Vulnerability-Lookup

CNVD-2023-32177

Vulnerability from cnvd - Published: 2023-04-27

Title

TP-LINK TL-WR940N安全特征问题漏洞

Description

TP-LINK TL-WR940N是中国普联（TP-LINK）公司的一款无线路由器。 TP-Link TL-WR940N存在安全特征问题漏洞，该漏洞源于用于会话管理的序列号缺乏足够的随机性。攻击者可利用该漏洞绕过系统上的身份验证。

Severity

高

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://www.tp-link.com/

Reference

https://www.zerodayinitiative.com/advisories/ZDI-22-1614/

Impacted products

Name
TP-Link TL-WR940N 6_211111_3.20.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2022-43636",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2022-43636"
    }
  },
  "description": "TP-LINK TL-WR940N\u662f\u4e2d\u56fd\u666e\u8054\uff08TP-LINK\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u65e0\u7ebf\u8def\u7531\u5668\u3002\n\nTP-Link TL-WR940N\u5b58\u5728\u5b89\u5168\u7279\u5f81\u95ee\u9898\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7528\u4e8e\u4f1a\u8bdd\u7ba1\u7406\u7684\u5e8f\u5217\u53f7\u7f3a\u4e4f\u8db3\u591f\u7684\u968f\u673a\u6027\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u7ed5\u8fc7\u7cfb\u7edf\u4e0a\u7684\u8eab\u4efd\u9a8c\u8bc1\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://www.tp-link.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2023-32177",
  "openTime": "2023-04-27",
  "products": {
    "product": "TP-Link TL-WR940N 6_211111_3.20.1"
  },
  "referenceLink": "https://www.zerodayinitiative.com/advisories/ZDI-22-1614/",
  "serverity": "\u9ad8",
  "submitTime": "2023-03-31",
  "title": "TP-LINK TL-WR940N\u5b89\u5168\u7279\u5f81\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2022-43636 (GCVE-0-2022-43636)

Vulnerability from cvelistv5 – Published: 2023-03-29 00:00 – Updated: 2025-02-12 17:41

Summary

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of TP-Link TL-WR940N 6_211111 3.20.1(US) routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of sufficient randomness in the sequnce numbers used for session managment. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-18334.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-12 17:41 UTC

CWE

CWE-330 - Use of Insufficiently Random Values

Assigner

zdi mitre root Scorecard

References

1 reference

URL	Tags
https://www.zerodayinitiative.com/advisories/ZDI-…

Impacted products

1 product

Vendor	Product	Version
TP-Link	TL-WR940N	Affected: 6_211111 3.20.1(US)

Credits

ExLuck

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T13:40:05.678Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-22-1614/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-43636",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-12T17:41:19.538440Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-12T17:41:25.130Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "TL-WR940N",
          "vendor": "TP-Link",
          "versions": [
            {
              "status": "affected",
              "version": "6_211111 3.20.1(US)"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "ExLuck"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of TP-Link TL-WR940N 6_211111 3.20.1(US) routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of sufficient randomness in the sequnce numbers used for session managment. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-18334."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-330",
              "description": "CWE-330: Use of Insufficiently Random Values",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-29T00:00:00.000Z",
        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "shortName": "zdi"
      },
      "references": [
        {
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-22-1614/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
    "assignerShortName": "zdi",
    "cveId": "CVE-2022-43636",
    "datePublished": "2023-03-29T00:00:00.000Z",
    "dateReserved": "2022-10-21T00:00:00.000Z",
    "dateUpdated": "2025-02-12T17:41:25.130Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.
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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.

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.
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CNVD-2023-32177

CVE-2022-43636 (GCVE-0-2022-43636)

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