Vulnerability-Lookup

CNVD-2019-07794

Vulnerability from cnvd - Published: 2019-03-22

Title

CUJO Smart Firewall拒绝服务漏洞

Description

CUJO Smart Firewall是美国CUJO公司的一款家庭智能防火墙设备。使用7003版本固件的CUJO Smart Firewall中的mdnscap二进制文件存在拒绝服务漏洞，该漏洞源于在解析mDNS数据包中的标签时，程序未能安全地处理压缩指针。攻击者可通过发送mDNS消息利用该漏洞造成拒绝服务（栈耗尽和mdnscap进程崩溃）。

Severity

中

Formal description

目前厂商暂未发布修复措施解决此安全问题，建议使用此软件的用户随时关注厂商主页或参考网址以获取解决办法：

https://www.getcujo.com/

Reference

https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0671

Impacted products

Name
CUJO Smart Firewall 7003

Show details on source website

JSON

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-4002"
    }
  },
  "description": "CUJO Smart Firewall\u662f\u7f8e\u56fdCUJO\u516c\u53f8\u7684\u4e00\u6b3e\u5bb6\u5ead\u667a\u80fd\u9632\u706b\u5899\u8bbe\u5907\u3002\n\n\u4f7f\u75287003\u7248\u672c\u56fa\u4ef6\u7684CUJO Smart Firewall\u4e2d\u7684mdnscap\u4e8c\u8fdb\u5236\u6587\u4ef6\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u89e3\u6790mDNS\u6570\u636e\u5305\u4e2d\u7684\u6807\u7b7e\u65f6\uff0c\u7a0b\u5e8f\u672a\u80fd\u5b89\u5168\u5730\u5904\u7406\u538b\u7f29\u6307\u9488\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001mDNS\u6d88\u606f\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u6808\u8017\u5c3d\u548cmdnscap\u8fdb\u7a0b\u5d29\u6e83\uff09\u3002",
  "discovererName": "Claudio Bozzato of Cisco Talos.",
  "formalWay": "\u76ee\u524d\u5382\u5546\u6682\u672a\u53d1\u5e03\u4fee\u590d\u63aa\u65bd\u89e3\u51b3\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u5efa\u8bae\u4f7f\u7528\u6b64\u8f6f\u4ef6\u7684\u7528\u6237\u968f\u65f6\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u6216\u53c2\u8003\u7f51\u5740\u4ee5\u83b7\u53d6\u89e3\u51b3\u529e\u6cd5\uff1a\r\n\r\nhttps://www.getcujo.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-07794",
  "openTime": "2019-03-22",
  "products": {
    "product": "CUJO Smart Firewall 7003"
  },
  "referenceLink": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0671",
  "serverity": "\u4e2d",
  "submitTime": "2019-03-20",
  "title": "CUJO Smart Firewall\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}

CVE-2018-4002 (GCVE-0-2018-4002)

Vulnerability from cvelistv5 – Published: 2019-10-31 20:37 – Updated: 2024-08-05 04:57

Summary

An exploitable denial-of-service vulnerability exists in the mdnscap binary of the CUJO Smart Firewall running firmware 7003. When parsing labels in mDNS packets, the firewall unsafely handles label compression pointers, leading to an uncontrolled recursion that eventually exhausts the stack, crashing the mdnscap process. An unauthenticated attacker can send an mDNS message to trigger this vulnerability.

Severity

5.3 (Medium)


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

CWE

denial of service

Assigner

talos mitre root Scorecard

References

1 reference

URL	Tags
https://talosintelligence.com/vulnerability_repor…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	CUJO	Affected: CUJO Smart Firewall - Firmware version 7003

Show details on NVD website

JSON

To clipboard

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    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T04:57:24.634Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2018-0671"
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          "vendor": "n/a",
          "versions": [
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        }
      ],
      "metrics": [
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          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.0"
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      ],
      "providerMetadata": {
        "dateUpdated": "2022-04-19T18:07:54.000Z",
        "orgId": "b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b",
        "shortName": "talos"
      },
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          "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2018-0671"
        }
      ],
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          "ID": "CVE-2018-4002",
          "STATE": "PUBLIC"
        },
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                      "product_name": "CUJO",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "CUJO Smart Firewall - Firmware version 7003"
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        "description": {
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            }
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            "baseSeverity": "Medium",
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  "cveMetadata": {
    "assignerOrgId": "b86d76f8-0f8a-4a96-a78d-d8abfc7fc29b",
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    "datePublished": "2019-10-31T20:37:17.000Z",
    "dateReserved": "2018-01-02T00:00:00.000Z",
    "dateUpdated": "2024-08-05T04:57:24.634Z",
    "state": "PUBLISHED"
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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.

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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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.

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CNVD-2019-07794

CVE-2018-4002 (GCVE-0-2018-4002)

Tags

Sightings

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