GHSA-MPJM-V997-C4H4

Vulnerability from github – Published: 2021-10-12 21:59 – Updated: 2022-08-11 16:56
VLAI?
Summary
Electron's sandboxed renderers can obtain thumbnails of arbitrary files through the nativeImage API
Details

Impact

This vulnerability allows a sandboxed renderer to request a "thumbnail" image of an arbitrary file on the user's system. The thumbnail can potentially include significant parts of the original file, including textual data in many cases.

All current stable versions of Electron are affected.

Patches

This was fixed with #30728, and the following Electron versions contain the fix:

  • 15.0.0-alpha.10
  • 14.0.0
  • 13.3.0
  • 12.1.0
  • 11.5.0

Workarounds

If your app enables contextIsolation, this vulnerability is significantly more difficult for an attacker to exploit.

Further, if your app does not depend on the createThumbnailFromPath API, then you can simply disable the functionality. In the main process, before the 'ready' event:

delete require('electron').nativeImage.createThumbnailFromPath

For more information

If you have any questions or comments about this advisory, email us at security@electronjs.org.

Severity ?
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "11.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "12.0.0"
            },
            {
              "fixed": "12.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "13.0.0"
            },
            {
              "fixed": "13.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-39184"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-668",
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-10-12T18:54:44Z",
    "nvd_published_at": "2021-10-12T19:15:00Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nThis vulnerability allows a sandboxed renderer to request a \"thumbnail\" image of an arbitrary file on the user\u0027s system. The thumbnail can potentially include significant parts of the original file, including textual data in many cases.\n\nAll current stable versions of Electron are affected.\n\n### Patches\nThis was fixed with #30728, and the following Electron versions contain the fix:\n\n- 15.0.0-alpha.10\n- 14.0.0\n- 13.3.0\n- 12.1.0\n- 11.5.0\n\n### Workarounds\nIf your app enables `contextIsolation`, this vulnerability is significantly more difficult for an attacker to exploit.\n\nFurther, if your app does not depend on the `createThumbnailFromPath` API, then you can simply disable the functionality. In the main process, before the \u0027ready\u0027 event:\n```js\ndelete require(\u0027electron\u0027).nativeImage.createThumbnailFromPath\n```\n\n### For more information\nIf you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org).",
  "id": "GHSA-mpjm-v997-c4h4",
  "modified": "2022-08-11T16:56:02Z",
  "published": "2021-10-12T21:59:13Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/security/advisories/GHSA-mpjm-v997-c4h4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39184"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/pull/30728"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/pull/30728/commits/8fed645bd671f359ee52d806c075ec4e07eda17f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/electron/electron"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Electron\u0027s sandboxed renderers can obtain thumbnails of arbitrary files through the nativeImage API"
}


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  • 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.



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