Vulnerability-Lookup

CNVD-2021-94720

Vulnerability from cnvd - Published: 2021-12-06

Title

D-Link DIR-809 fromLogin缓冲区溢出漏洞（CNVD-2021-94720）

Description

D-Link DIR-809是中国友讯（D-Link）公司的一款双频路由器。 D-Link DIR-809 中存在缓冲区溢出漏洞，该漏洞源于产品/fromLogin链接中的sub_8003183C函数未能有效判断数据边界。攻击者可通过POST请求导致缓冲区溢出导致拒绝服务或者代码执行。

Severity

高

Patch Name

D-Link DIR-809 fromLogin缓冲区溢出漏洞（CNVD-2021-94720）的补丁

Patch Description

D-Link DIR-809是中国友讯（D-Link）公司的一款双频路由器。 D-Link DIR-809 中存在缓冲区溢出漏洞，该漏洞源于产品/fromLogin链接中的sub_8003183C函数未能有效判断数据边界。攻击者可通过POST请求导致缓冲区溢出导致拒绝服务或者代码执行。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://www.dlink.com

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-33268

Impacted products

Name
D-Link DIR-809 Ax_FW1.12WWB03_20190410

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-33268",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-33268"
    }
  },
  "description": "D-Link DIR-809\u662f\u4e2d\u56fd\u53cb\u8baf\uff08D-Link\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u53cc\u9891\u8def\u7531\u5668\u3002\n\nD-Link DIR-809 \u4e2d\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4ea7\u54c1/fromLogin\u94fe\u63a5\u4e2d\u7684sub_8003183C\u51fd\u6570\u672a\u80fd\u6709\u6548\u5224\u65ad\u6570\u636e\u8fb9\u754c\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7POST\u8bf7\u6c42\u5bfc\u81f4\u7f13\u51b2\u533a\u6ea2\u51fa\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u6216\u8005\u4ee3\u7801\u6267\u884c\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://www.dlink.com",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-94720",
  "openTime": "2021-12-06",
  "patchDescription": "D-Link DIR-809\u662f\u4e2d\u56fd\u53cb\u8baf\uff08D-Link\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u53cc\u9891\u8def\u7531\u5668\u3002\r\n\r\nD-Link DIR-809 \u4e2d\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4ea7\u54c1/fromLogin\u94fe\u63a5\u4e2d\u7684sub_8003183C\u51fd\u6570\u672a\u80fd\u6709\u6548\u5224\u65ad\u6570\u636e\u8fb9\u754c\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7POST\u8bf7\u6c42\u5bfc\u81f4\u7f13\u51b2\u533a\u6ea2\u51fa\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u6216\u8005\u4ee3\u7801\u6267\u884c\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": "D-Link DIR-809 fromLogin\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-94720\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "D-Link DIR-809 Ax_FW1.12WWB03_20190410"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-33268",
  "serverity": "\u9ad8",
  "submitTime": "2021-12-04",
  "title": "D-Link DIR-809 fromLogin\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-94720\uff09"
}

CVE-2021-33268 (GCVE-0-2021-33268)

Vulnerability from cvelistv5 – Published: 2021-12-01 21:20 – Updated: 2024-08-03 23:42

Summary

D-Link DIR-809 devices with firmware through DIR-809Ax_FW1.12WWB03_20190410 were discovered to contain a stack buffer overflow vulnerability in the function sub_8003183C in /fromLogin. This vulnerability is triggered via a crafted POST request.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

2 references

URL	Tags
https://www.dlink.com/en/security-bulletin/	x_refsource_MISC
https://github.com/Lnkvct/IoT-poc/tree/master/D-L…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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              "x_transferred"
            ],
            "url": "https://www.dlink.com/en/security-bulletin/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln03"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "versions": [
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        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
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          ],
          "url": "https://www.dlink.com/en/security-bulletin/"
        },
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          "tags": [
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          ],
          "url": "https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln03"
        }
      ],
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          "ID": "CVE-2021-33268",
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              {
                "product": {
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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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.

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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.
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CNVD-2021-94720

CVE-2021-33268 (GCVE-0-2021-33268)

Tags

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Nomenclature

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