Vulnerability-Lookup

CVE-2024-34346 (GCVE-0-2024-34346)

Vulnerability from cvelistv5 – Published: 2024-05-07 21:02 – Updated: 2024-08-02 02:51

Title

Deno contains a permission escalation via open of privileged files with missing `--deny` flag

Summary

Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. The Deno sandbox may be unexpectedly weakened by allowing file read/write access to privileged files in various locations on Unix and Windows platforms. For example, reading `/proc/self/environ` may provide access equivalent to `--allow-env`, and writing `/proc/self/mem` may provide access equivalent to `--allow-all`. Users who grant read and write access to the entire filesystem may not realize that these access to these files may have additional, unintended consequences. The documentation did not reflect that this practice should be undertaken to increase the strength of the security sandbox. Users who run code with `--allow-read` or `--allow-write` may unexpectedly end up granting additional permissions via file-system operations. Deno 1.43 and above require explicit `--allow-all` access to read or write `/etc`, `/dev` on unix platform (as well as `/proc` and `/sys` on linux platforms), and any path starting with `\\` on Windows.

Severity ?

8.5 (High)


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

CWE

CWE-863 - Incorrect Authorization

Assigner

GitHub_M

References

URL

Tags

https://github.com/denoland/deno/security/advisor…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	denoland	deno	Affected: < 1.43.0

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
      {
        "affected": [
          {
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              "cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*"
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            "vendor": "deno",
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                "versionType": "custom"
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        "metrics": [
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                    "Technical Impact": "total"
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
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          "tags": [
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          ],
          "url": "https://github.com/denoland/deno/security/advisories/GHSA-23rx-c3g5-hv9w"
        }
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        "advisory": "GHSA-23rx-c3g5-hv9w",
        "discovery": "UNKNOWN"
      },
      "title": "Deno contains a permission escalation via open of privileged files with missing `--deny` flag"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "datePublished": "2024-05-07T21:02:16.809Z",
    "dateReserved": "2024-05-02T06:36:32.437Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
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GHSA-23RX-C3G5-HV9W

Vulnerability from github – Published: 2024-05-08 14:33 – Updated: 2024-05-08 14:33

Summary

Deno permission escalation vulnerability via open of privileged files with missing `--deny` flag

Details

The Deno sandbox may be unexpectedly weakened by allowing file read/write access to privileged files in various locations on Unix and Windows platforms. For example, reading /proc/self/environ may provide access equivalent to --allow-env, and writing /proc/self/mem may provide access equivalent to --allow-all.

Users who grant read and write access to the entire filesystem may not realize that these access to these files may have additional, unintended consequences. The documentation did not reflect that this practice should be undertaken to increase the strength of the security sandbox.

Impact

Users who run code with --allow-read or --allow-write may unexpectedly end up granting additional permissions via file-system operations.

Patches

Deno 1.43 and above require explicit --allow-all access to read or write /etc, /dev on unix platform (as well as /proc and /sys on linux platforms), and any path starting with \\ on Windows.

Workarounds

The security sandbox in previous versions of Deno allows for denial of access to these files, but it requires an explicit addition of deny flags: --deny-read=/dev --deny-read=/sys --deny-read=/proc --deny-read=/etc --deny-write=/dev --deny-write=/sys --deny-write=/proc --deny-write=/etc. Note that symlinks in allowed locations may defeat this protection in earlier versions of Deno.

Reporters

This vulnerability was reported by a number of analysts. Thanks to oliver@secfault-security.com, finn@secfault-security.com, @leesh3288, and @cristianstaicu for their reports and analysis.

Severity ?

