Vulnerability-Lookup

CNVD-2021-39567

Vulnerability from cnvd - Published: 2021-06-04

Title

Cesanta Mongoose存在未明漏洞

Description

Cesanta Mongoose是爱尔兰Cesanta公司的一套嵌入式服务器库，它包括TCP、HTTP客户端和服务器、WenSocket客户端和服务器等功能。 Cesanta MongooseOS mJS 1.26 存在安全漏洞，该漏洞源于恶意形成的JSON字符串可以触发mjs JSON解析中基于堆的缓冲区溢出，攻击者可利用该漏洞可能会导致控制流的重定向。

Severity

高

Patch Name

Cesanta Mongoose存在未明漏洞的补丁

Patch Description

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://github.com/418sec/mjs/pull/2

Reference

https://github.com/418sec/mjs/pull/2

Impacted products

Name
Cesanta Mongoose 1.26

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-31875",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-31875"
    }
  },
  "description": "Cesanta Mongoose\u662f\u7231\u5c14\u5170Cesanta\u516c\u53f8\u7684\u4e00\u5957\u5d4c\u5165\u5f0f\u670d\u52a1\u5668\u5e93\uff0c\u5b83\u5305\u62ecTCP\u3001HTTP\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u3001WenSocket\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7b49\u529f\u80fd\u3002\n\nCesanta MongooseOS mJS 1.26 \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u6076\u610f\u5f62\u6210\u7684JSON\u5b57\u7b26\u4e32\u53ef\u4ee5\u89e6\u53d1mjs JSON\u89e3\u6790\u4e2d\u57fa\u4e8e\u5806\u7684\u7f13\u51b2\u533a\u6ea2\u51fa\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u80fd\u4f1a\u5bfc\u81f4\u63a7\u5236\u6d41\u7684\u91cd\u5b9a\u5411\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://github.com/418sec/mjs/pull/2",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-39567",
  "openTime": "2021-06-04",
  "patchDescription": "Cesanta Mongoose\u662f\u7231\u5c14\u5170Cesanta\u516c\u53f8\u7684\u4e00\u5957\u5d4c\u5165\u5f0f\u670d\u52a1\u5668\u5e93\uff0c\u5b83\u5305\u62ecTCP\u3001HTTP\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u3001WenSocket\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7b49\u529f\u80fd\u3002\r\n\r\nCesanta MongooseOS mJS 1.26 \u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u6076\u610f\u5f62\u6210\u7684JSON\u5b57\u7b26\u4e32\u53ef\u4ee5\u89e6\u53d1mjs JSON\u89e3\u6790\u4e2d\u57fa\u4e8e\u5806\u7684\u7f13\u51b2\u533a\u6ea2\u51fa\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u80fd\u4f1a\u5bfc\u81f4\u63a7\u5236\u6d41\u7684\u91cd\u5b9a\u5411\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": "Cesanta Mongoose\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Cesanta Mongoose 1.26"
  },
  "referenceLink": "https://github.com/418sec/mjs/pull/2",
  "serverity": "\u9ad8",
  "submitTime": "2021-06-04",
  "title": "Cesanta Mongoose\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}

CVE-2021-31875 (GCVE-0-2021-31875)

Vulnerability from cvelistv5 – Published: 2021-04-29 00:00 – Updated: 2024-08-03 23:10 Disputed

Summary

In mjs_json.c in Cesanta MongooseOS mJS 1.26, a maliciously formed JSON string can trigger an off-by-one heap-based buffer overflow in mjs_json_parse, which can potentially lead to redirection of control flow. NOTE: the original reporter disputes the significance of this finding because "there isn’t very much of an opportunity to exploit this reliably for an information leak, so there isn’t any real security impact."

Severity

No CVSS data available.

CWE

Assigner

mitre

References

3 references

URL	Tags
https://huntr.dev/bounties/1-other-mjs/
https://github.com/418sec/mjs/pull/2
https://github.com/cesanta/mjs/releases/tag/1.26

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:10:30.787Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://huntr.dev/bounties/1-other-mjs/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/418sec/mjs/pull/2"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/cesanta/mjs/releases/tag/1.26"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In mjs_json.c in Cesanta MongooseOS mJS 1.26, a maliciously formed JSON string can trigger an off-by-one heap-based buffer overflow in mjs_json_parse, which can potentially lead to redirection of control flow. NOTE: the original reporter disputes the significance of this finding because \"there isn\u2019t very much of an opportunity to exploit this reliably for an information leak, so there isn\u2019t any real security impact.\""
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-12-27T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://huntr.dev/bounties/1-other-mjs/"
        },
        {
          "url": "https://github.com/418sec/mjs/pull/2"
        },
        {
          "url": "https://github.com/cesanta/mjs/releases/tag/1.26"
        }
      ],
      "tags": [
        "disputed"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-31875",
    "datePublished": "2021-04-29T00:00:00.000Z",
    "dateReserved": "2021-04-29T00:00:00.000Z",
    "dateUpdated": "2024-08-03T23:10:30.787Z",
    "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.

Action not permitted

CNVD-2021-39567

CVE-2021-31875 (GCVE-0-2021-31875)

Tags

Sightings

Nomenclature