GHSA-CXF7-QRC5-9446

Vulnerability from github – Published: 2022-03-01 22:22 – Updated: 2022-03-10 15:56
VLAI
Summary
Remote shell execution vulnerability in image_processing
Details

Impact

When using the #apply method from image_processing to apply a series of operations that are coming from unsanitized user input, this allows the attacker to execute shell commands:

ImageProcessing::Vips.apply({ system: "echo EXECUTED" })
#>> EXECUTED

This method is called internally by Active Storage variants, so Active Storage is vulnerable as well.

Patches

The vulnerability has been fixed in version 1.12.2 of image_processing.

Workarounds

If you're processing based on user input, it's highly recommended that you always sanitize the user input, by allowing only a constrained set of operations. For example:

operations = params[:operations]
  .map { |operation| [operation[:name], *operation[:value]] }
  .select { |name, *| name.to_s.include? %w[resize_to_limit strip ...] } # sanitization

ImageProcessing::Vips.apply(operations)
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "image_processing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-24720"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-03-01T22:22:26Z",
    "nvd_published_at": "2022-03-01T23:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\n\nWhen using the `#apply` method from image_processing to apply a series of operations that are coming from unsanitized user input, this allows the attacker to execute shell commands:\n\n```rb\nImageProcessing::Vips.apply({ system: \"echo EXECUTED\" })\n#\u003e\u003e EXECUTED\n```\n\nThis method is called internally by Active Storage variants, so Active Storage is vulnerable as well.\n\n### Patches\n\nThe vulnerability has been fixed in version 1.12.2 of image_processing.\n\n### Workarounds\n\nIf you\u0027re processing based on user input, it\u0027s highly recommended that you always sanitize the user input, by allowing only a constrained set of operations. For example:\n\n```rb\noperations = params[:operations]\n  .map { |operation| [operation[:name], *operation[:value]] }\n  .select { |name, *| name.to_s.include? %w[resize_to_limit strip ...] } # sanitization\n\nImageProcessing::Vips.apply(operations)\n```",
  "id": "GHSA-cxf7-qrc5-9446",
  "modified": "2022-03-10T15:56:28Z",
  "published": "2022-03-01T22:22:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/janko/image_processing/security/advisories/GHSA-cxf7-qrc5-9446"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24720"
    },
    {
      "type": "WEB",
      "url": "https://github.com/janko/image_processing/commit/038e4574e8f4f4b636a62394e09983c71980dada"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/janko/image_processing"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/image_processing/CVE-2022-24720.yml"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5310"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Remote shell execution vulnerability in image_processing"
}


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