8.4 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "deno"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.43.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-34346"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-05-08T14:33:16Z",
    "nvd_published_at": "2024-05-07T21:15:09Z",
    "severity": "HIGH"
  },
  "details": "The Deno sandbox may be unexpectedly weakened by allowing file read/write access to privileged files in various locations on Unix and Windows platforms. For example, reading `/proc/self/environ` may provide access equivalent to `--allow-env`, and writing `/proc/self/mem` may provide access equivalent to `--allow-all`.\n\nUsers who grant read and write access to the entire filesystem may not realize that these access to these files may have additional, unintended consequences. The documentation did not reflect that this practice should be undertaken to increase the strength of the security sandbox. \n\n### Impact\n\nUsers who run code with `--allow-read` or `--allow-write` may unexpectedly end up granting additional permissions via file-system operations.\n\n### Patches\n\nDeno 1.43 and above require explicit `--allow-all` access to read or write `/etc`, `/dev` on unix platform (as well as `/proc` and `/sys` on linux platforms), and any path starting with `\\\\` on Windows.\n\n### Workarounds\n\nThe security sandbox in previous versions of Deno allows for denial of access to these files, but it requires an explicit addition of deny flags: `--deny-read=/dev --deny-read=/sys --deny-read=/proc --deny-read=/etc --deny-write=/dev --deny-write=/sys --deny-write=/proc --deny-write=/etc`. Note that symlinks in allowed locations may defeat this protection in earlier versions of Deno.\n\n### Reporters\n\nThis vulnerability was reported by a number of analysts. Thanks to [oliver@secfault-security.com](mailto:oliver@secfault-security.com), [finn@secfault-security.com](mailto:finn@secfault-security.com), @leesh3288, and @cristianstaicu for their reports and analysis.\n",
  "id": "GHSA-23rx-c3g5-hv9w",
  "modified": "2024-05-08T14:33:16Z",
  "published": "2024-05-08T14:33:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/denoland/deno/security/advisories/GHSA-23rx-c3g5-hv9w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-34346"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/denoland/deno"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Deno permission escalation vulnerability via open of privileged files with missing `--deny` flag"
}

FKIE_CVE-2024-34346

Vulnerability from fkie_nvd - Published: 2024-05-07 21:15 - Updated: 2025-09-04 19:23

Severity ?

8.4 (High) - CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
9.0 (Critical) - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/denoland/deno/security/advisories/GHSA-23rx-c3g5-hv9w	Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://github.com/denoland/deno/security/advisories/GHSA-23rx-c3g5-hv9w	Vendor Advisory

Impacted products

	Vendor	Product	Version
	deno	deno	*

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "06DA92BA-A265-4813-B567-82DE245184D3",
              "versionEndExcluding": "1.43.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Deno is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults. The Deno sandbox may be unexpectedly weakened by allowing file read/write access to privileged files in various locations on Unix and Windows platforms. For example, reading `/proc/self/environ` may provide access equivalent to `--allow-env`, and writing `/proc/self/mem` may provide access equivalent to `--allow-all`. Users who grant read and write access to the entire filesystem may not realize that these access to these files may have additional, unintended consequences. The documentation did not reflect that this practice should be undertaken to increase the strength of the security sandbox. Users who run code with `--allow-read` or `--allow-write` may unexpectedly end up granting additional permissions via file-system operations. Deno 1.43 and above require explicit `--allow-all` access to read or write `/etc`, `/dev` on unix platform (as well as `/proc` and `/sys` on linux platforms), and any path starting with `\\\\` on Windows.\n"
    },
    {
      "lang": "es",
      "value": "Deno es un tiempo de ejecuci\u00f3n de JavaScript, TypeScript y WebAssembly con valores predeterminados seguros. La sandbox de Deno puede verse debilitado inesperadamente al permitir el acceso de lectura/escritura de archivos privilegiados en varias ubicaciones en plataformas Unix y Windows. Por ejemplo, leer `/proc/self/environ` puede proporcionar un acceso equivalente a `--allow-env`, y escribir `/proc/self/mem` puede proporcionar un acceso equivalente a `--allow-all`. Es posible que los usuarios que otorgan acceso de lectura y escritura a todo el sistema de archivos no se den cuenta de que este acceso a estos archivos puede tener consecuencias adicionales no deseadas. La documentaci\u00f3n no refleja que esta pr\u00e1ctica deba llevarse a cabo para aumentar la solidez del entorno limitado de seguridad. Los usuarios que ejecutan c\u00f3digo con `--allow-read` o `--allow-write` pueden terminar inesperadamente otorgando permisos adicionales a trav\u00e9s de operaciones del sistema de archivos. Deno 1.43 y superiores requieren acceso expl\u00edcito `--allow-all` para leer o escribir `/etc`, `/dev` en plataformas Unix (as\u00ed como `/proc` y `/sys` en plataformas Linux), y cualquier ruta que comienza con `\\\\` en Windows."
    }
  ],
  "id": "CVE-2024-34346",
  "lastModified": "2025-09-04T19:23:06.737",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.7,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.0,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 6.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-05-07T21:15:09.270",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/denoland/deno/security/advisories/GHSA-23rx-c3g5-hv9w"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/denoland/deno/security/advisories/GHSA-23rx-c3g5-hv9w"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

Sightings

Author	Source	Type	Date

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

CVE-2024-34346 (GCVE-0-2024-34346)

GHSA-23RX-C3G5-HV9W

Impact

Patches

Workarounds

Reporters

FKIE_CVE-2024-34346

Tags

Sightings

Nomenclature