Vulnerability-Lookup

CVE-2021-39131 (GCVE-0-2021-39131)

Vulnerability from cvelistv5 – Published: 2021-08-17 19:55 – Updated: 2024-08-04 01:58

Title

Improper Handling of Unexpected Data Type in ced

Summary

ced detects character encoding using Google’s compact_enc_det library. In ced v0.1.0, passing data types other than `Buffer` causes the Node.js process to crash. The problem has been patched in ced v1.0.0. As a workaround, before passing an argument to ced, verify it’s a `Buffer` using `Buffer.isBuffer(obj)`.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-241 - Improper Handling of Unexpected Data Type

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/sonicdoe/ced/security/advisori…	x_refsource_CONFIRM
https://github.com/sonicdoe/ced/commit/a4d9f10b6b…	x_refsource_MISC
https://github.com/sonicdoe/ced/releases/tag/v1.0.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
sonicdoe	ced	Affected: < 1.0.0	guessed

Show details on NVD website

JSON

To clipboard

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      "cve": "CVE-2021-39131",
      "id": "CVE-2021-39131",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Improper Handling of Unexpected Data Type in ced",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-39131.json",
      "version": "3"
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  }
}

FKIE_CVE-2021-39131

Vulnerability from fkie_nvd - Published: 2021-08-17 23:15 - Updated: 2026-06-17 04:03

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/sonicdoe/ced/commit/a4d9f10b6bf1cd468d1a5b9a283cdf437f8bb7b3	Patch, Third Party Advisory
security-advisories@github.com	https://github.com/sonicdoe/ced/releases/tag/v1.0.0	Release Notes, Third Party Advisory
security-advisories@github.com	https://github.com/sonicdoe/ced/security/advisories/GHSA-27wq-qx3q-fxm9	Exploit, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/sonicdoe/ced/commit/a4d9f10b6bf1cd468d1a5b9a283cdf437f8bb7b3	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/sonicdoe/ced/releases/tag/v1.0.0	Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/sonicdoe/ced/security/advisories/GHSA-27wq-qx3q-fxm9	Exploit, Patch, Third Party Advisory

Impacted products

	Vendor	Product	Version
	ced_project	ced	0.1.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "ced",
          "vendor": "sonicdoe",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.0.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ced_project:ced:0.1.0:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "0136ACE5-0C6C-450B-A108-F0E93A9F4896",
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            }
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      "lang": "en",
      "value": "ced detects character encoding using Google\u2019s compact_enc_det library. In ced v0.1.0, passing data types other than `Buffer` causes the Node.js process to crash. The problem has been patched in ced v1.0.0. As a workaround, before passing an argument to ced, verify it\u2019s a `Buffer` using `Buffer.isBuffer(obj)`."
    },
    {
      "lang": "es",
      "value": "ced detecta la codificaci\u00f3n de caracteres usando la biblioteca compact_enc_det de Google. En ced versi\u00f3n v0.1.0, pasar tipos de datos distintos a \"Buffer\" hace que el proceso Node.js se bloquee. El problema ha sido parcheado en ced versi\u00f3n v1.0.0. Como soluci\u00f3n, antes de pasar un argumento a ced, verifique que es un \"Buffer\" usando \"Buffer.isBuffer(obj)\"."
    }
  ],
  "id": "CVE-2021-39131",
  "lastModified": "2026-06-17T04:03:07.663",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
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      }
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-08-17T23:15:07.507",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/sonicdoe/ced/commit/a4d9f10b6bf1cd468d1a5b9a283cdf437f8bb7b3"
    },
    {
      "source": "security-advisories@github.com",
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        "Third Party Advisory"
      ],
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    },
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      "source": "security-advisories@github.com",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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        "Patch",
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    },
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        "Third Party Advisory"
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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        "Patch",
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      "url": "https://github.com/sonicdoe/ced/security/advisories/GHSA-27wq-qx3q-fxm9"
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          "value": "CWE-241"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
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          "value": "CWE-755"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-27WQ-QX3Q-FXM9

Vulnerability from github – Published: 2021-08-23 19:42 – Updated: 2021-10-21 14:15

Summary

Improper Handling of Unexpected Data Type in ced

Details

Impact

In ced v0.1.0, passing data types other than Buffer causes the Node.js process to crash.

Patches

The problem has been patched in ced v1.0.0. You can upgrade from v0.1.0 without any breaking changes.

Workarounds

Before passing an argument to ced, verify it’s a Buffer using Buffer.isBuffer(obj).

CVSS score

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/RL:O/RC:C

Base Score: 7.5 (High) Temporal Score: 7.2 (High)

Since ced is a library, the scoring is based on the “reasonable worst-case implementation scenario”, namely, accepting data from untrusted sources over a network and passing it directly to ced. Depending on your specific implementation, the vulnerability’s severity in your program may be different.

Proof of concept

const express = require("express");
const bodyParser = require("body-parser");
const ced = require("ced");

const app = express();

app.use(bodyParser.raw());

app.post("/", (req, res) => {
  const encoding = ced(req.body);

  res.end(encoding);
});

app.listen(3000);

curl --request POST --header "Content-Type: text/plain" --data foo http://localhost:3000 crashes the server.

