50\uff08Siemens\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u6a21\u5757\u5316\u697c\u5b87\u63a7\u5236\u5668\u3002\n\n\u591a\u6b3eSiemens APOGEE MBC\u4ea7\u54c1\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u672a\u7ecf\u8eab\u4efd\u9a8c\u8bc1\u7684\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u6b64\u6f0f\u6d1e\u4ee5root\u6743\u9650\u5728\u8bbe\u5907\u4e0a\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u4f9b\u5e94\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u516c\u544a\u83b7\u5f97\u8865\u4e01\u4fe1\u606f\uff1a\r\nhttps://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-71447",
  "openTime": "2021-09-16",
  "patchDescription": "Siemens APOGEE MBC\u662f\u5fb7\u56fd\u897f\u95e8\u5b50\uff08Siemens\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u6a21\u5757\u5316\u697c\u5b87\u63a7\u5236\u5668\u3002\r\n\r\n\u591a\u6b3eSiemens APOGEE MBC\u4ea7\u54c1\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u672a\u7ecf\u8eab\u4efd\u9a8c\u8bc1\u7684\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u5229\u7528\u6b64\u6f0f\u6d1e\u4ee5root\u6743\u9650\u5728\u8bbe\u5907\u4e0a\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "\u591a\u6b3eSiemens APOGEE MBC\u4ea7\u54c1\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Siemens APOGEE MBC (PPC) (P2 Ethernet) \u003e= V2.6.3",
      "Siemens APOGEE MEC (PPC) (P2 Ethernet) \u003e= V2.6.3",
      "Siemens APOGEE PXC Compact (BACnet) \u003c V3.5.3",
      "Siemens APOGEE PXC Compact (P2 Ethernet) \u003e= V2.8",
      "Siemens APOGEE PXC Modular (BACnet) \u003c V3.5.3",
      "Siemens APOGEE PXC Modular (P2 Ethernet) \u003e= V2.8",
      "Siemens TALON TC Compact (BACnet) \u003c V3.5.3",
      "Siemens TALON TC Modular (BACnet) \u003c V3.5.3"
    ]
  },
  "referenceLink": "https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf",
  "serverity": "\u9ad8",
  "submitTime": "2021-09-15",
  "title": "\u591a\u6b3eSiemens APOGEE MBC\u4ea7\u54c1\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-27391 (GCVE-0-2021-27391)

Vulnerability from cvelistv5 – Published: 2021-09-14 10:47 – Updated: 2025-04-23 19:28

Summary

A vulnerability has been identified in APOGEE MBC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE MEC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE PXC Compact (BACnet) (All versions < V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions >= V2.8), APOGEE PXC Modular (BACnet) (All versions < V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions >= V2.8), TALON TC Compact (BACnet) (All versions < V3.5.3), TALON TC Modular (BACnet) (All versions < V3.5.3). The web server of affected devices lacks proper bounds checking when parsing the Host parameter in HTTP requests, which could lead to a buffer overflow. An unauthenticated remote attacker could exploit this vulnerability to execute arbitrary code on the device with root privileges.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-23 13:27 UTC

CWE

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Assigner

siemens icscert root

References

1 reference

URL	Tags
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_MISC

Impacted products

8 products

Vendor	Product	Version
Siemens	APOGEE MBC (PPC) (P2 Ethernet)	Affected: All versions >= V2.6.3
Siemens	APOGEE MEC (PPC) (P2 Ethernet)	Affected: All versions >= V2.6.3
Siemens	APOGEE PXC Compact (BACnet)	Affected: All versions < V3.5.3
Siemens	APOGEE PXC Compact (P2 Ethernet)	Affected: All versions >= V2.8
Siemens	APOGEE PXC Modular (BACnet)	Affected: All versions < V3.5.3
Siemens	APOGEE PXC Modular (P2 Ethernet)	Affected: All versions >= V2.8
Siemens	TALON TC Compact (BACnet)	Affected: All versions < V3.5.3
Siemens	TALON TC Modular (BACnet)	Affected: All versions < V3.5.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:48:16.974Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-27391",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T13:27:50.374532Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T19:28:38.162Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "APOGEE MBC (PPC) (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.6.3"
            }
          ]
        },
        {
          "product": "APOGEE MEC (PPC) (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.6.3"
            }
          ]
        },
        {
          "product": "APOGEE PXC Compact (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.3"
            }
          ]
        },
        {
          "product": "APOGEE PXC Compact (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.8"
            }
          ]
        },
        {
          "product": "APOGEE PXC Modular (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.3"
            }
          ]
        },
        {
          "product": "APOGEE PXC Modular (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.8"
            }
          ]
        },
        {
          "product": "TALON TC Compact (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.3"
            }
          ]
        },
        {
          "product": "TALON TC Modular (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been identified in APOGEE MBC (PPC) (P2 Ethernet) (All versions \u003e= V2.6.3), APOGEE MEC (PPC) (P2 Ethernet) (All versions \u003e= V2.6.3), APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions \u003e= V2.8), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions \u003e= V2.8), TALON TC Compact (BACnet) (All versions \u003c V3.5.3), TALON TC Modular (BACnet) (All versions \u003c V3.5.3). The web server of affected devices lacks proper bounds checking when parsing the Host parameter in HTTP requests, which could lead to a buffer overflow. An unauthenticated remote attacker could exploit this vulnerability to execute arbitrary code on the device with root privileges."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-09-14T10:47:31.000Z",
        "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "shortName": "siemens"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "productcert@siemens.com",
          "ID": "CVE-2021-27391",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "APOGEE MBC (PPC) (P2 Ethernet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.6.3"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE MEC (PPC) (P2 Ethernet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.6.3"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE PXC Compact (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V3.5.3"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE PXC Compact (P2 Ethernet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.8"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE PXC Modular (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V3.5.3"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE PXC Modular (P2 Ethernet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.8"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "TALON TC Compact (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V3.5.3"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "TALON TC Modular (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V3.5.3"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Siemens"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A vulnerability has been identified in APOGEE MBC (PPC) (P2 Ethernet) (All versions \u003e= V2.6.3), APOGEE MEC (PPC) (P2 Ethernet) (All versions \u003e= V2.6.3), APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions \u003e= V2.8), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions \u003e= V2.8), TALON TC Compact (BACnet) (All versions \u003c V3.5.3), TALON TC Modular (BACnet) (All versions \u003c V3.5.3). The web server of affected devices lacks proper bounds checking when parsing the Host parameter in HTTP requests, which could lead to a buffer overflow. An unauthenticated remote attacker could exploit this vulnerability to execute arbitrary code on the device with root privileges."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf",
              "refsource": "MISC",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-944498.pdf"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
    "assignerShortName": "siemens",
    "cveId": "CVE-2021-27391",
    "datePublished": "2021-09-14T10:47:31.000Z",
    "dateReserved": "2021-02-18T00:00:00.000Z",
    "dateUpdated": "2025-04-23T19:28:38.162Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.