Vulnerability-Lookup

CNVD-2021-16432

Vulnerability from cnvd - Published: 2021-03-11

Title

Contiki缓冲区溢出漏洞

Description

Contiki是一款用于内存受限系统的开源、高度可移植、网络化的多任务操作系统。 Contiki存在缓冲区溢出漏洞，该漏洞源于不对紧急数据指针的值进行完整性检查，允许攻击者通过在TCP数据包内提供任意紧急数据指针偏移来破坏内存。

Severity

低

Patch Name

Contiki缓冲区溢出漏洞的补丁

Patch Description

Contiki是一款用于内存受限系统的开源、高度可移植、网络化的多任务操作系统。 Contiki存在缓冲区溢出漏洞，该漏洞源于不对紧急数据指针的值进行完整性检查，允许攻击者通过在TCP数据包内提供任意紧急数据指针偏移来破坏内存。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-17437

Impacted products

Name
Contiki Contiki 3.0

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-17437",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-17437"
    }
  },
  "description": "Contiki\u662f\u4e00\u6b3e\u7528\u4e8e\u5185\u5b58\u53d7\u9650\u7cfb\u7edf\u7684\u5f00\u6e90\u3001\u9ad8\u5ea6\u53ef\u79fb\u690d\u3001\u7f51\u7edc\u5316\u7684\u591a\u4efb\u52a1\u64cd\u4f5c\u7cfb\u7edf\u3002\n\nContiki\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e0d\u5bf9\u7d27\u6025\u6570\u636e\u6307\u9488\u7684\u503c\u8fdb\u884c\u5b8c\u6574\u6027\u68c0\u67e5\uff0c\u5141\u8bb8\u653b\u51fb\u8005\u901a\u8fc7\u5728TCP\u6570\u636e\u5305\u5185\u63d0\u4f9b\u4efb\u610f\u7d27\u6025\u6570\u636e\u6307\u9488\u504f\u79fb\u6765\u7834\u574f\u5185\u5b58\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://us-cert.cisa.gov/ics/advisories/icsa-20-343-01",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-16432",
  "openTime": "2021-03-11",
  "patchDescription": "Contiki\u662f\u4e00\u6b3e\u7528\u4e8e\u5185\u5b58\u53d7\u9650\u7cfb\u7edf\u7684\u5f00\u6e90\u3001\u9ad8\u5ea6\u53ef\u79fb\u690d\u3001\u7f51\u7edc\u5316\u7684\u591a\u4efb\u52a1\u64cd\u4f5c\u7cfb\u7edf\u3002\r\n\r\nContiki\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e0d\u5bf9\u7d27\u6025\u6570\u636e\u6307\u9488\u7684\u503c\u8fdb\u884c\u5b8c\u6574\u6027\u68c0\u67e5\uff0c\u5141\u8bb8\u653b\u51fb\u8005\u901a\u8fc7\u5728TCP\u6570\u636e\u5305\u5185\u63d0\u4f9b\u4efb\u610f\u7d27\u6025\u6570\u636e\u6307\u9488\u504f\u79fb\u6765\u7834\u574f\u5185\u5b58\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\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Contiki Contiki 3.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-17437",
  "serverity": "\u4f4e",
  "submitTime": "2020-12-18",
  "title": "Contiki\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2020-17437 (GCVE-0-2020-17437)

Vulnerability from cvelistv5 – Published: 2020-12-11 22:24 – Updated: 2024-08-04 13:53

Summary

An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, and the stack is configured to ignore the urgent data, the stack attempts to use the value of the Urgent pointer bytes to separate the Urgent data from the normal data, by calculating the offset at which the normal data should be present in the global buffer. However, the length of this offset is not checked; therefore, for large values of the Urgent pointer bytes, the data pointer can point to memory that is way beyond the data buffer in uip_process in uip.c.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://www.kb.cert.org/vuls/id/815128	x_refsource_MISC
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01	x_refsource_MISC
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_CONFIRM

Date Public

2020-12-08 00:00

Show details on NVD website

JSON

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            ],
            "url": "https://www.kb.cert.org/vuls/id/815128"
          },
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              "x_refsource_MISC",
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          },
          {
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              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf"
          }
        ],
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    ],
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          "url": "https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01"
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                    {
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                          {
                            "version_value": "n/a"
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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.