References

https://github.com/sonicdoe/ced/commit/a4d9f10b6bf1cd468d1a5b9a283cdf437f8bb7b3

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "ced"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-39131"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-241"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-23T17:18:32Z",
    "nvd_published_at": "2021-08-17T23:15:00Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nIn ced v0.1.0, passing data types other than `Buffer` causes the Node.js process to crash.\n\n### Patches\n\nThe problem has been patched in [ced v1.0.0](https://github.com/sonicdoe/ced/releases/tag/v1.0.0). You can upgrade from v0.1.0 without any breaking changes.\n\n### Workarounds\n\nBefore passing an argument to ced, verify it\u2019s a `Buffer` using [`Buffer.isBuffer(obj)`](https://nodejs.org/api/buffer.html#buffer_static_method_buffer_isbuffer_obj).\n\n### CVSS score\n\n[CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/RL:O/RC:C](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/RL:O/RC:C)\n\nBase Score: 7.5 (High)\nTemporal Score: 7.2 (High)\n\nSince ced is a library, the scoring is based on the \u201c[reasonable worst-case implementation scenario](https://www.first.org/cvss/v3.1/user-guide#3-7-Scoring-Vulnerabilities-in-Software-Libraries-and-Similar)\u201d, namely, accepting data from untrusted sources over a network and passing it directly to ced. Depending on your specific implementation, the vulnerability\u2019s severity in your program may be different.\n\n### Proof of concept\n\n```js\nconst express = require(\"express\");\nconst bodyParser = require(\"body-parser\");\nconst ced = require(\"ced\");\n\nconst app = express();\n\napp.use(bodyParser.raw());\n\napp.post(\"/\", (req, res) =\u003e {\n  const encoding = ced(req.body);\n\n  res.end(encoding);\n});\n\napp.listen(3000);\n```\n\n`curl --request POST --header \"Content-Type: text/plain\" --data foo http://localhost:3000` crashes the server.\n\n### References\n\n- https://github.com/sonicdoe/ced/commit/a4d9f10b6bf1cd468d1a5b9a283cdf437f8bb7b3",
  "id": "GHSA-27wq-qx3q-fxm9",
  "modified": "2021-10-21T14:15:51Z",
  "published": "2021-08-23T19:42:28Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/sonicdoe/ced/security/advisories/GHSA-27wq-qx3q-fxm9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39131"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sonicdoe/ced/commit/a4d9f10b6bf1cd468d1a5b9a283cdf437f8bb7b3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sonicdoe/ced"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sonicdoe/ced/releases/tag/v1.0.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Improper Handling of Unexpected Data Type in ced"
}

GSD-2021-39131

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Aliases

CVE-2021-39131

Aliases

CVE-2021-39131

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-39131",
    "description": "ced detects character encoding using Google\u2019s compact_enc_det library. In ced v0.1.0, passing data types other than `Buffer` causes the Node.js process to crash. The problem has been patched in ced v1.0.0. As a workaround, before passing an argument to ced, verify it\u2019s a `Buffer` using `Buffer.isBuffer(obj)`.",
    "id": "GSD-2021-39131"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      "aliases": [
        "CVE-2021-39131"
      ],
      "details": "ced detects character encoding using Google\u2019s compact_enc_det library. In ced v0.1.0, passing data types other than `Buffer` causes the Node.js process to crash. The problem has been patched in ced v1.0.0. As a workaround, before passing an argument to ced, verify it\u2019s a `Buffer` using `Buffer.isBuffer(obj)`.",
      "id": "GSD-2021-39131",
      "modified": "2023-12-13T01:23:16.209841Z",
      "schema_version": "1.4.0"
    }
  },
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      },
      "affects": {
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                  {
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                    "version": {
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          }
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      "impact": {
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          "baseScore": 7.5,
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          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
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          }
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    "gitlab.com": {
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        {
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          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2021-08-27",
          "description": "ced detects character encoding using Google\u0027s `compact_enc_det` library. In ced, passing data types other than `Buffer` causes the Node.js process to crash. As a workaround, before passing an argument to ced, verify it\u0027s a `Buffer` using `Buffer.isBuffer(obj)`.",
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          ],
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          "package_slug": "npm/ced",
          "pubdate": "2021-08-17",
          "solution": "Upgrade to version 1.0.0 or above.",
          "title": "Improper Handling of Exceptional Conditions",
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            "https://nvd.nist.gov/vuln/detail/CVE-2021-39131"
          ],
          "uuid": "cd7a4751-dd44-47f1-8e90-d701a53c0844"
        }
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    },
    "nvd.nist.gov": {
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            }
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        }
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      "lastModifiedDate": "2021-08-27T14:21Z",
      "publishedDate": "2021-08-17T23:15Z"
    }
  }
}

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.

Related by attack behaviour

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.

Action not permitted

CVE-2021-39131 (GCVE-0-2021-39131)

FKIE_CVE-2021-39131

GHSA-27WQ-QX3Q-FXM9

Impact

Patches

Workarounds

CVSS score

Proof of concept

References

GSD-2021-39131

Tags

Sightings

Nomenclature

Related by attack behaviour