Vulnerability-Lookup

CNVD-2020-33256

Vulnerability from cnvd - Published: 2020-06-15

Title

OPC Foundation UA .NET Standard代码问题漏洞

Description

OPC Foundation UA.NET Standard是OPC基金会（OPC Foundation）的一套用于开发OPC UA应用程序的统一架构标准。 OPC Foundation UA.NET Standard中会话的处理过程存在安全漏洞，该漏洞源于在对对象执行操作时缺少适当的锁定操作。攻击者可利用该漏洞导致拒绝服务。

Severity

中

Patch Name

OPC Foundation UA .NET Standard代码问题漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-8867.pdf

Reference

https://www.zerodayinitiative.com/advisories/ZDI-20-536/

Impacted products

Name
OPC Foundation UA.NET Standard

Show details on source website

JSON

To clipboard

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-8867"
    }
  },
  "description": "OPC Foundation UA.NET Standard\u662fOPC\u57fa\u91d1\u4f1a\uff08OPC Foundation\uff09\u7684\u4e00\u5957\u7528\u4e8e\u5f00\u53d1OPC UA\u5e94\u7528\u7a0b\u5e8f\u7684\u7edf\u4e00\u67b6\u6784\u6807\u51c6\u3002\n\nOPC Foundation UA.NET Standard\u4e2d\u4f1a\u8bdd\u7684\u5904\u7406\u8fc7\u7a0b\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u5bf9\u5bf9\u8c61\u6267\u884c\u64cd\u4f5c\u65f6\u7f3a\u5c11\u9002\u5f53\u7684\u9501\u5b9a\u64cd\u4f5c\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-8867.pdf",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-33256",
  "openTime": "2020-06-15",
  "patchDescription": "OPC Foundation UA.NET Standard\u662fOPC\u57fa\u91d1\u4f1a\uff08OPC Foundation\uff09\u7684\u4e00\u5957\u7528\u4e8e\u5f00\u53d1OPC UA\u5e94\u7528\u7a0b\u5e8f\u7684\u7edf\u4e00\u67b6\u6784\u6807\u51c6\u3002\r\n\r\nOPC Foundation UA.NET Standard\u4e2d\u4f1a\u8bdd\u7684\u5904\u7406\u8fc7\u7a0b\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u5bf9\u5bf9\u8c61\u6267\u884c\u64cd\u4f5c\u65f6\u7f3a\u5c11\u9002\u5f53\u7684\u9501\u5b9a\u64cd\u4f5c\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "OPC Foundation UA .NET Standard\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "OPC Foundation UA.NET Standard"
  },
  "referenceLink": "https://www.zerodayinitiative.com/advisories/ZDI-20-536/",
  "serverity": "\u4e2d",
  "submitTime": "2020-04-21",
  "title": "OPC Foundation UA .NET Standard\u4ee3\u7801\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-8867 (GCVE-0-2020-8867)

Vulnerability from cvelistv5 – Published: 2020-04-22 20:51 – Updated: 2024-08-04 10:12

Summary

This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard 1.04.358.30. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of sessions. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to create a denial-of-service condition against the application. Was ZDI-CAN-10295.

Severity

5.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Assigner

zdi mitre root Scorecard

References

2 references

URL	Tags
https://www.zerodayinitiative.com/advisories/ZDI-…	x_refsource_MISC
https://opcfoundation.org/SecurityBulletins/OPC%2…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
OPC Foundation	UA .NET Standard	Affected: 1.04.358.30

Credits

Steven Seeley (mr_me) and Chris Anastasio (muffin)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
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        "providerMetadata": {
          "dateUpdated": "2024-08-04T10:12:11.060Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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              "x_transferred"
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            "url": "https://www.zerodayinitiative.com/advisories/ZDI-20-536/"
          },
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            "tags": [
              "x_refsource_MISC",
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            ],
            "url": "https://opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2020-8867.pdf"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "UA .NET Standard",
          "vendor": "OPC Foundation",
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        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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      "x_legacyV4Record": {
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          "ASSIGNER": "zdi-disclosures@trendmicro.com",
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          "STATE": "PUBLIC"
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              {
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        "credit": "Steven Seeley (mr_me) and Chris Anastasio (muffin)",
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            }
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        "impact": {
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}

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.

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.

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Action not permitted

CNVD-2020-33256

CVE-2020-8867 (GCVE-0-2020-8867)

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