GSD-2021-31875

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
** DISPUTED ** 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."
Aliases
Aliases
CVE-2021-31875
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{
  "GSD": {
    "alias": "CVE-2021-31875",
    "description": "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.",
    "id": "GSD-2021-31875"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-31875"
      ],
      "details": "** DISPUTED ** 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.\"",
      "id": "GSD-2021-31875",
      "modified": "2023-12-13T01:23:13.683531Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-31875",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
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              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
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                          "version_value": "n/a"
                        }
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                    }
                  }
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              "vendor_name": "n/a"
            }
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      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "** DISPUTED ** 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.\""
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
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            "description": [
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                "value": "n/a"
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://huntr.dev/bounties/1-other-mjs/",
            "refsource": "MISC",
            "url": "https://huntr.dev/bounties/1-other-mjs/"
          },
          {
            "name": "https://github.com/418sec/mjs/pull/2",
            "refsource": "MISC",
            "url": "https://github.com/418sec/mjs/pull/2"
          },
          {
            "name": "https://github.com/cesanta/mjs/releases/tag/1.26",
            "refsource": "MISC",
            "url": "https://github.com/cesanta/mjs/releases/tag/1.26"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:cesanta:mongooseos_mjs:1.26:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3C30A2D2-9123-439A-9D5C-7372183FCA23",
                    "vulnerable": true
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                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "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.\""
          },
          {
            "lang": "es",
            "value": "En el archivo mjs_json.c en Cesanta MongooseOS mJS 1.26, una cadena JSON formada maliciosamente puede desencadenar un desbordamiento de b\u00fafer en la regi\u00f3n heap de la memoria por un paso en la funci\u00f3n mjs_json_parse, lo que potencialmente puede conllevar a un redireccionamiento del flujo de control"
          }
        ],
        "id": "CVE-2021-31875",
        "lastModified": "2024-04-11T01:11:39.780",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 7.5,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
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              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
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              "exploitabilityScore": 3.9,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
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        },
        "published": "2021-04-29T02:15:08.043",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/418sec/mjs/pull/2"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Release Notes",
              "Third Party Advisory"
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            "url": "https://github.com/cesanta/mjs/releases/tag/1.26"
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          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Third Party Advisory"
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            "url": "https://huntr.dev/bounties/1-other-mjs/"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-193"
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              {
                "lang": "en",
                "value": "CWE-787"
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            "source": "nvd@nist.gov",
            "type": "Primary"
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        ]
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    }
  }
}



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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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  • 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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