Vulnerability-Lookup

CNVD-2021-44270

Vulnerability from cnvd - Published: 2021-06-23

Title

Contiki-NG无限循环漏洞

Description

Contiki-NG是面向下一代物联网设备的开源跨平台操作系统。 Contiki-NG 4.6之前版本中IPv6邻居请求(NS)消息的处理存在无限循环漏洞。攻击者可利用该漏洞导致拒绝服务。

Severity

高

Patch Name

Contiki-NG无限循环漏洞的补丁

Patch Description

Contiki-NG是面向下一代物联网设备的开源跨平台操作系统。 Contiki-NG 4.6之前版本中IPv6邻居请求(NS)消息的处理存在无限循环漏洞。攻击者可利用该漏洞导致拒绝服务。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

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-rr5j-j8m8-fc4f

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-21279

Impacted products

Name
Contiki-NG Contiki-NG <4.6

Show details on source website

JSON

To clipboard

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-21279"
    }
  },
  "description": "Contiki-NG\u662f\u9762\u5411\u4e0b\u4e00\u4ee3\u7269\u8054\u7f51\u8bbe\u5907\u7684\u5f00\u6e90\u8de8\u5e73\u53f0\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nContiki-NG 4.6\u4e4b\u524d\u7248\u672c\u4e2dIPv6\u90bb\u5c45\u8bf7\u6c42(NS)\u6d88\u606f\u7684\u5904\u7406\u5b58\u5728\u65e0\u9650\u5faa\u73af\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-rr5j-j8m8-fc4f",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-44270",
  "openTime": "2021-06-23",
  "patchDescription": "Contiki-NG\u662f\u9762\u5411\u4e0b\u4e00\u4ee3\u7269\u8054\u7f51\u8bbe\u5907\u7684\u5f00\u6e90\u8de8\u5e73\u53f0\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nContiki-NG 4.6\u4e4b\u524d\u7248\u672c\u4e2dIPv6\u90bb\u5c45\u8bf7\u6c42(NS)\u6d88\u606f\u7684\u5904\u7406\u5b58\u5728\u65e0\u9650\u5faa\u73af\u6f0f\u6d1e\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": "Contiki-NG\u65e0\u9650\u5faa\u73af\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Contiki-NG Contiki-NG \u003c4.6"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-21279",
  "serverity": "\u9ad8",
  "submitTime": "2021-06-22",
  "title": "Contiki-NG\u65e0\u9650\u5faa\u73af\u6f0f\u6d1e"
}

CVE-2021-21279 (GCVE-0-2021-21279)

Vulnerability from cvelistv5 – Published: 2021-06-18 20:40 – Updated: 2024-08-03 18:09

Title

Infinite loop in IPv6 neighbor solicitation processing

Summary

Contiki-NG is an open-source, cross-platform operating system for internet of things devices. In verions prior to 4.6, an attacker can perform a denial-of-service attack by triggering an infinite loop in the processing of IPv6 neighbor solicitation (NS) messages. This type of attack can effectively shut down the operation of the system because of the cooperative scheduling used for the main parts of Contiki-NG and its communication stack. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.

Severity

7.5 (High)


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

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/contiki-ng/contiki-ng/security…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
contiki-ng	contiki-ng	Affected: < 4.6

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-03T18:09:15.131Z",
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            "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-rr5j-j8m8-fc4f"
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        }
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            "confidentialityImpact": "NONE",
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      "title": "Infinite loop in IPv6 neighbor solicitation processing",
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        },
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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.

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.