Vulnerability-Lookup

CNVD-2021-44272

Vulnerability from cnvd - Published: 2021-06-23

Title

Contiki-NG缓冲区溢出漏洞

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之前版本存在缓冲区溢出漏洞。该漏洞源于未验证TCP数据偏移。攻击者可利用该漏洞造成拒绝服务。

Severity

中

Patch Name

Contiki-NG缓冲区溢出漏洞的补丁

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之前版本存在缓冲区溢出漏洞。该漏洞源于未验证TCP数据偏移。攻击者可利用该漏洞造成拒绝服务。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-mc42-fqfr-h9fp

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-21281

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-2021-21281"
    }
  },
  "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\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u9a8c\u8bc1TCP\u6570\u636e\u504f\u79fb\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\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-mc42-fqfr-h9fp",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-44272",
  "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\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u672a\u9a8c\u8bc1TCP\u6570\u636e\u504f\u79fb\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\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\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Contiki-NG Contiki-NG \u003c4.6"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-21281",
  "serverity": "\u4e2d",
  "submitTime": "2021-06-22",
  "title": "Contiki-NG\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-21281 (GCVE-0-2021-21281)

Vulnerability from cvelistv5 – Published: 2021-06-18 20:25 – Updated: 2024-08-03 18:09

Title

Buffer overflow due to unvalidated TCP data offset

Summary

Contiki-NG is an open-source, cross-platform operating system for internet of things devices. A buffer overflow vulnerability exists in Contiki-NG versions prior to 4.6. After establishing a TCP socket using the tcp-socket library, it is possible for the remote end to send a packet with a data offset that is unvalidated. 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 (High)


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

CWE

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

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/contiki-ng/contiki-ng/security…	x_refsource_CONFIRM
https://github.com/contiki-ng/contiki-ng/pull/1366	x_refsource_MISC

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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            "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-mc42-fqfr-h9fp"
          },
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            "url": "https://github.com/contiki-ng/contiki-ng/pull/1366"
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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.

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CNVD-2021-44272

CVE-2021-21281 (GCVE-0-2021-21281)

Tags

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Nomenclature

Related by attack behaviour