Vulnerability-Lookup

CNVD-2022-06693

Vulnerability from cnvd - Published: 2022-01-25

Title

NETGEAR R6400v2缓冲区溢出漏洞

Description

NETGEAR R6400v2是美国网件（Netgear）公司的一款路由器。连接两个或多个网络的硬件设备，在网络间起网关的作用。 NETGEAR R6400v2存在缓冲区溢出漏洞，该漏洞源于进程在将用户提供的数据复制到固定长度的基于堆栈的缓冲区之前未能正确验证它的长度。攻击者可以利用该漏洞在 root环境中执行代码。

Severity

高

Patch Name

NETGEAR R6400v2缓冲区溢出漏洞的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://kb.netgear.com/000064361/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Multiple-Products-PSV-2021-0168

Reference

https://www.zerodayinitiative.com/advisories/ZDI-21-1303/

Impacted products

Name
NETGEAR R6400v2 <1.0.4.120

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-34991",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-34991"
    }
  },
  "description": "NETGEAR R6400v2\u662f\u7f8e\u56fd\u7f51\u4ef6\uff08Netgear\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u8def\u7531\u5668\u3002\u8fde\u63a5\u4e24\u4e2a\u6216\u591a\u4e2a\u7f51\u7edc\u7684\u786c\u4ef6\u8bbe\u5907\uff0c\u5728\u7f51\u7edc\u95f4\u8d77\u7f51\u5173\u7684\u4f5c\u7528\u3002\n\nNETGEAR R6400v2\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8fdb\u7a0b\u5728\u5c06\u7528\u6237\u63d0\u4f9b\u7684\u6570\u636e\u590d\u5236\u5230\u56fa\u5b9a\u957f\u5ea6\u7684\u57fa\u4e8e\u5806\u6808\u7684\u7f13\u51b2\u533a\u4e4b\u524d\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u5b83\u7684\u957f\u5ea6\u3002\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8be5\u6f0f\u6d1e\u5728 root\u73af\u5883\u4e2d\u6267\u884c\u4ee3\u7801\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://kb.netgear.com/000064361/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Multiple-Products-PSV-2021-0168",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2022-06693",
  "openTime": "2022-01-25",
  "patchDescription": "NETGEAR R6400v2\u662f\u7f8e\u56fd\u7f51\u4ef6\uff08Netgear\uff09\u516c\u53f8\u7684\u4e00\u6b3e\u8def\u7531\u5668\u3002\u8fde\u63a5\u4e24\u4e2a\u6216\u591a\u4e2a\u7f51\u7edc\u7684\u786c\u4ef6\u8bbe\u5907\uff0c\u5728\u7f51\u7edc\u95f4\u8d77\u7f51\u5173\u7684\u4f5c\u7528\u3002\r\n\r\nNETGEAR R6400v2\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8fdb\u7a0b\u5728\u5c06\u7528\u6237\u63d0\u4f9b\u7684\u6570\u636e\u590d\u5236\u5230\u56fa\u5b9a\u957f\u5ea6\u7684\u57fa\u4e8e\u5806\u6808\u7684\u7f13\u51b2\u533a\u4e4b\u524d\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u5b83\u7684\u957f\u5ea6\u3002\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8be5\u6f0f\u6d1e\u5728 root\u73af\u5883\u4e2d\u6267\u884c\u4ee3\u7801\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": "NETGEAR R6400v2\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "NETGEAR R6400v2 \u003c1.0.4.120"
  },
  "referenceLink": "https://www.zerodayinitiative.com/advisories/ZDI-21-1303/",
  "serverity": "\u9ad8",
  "submitTime": "2021-11-13",
  "title": "NETGEAR R6400v2\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-34991 (GCVE-0-2021-34991)

Vulnerability from cvelistv5 – Published: 2021-11-15 15:40 – Updated: 2024-08-04 00:26

Summary

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400v2 1.0.4.106_10.0.80 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UPnP service, which listens on TCP port 5000 by default. When parsing the uuid request header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14110.

Severity

8.8 (High)


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

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

zdi mitre root

References

2 references

URL	Tags
https://www.zerodayinitiative.com/advisories/ZDI-…	x_refsource_MISC
https://kb.netgear.com/000064361/Security-Advisor…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
NETGEAR	R6400v2	Affected: 1.0.4.106_10.0.80

Credits

anonymous

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:26:55.733Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-1303/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://kb.netgear.com/000064361/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Multiple-Products-PSV-2021-0168"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "R6400v2",
          "vendor": "NETGEAR",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.4.106_10.0.80"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "anonymous"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400v2 1.0.4.106_10.0.80 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UPnP service, which listens on TCP port 5000 by default. When parsing the uuid request header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14110."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121: Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-01-13T21:44:43.000Z",
        "orgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
        "shortName": "zdi"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-1303/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://kb.netgear.com/000064361/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Multiple-Products-PSV-2021-0168"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "zdi-disclosures@trendmicro.com",
          "ID": "CVE-2021-34991",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "R6400v2",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "1.0.4.106_10.0.80"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "NETGEAR"
              }
            ]
          }
        },
        "credit": "anonymous",
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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              "lang": "eng",
              "value": "This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6400v2 1.0.4.106_10.0.80 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the UPnP service, which listens on TCP port 5000 by default. When parsing the uuid request header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-14110."
            }
          ]
        },
        "impact": {
          "cvss": {
            "vectorString": "CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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        },
        "problemtype": {
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            },
            {
              "name": "https://kb.netgear.com/000064361/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Multiple-Products-PSV-2021-0168",
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            }
          ]
        }
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e",
    "assignerShortName": "zdi",
    "cveId": "CVE-2021-34991",
    "datePublished": "2021-11-15T15:40:16.000Z",
    "dateReserved": "2021-06-17T00:00:00.000Z",
    "dateUpdated": "2024-08-04T00:26:55.733Z",
    "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.
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-2022-06693

CVE-2021-34991 (GCVE-0-2021-34991)

Tags

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Nomenclature

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