Vulnerability-Lookup

CNVD-2021-28702

Vulnerability from cnvd - Published: 2021-04-15

Title

Siemens Nucleus产品越界写入漏洞

Description

Nucleus NET模块包含了一系列符合标准的网络和通信协议、驱动程序和实用程序，以在任何嵌入式设备中提供全功能的网络支持。 Siemens Nucleus产品越存在界写入漏洞。该漏洞是由于DNS域名标签解析功能未能正确验证DNS响应中的名称。解析格式错误的响应可能导致写入超过allocatedstructure的结尾。攻击者可利用漏洞在当前进程的上下文中执行代码或造成拒绝服务情况。

Severity

高

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-185699.pdf

Reference

https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf

Impacted products

Name
['Siemens VSTAR', 'Siemens Nucleus Source Code', 'Siemens Nucleus RTOS', 'Siemens Nucleus NET < V5.2']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-15795"
    }
  },
  "description": "Nucleus NET\u6a21\u5757\u5305\u542b\u4e86\u4e00\u7cfb\u5217\u7b26\u5408\u6807\u51c6\u7684\u7f51\u7edc\u548c\u901a\u4fe1\u534f\u8bae\u3001\u9a71\u52a8\u7a0b\u5e8f\u548c\u5b9e\u7528\u7a0b\u5e8f\uff0c\u4ee5\u5728\u4efb\u4f55\u5d4c\u5165\u5f0f\u8bbe\u5907\u4e2d\u63d0\u4f9b\u5168\u529f\u80fd\u7684\u7f51\u7edc\u652f\u6301\u3002\n\nSiemens Nucleus\u4ea7\u54c1\u8d8a\u5b58\u5728\u754c\u5199\u5165\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u662f\u7531\u4e8eDNS\u57df\u540d\u6807\u7b7e\u89e3\u6790\u529f\u80fd\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1DNS\u54cd\u5e94\u4e2d\u7684\u540d\u79f0\u3002\u89e3\u6790\u683c\u5f0f\u9519\u8bef\u7684\u54cd\u5e94\u53ef\u80fd\u5bfc\u81f4\u5199\u5165\u8d85\u8fc7allocatedstructure\u7684\u7ed3\u5c3e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u6f0f\u6d1e\u5728\u5f53\u524d\u8fdb\u7a0b\u7684\u4e0a\u4e0b\u6587\u4e2d\u6267\u884c\u4ee3\u7801\u6216\u9020\u6210\u62d2\u7edd\u670d\u52a1\u60c5\u51b5\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-185699.pdf",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-28702",
  "openTime": "2021-04-15",
  "products": {
    "product": [
      "Siemens VSTAR",
      "Siemens Nucleus Source Code",
      "Siemens Nucleus RTOS",
      "Siemens Nucleus NET \u003c V5.2"
    ]
  },
  "referenceLink": "https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf",
  "serverity": "\u9ad8",
  "submitTime": "2021-04-13",
  "title": "Siemens Nucleus\u4ea7\u54c1\u8d8a\u754c\u5199\u5165\u6f0f\u6d1e"
}

CVE-2020-15795 (GCVE-0-2020-15795)

Vulnerability from cvelistv5 – Published: 2021-04-22 20:42 – Updated: 2024-08-04 13:30

Summary

A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions < V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.20), APOGEE PXC Modular (BACnet) (All versions < V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.20), Nucleus NET (All versions < V5.2), Nucleus Source Code (Versions including affected DNS modules), TALON TC Compact (BACnet) (All versions < V3.5.5), TALON TC Modular (BACnet) (All versions < V3.5.5). The DNS domain name label parsing functionality does not properly validate the names in DNS-responses. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition.

Severity

8.1 (High)


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

CWE

CWE-787 - Out-of-bounds Write

Assigner

siemens icscert root

References

2 references

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

Impacted products

8 products

Vendor	Product	Version
Siemens	APOGEE PXC Compact (BACnet)	Affected: All versions < V3.5.5
Siemens	APOGEE PXC Compact (P2 Ethernet)	Affected: All versions < V2.8.20
Siemens	APOGEE PXC Modular (BACnet)	Affected: All versions < V3.5.5
Siemens	APOGEE PXC Modular (P2 Ethernet)	Affected: All versions < V2.8.20
Siemens	Nucleus NET	Affected: All versions < V5.2
Siemens	Nucleus Source Code	Affected: Versions including affected DNS modules
Siemens	TALON TC Compact (BACnet)	Affected: All versions < V3.5.5
Siemens	TALON TC Modular (BACnet)	Affected: All versions < V3.5.5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T13:30:21.684Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "APOGEE PXC Compact (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.5"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "APOGEE PXC Compact (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V2.8.20"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "APOGEE PXC Modular (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.5"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "APOGEE PXC Modular (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V2.8.20"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "Nucleus NET",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V5.2"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "Nucleus Source Code",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "Versions including affected DNS modules"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "TALON TC Compact (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.5"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "TALON TC Modular (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been identified in APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.5), APOGEE PXC Compact (P2 Ethernet) (All versions \u003c V2.8.20), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.5), APOGEE PXC Modular (P2 Ethernet) (All versions \u003c V2.8.20), Nucleus NET (All versions \u003c V5.2), Nucleus Source Code (Versions including affected DNS modules), TALON TC Compact (BACnet) (All versions \u003c V3.5.5), TALON TC Modular (BACnet) (All versions \u003c V3.5.5). The DNS domain name label parsing functionality does not properly validate the names in DNS-responses. The parsing of malformed responses could result in a write past the end of an allocated structure. An attacker with a privileged position in the network could leverage this vulnerability to execute code in the context of the current process or cause a denial-of-service condition."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-08-08T09:20:01.115Z",
        "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "shortName": "siemens"
      },
      "references": [
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-185699.pdf"
        },
        {
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-180579.pdf"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
    "assignerShortName": "siemens",
    "cveId": "CVE-2020-15795",
    "datePublished": "2021-04-22T20:42:19.000Z",
    "dateReserved": "2020-07-15T00:00:00.000Z",
    "dateUpdated": "2024-08-04T13:30:21.684Z",
    "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.