Vulnerability-Lookup

GHSA-FR76-2WP8-FP92

Vulnerability from github – Published: 2022-02-10 23:35 – Updated: 2023-09-05 23:08

Summary

Insecure template handling in Express-handlebars

Details

Express-handlebars is a Handlebars view engine for Express. Express-handlebars mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.

A fix is discussed in https://github.com/express-handlebars/express-handlebars/pull/163

Severity

8.6 (High)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "express-handlebars"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-32820"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200",
      "CWE-94"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-17T18:45:00Z",
    "nvd_published_at": "2021-05-14T19:15:00Z",
    "severity": "HIGH"
  },
  "details": "Express-handlebars is a Handlebars view engine for Express. Express-handlebars mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have `.handlebars` appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.\n\nA fix is discussed in https://github.com/express-handlebars/express-handlebars/pull/163",
  "id": "GHSA-fr76-2wp8-fp92",
  "modified": "2023-09-05T23:08:50Z",
  "published": "2022-02-10T23:35:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32820"
    },
    {
      "type": "WEB",
      "url": "https://github.com/express-handlebars/express-handlebars/pull/163"
    },
    {
      "type": "WEB",
      "url": "https://github.com/express-handlebars/express-handlebars/commit/78c47a235c4ad7bc2674bddd8ec2721567ed8c72"
    },
    {
      "type": "WEB",
      "url": "https://github.com/express-handlebars/express-handlebars#danger-"
    },
    {
      "type": "WEB",
      "url": "https://github.com/express-handlebars/express-handlebars/blob/78c47a235c4ad7bc2674bddd8ec2721567ed8c72/README.md#danger-"
    },
    {
      "type": "ADVISORY",
      "url": "https://securitylab.github.com/advisories/GHSL-2021-018-express-handlebars"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/package/express-handlebars"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Insecure template handling in Express-handlebars"
}

CVE-2021-32820 (GCVE-0-2021-32820)

Vulnerability from cvelistv5 – Published: 2021-05-14 18:25 – Updated: 2024-08-03 23:33

Title

File disclosure in Express Handlebars

Summary

Express-handlebars is a Handlebars view engine for Express. Express-handlebars mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.

Severity

No CVSS data available.

CWE

CWE-200 - Information Exposure

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://securitylab.github.com/advisories/GHSL-20…	x_refsource_CONFIRM
https://www.npmjs.com/package/express-handlebars	x_refsource_MISC
https://github.com/express-handlebars/express-han…	x_refsource_MISC
https://github.com/express-handlebars/express-han…	x_refsource_MISC
https://github.com/express-handlebars/express-han…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
express-handlebars	express-handlebars	Affected: <= 5.3.2

Show details on NVD website

JSON

To clipboard

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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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Action not permitted

GHSA-FR76-2WP8-FP92

CVE-2021-32820 (GCVE-0-2021-32820)

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Sightings

Nomenclature

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