Vulnerability-Lookup

CNVD-2021-71443

Vulnerability from cnvd - Published: 2021-09-16

Title

Siemens SIMATIC NET CP模块拒绝服务漏洞

Description

SIMATIC CP 343-1和CP 443-1系列的通信处理器（CP）模块设计用于支持SIMATIC S7-300/S7-400 CPU进行以太网通信。SIPLUS极限产品是为在极端条件下可靠运行而设计的，基于SIMATIC，LOGO！，SITOP、SINAMICS、SIMOTION、SCALANCE或其他设备。 Siemens SIMATIC NET CP模块存在拒绝服务漏洞，攻击者可利用漏洞向受影响设备的端口102/tcp发送构建的数据包可能导致拒绝服务情况。需要重新启动以恢复正常操作。

Severity

高

Patch Name

Siemens SIMATIC NET CP模块拒绝服务漏洞的补丁

Patch Description

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-549234.pdf

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf

Impacted products

Name
['Siemens SIMATIC CP 343-1 ERPC', 'Siemens SIMATIC CP 343-1 (incl. SIPLUS variants)', 'Siemens SIMATIC CP 343-1 Advanced (incl. SIPLUS vari- ants)', 'Siemens SIMATIC CP 343-1 Lean (incl. SIPLUS variants)', 'Siemens SIMATIC CP 443-1 (incl. SIPLUS variants)', 'Siemens SIMATIC CP 443-1 Advanced (incl. SIPLUS vari- ants)']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-33737"
    }
  },
  "description": "SIMATIC CP 343-1\u548cCP 443-1\u7cfb\u5217\u7684\u901a\u4fe1\u5904\u7406\u5668\uff08CP\uff09\u6a21\u5757\u8bbe\u8ba1\u7528\u4e8e\u652f\u6301SIMATIC S7-300/S7-400 CPU\u8fdb\u884c\u4ee5\u592a\u7f51\u901a\u4fe1\u3002SIPLUS\u6781\u9650\u4ea7\u54c1\u662f\u4e3a\u5728\u6781\u7aef\u6761\u4ef6\u4e0b\u53ef\u9760\u8fd0\u884c\u800c\u8bbe\u8ba1\u7684\uff0c\u57fa\u4e8eSIMATIC\uff0cLOGO\uff01\uff0cSITOP\u3001SINAMICS\u3001SIMOTION\u3001SCALANCE\u6216\u5176\u4ed6\u8bbe\u5907\u3002\n\nSiemens SIMATIC NET CP\u6a21\u5757\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5411\u53d7\u5f71\u54cd\u8bbe\u5907\u7684\u7aef\u53e3102/tcp\u53d1\u9001\u6784\u5efa\u7684\u6570\u636e\u5305\u53ef\u80fd\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u60c5\u51b5\u3002\u9700\u8981\u91cd\u65b0\u542f\u52a8\u4ee5\u6062\u590d\u6b63\u5e38\u64cd\u4f5c\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-549234.pdf",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-71443",
  "openTime": "2021-09-16",
  "patchDescription": "SIMATIC CP 343-1\u548cCP 443-1\u7cfb\u5217\u7684\u901a\u4fe1\u5904\u7406\u5668\uff08CP\uff09\u6a21\u5757\u8bbe\u8ba1\u7528\u4e8e\u652f\u6301SIMATIC S7-300/S7-400 CPU\u8fdb\u884c\u4ee5\u592a\u7f51\u901a\u4fe1\u3002SIPLUS\u6781\u9650\u4ea7\u54c1\u662f\u4e3a\u5728\u6781\u7aef\u6761\u4ef6\u4e0b\u53ef\u9760\u8fd0\u884c\u800c\u8bbe\u8ba1\u7684\uff0c\u57fa\u4e8eSIMATIC\uff0cLOGO\uff01\uff0cSITOP\u3001SINAMICS\u3001SIMOTION\u3001SCALANCE\u6216\u5176\u4ed6\u8bbe\u5907\u3002\r\n\r\nSiemens SIMATIC NET CP\u6a21\u5757\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5411\u53d7\u5f71\u54cd\u8bbe\u5907\u7684\u7aef\u53e3102/tcp\u53d1\u9001\u6784\u5efa\u7684\u6570\u636e\u5305\u53ef\u80fd\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u60c5\u51b5\u3002\u9700\u8981\u91cd\u65b0\u542f\u52a8\u4ee5\u6062\u590d\u6b63\u5e38\u64cd\u4f5c\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": "Siemens SIMATIC NET CP\u6a21\u5757\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Siemens SIMATIC CP 343-1 ERPC",
      "Siemens SIMATIC CP 343-1 (incl. SIPLUS variants)",
      "Siemens SIMATIC CP 343-1 Advanced (incl. SIPLUS vari- ants)",
      "Siemens SIMATIC CP 343-1 Lean (incl. SIPLUS variants)",
      "Siemens SIMATIC CP 443-1 (incl. SIPLUS variants)",
      "Siemens SIMATIC CP 443-1 Advanced (incl. SIPLUS vari- ants)"
    ]
  },
  "referenceLink": "https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf",
  "serverity": "\u9ad8",
  "submitTime": "2021-09-15",
  "title": "Siemens SIMATIC NET CP\u6a21\u5757\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2021-33737 (GCVE-0-2021-33737)

Vulnerability from cvelistv5 – Published: 2021-09-14 10:47 – Updated: 2024-08-03 23:58

Summary

A vulnerability has been identified in SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 ERPC (All versions), SIMATIC CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 (All versions < V3.3), SIMATIC CP 443-1 Advanced (All versions < V3.3), SIPLUS NET CP 443-1 (All versions < V3.3), SIPLUS NET CP 443-1 Advanced (All versions < V3.3). Sending a specially crafted packet to port 102/tcp of an affected device could cause a denial of service condition. A restart is needed to restore normal operations.

Severity

7.5 (High)


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

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

siemens icscert root

References

1 reference

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

Impacted products

8 products

Vendor	Product	Version
Siemens	SIMATIC CP 343-1 (incl. SIPLUS variants)	Affected: All versions
Siemens	SIMATIC CP 343-1 Advanced (incl. SIPLUS variants)	Affected: All versions
Siemens	SIMATIC CP 343-1 ERPC	Affected: All versions
Siemens	SIMATIC CP 343-1 Lean (incl. SIPLUS variants)	Affected: All versions
Siemens	SIMATIC CP 443-1	Affected: All versions < V3.3
Siemens	SIMATIC CP 443-1 Advanced	Affected: All versions < V3.3
Siemens	SIPLUS NET CP 443-1	Affected: All versions < V3.3
Siemens	SIPLUS NET CP 443-1 Advanced	Affected: All versions < V3.3

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:58:22.953Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC CP 343-1 (incl. SIPLUS variants)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC CP 343-1 Advanced (incl. SIPLUS variants)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC CP 343-1 ERPC",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC CP 343-1 Lean (incl. SIPLUS variants)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC CP 443-1",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.3"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC CP 443-1",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.3"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC CP 443-1 Advanced",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.3"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIPLUS NET CP 443-1",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.3"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIPLUS NET CP 443-1 Advanced",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been identified in SIMATIC CP 343-1 (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 Advanced (incl. SIPLUS variants) (All versions), SIMATIC CP 343-1 ERPC (All versions), SIMATIC CP 343-1 Lean (incl. SIPLUS variants) (All versions), SIMATIC CP 443-1 (All versions \u003c V3.3), SIMATIC CP 443-1 (All versions \u003c V3.3), SIMATIC CP 443-1 Advanced (All versions \u003c V3.3), SIPLUS NET CP 443-1 (All versions \u003c V3.3), SIPLUS NET CP 443-1 Advanced (All versions \u003c V3.3). Sending a specially crafted packet to port 102/tcp of an affected device could cause a denial of service condition. A restart is needed to restore normal operations."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:C",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-04-11T09:01:52.372Z",
        "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "shortName": "siemens"
      },
      "references": [
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-549234.pdf"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
    "assignerShortName": "siemens",
    "cveId": "CVE-2021-33737",
    "datePublished": "2021-09-14T10:47:38.000Z",
    "dateReserved": "2021-05-28T00:00:00.000Z",
    "dateUpdated": "2024-08-03T23:58:22.953Z",
    "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.

Action not permitted

CNVD-2021-71443

CVE-2021-33737 (GCVE-0-2021-33737)

Tags

Sightings

Nomenclature

Related by attack behaviour