GHSA-47M2-26RW-J2JW

Vulnerability from github – Published: 2025-06-05 05:21 – Updated: 2025-06-05 20:15
VLAI?
Summary
ReDoS Vulnerability in Rack::Multipart handle_mime_head
Details

Summary

There is a denial of service vulnerability in the Content-Disposition parsing component of Rack. This is very similar to the previous security issue CVE-2022-44571.

Details

Carefully crafted input can cause Content-Disposition header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is used typically used in multipart parsing. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted.

Credits

Thanks to scyoon for reporting this to the Rails security team

Severity ?
6.6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
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{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "rack"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.1.0"
            },
            {
              "fixed": "3.1.16"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-49007"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-06-05T05:21:34Z",
    "nvd_published_at": "2025-06-04T23:15:21Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nThere is a denial of service vulnerability in the Content-Disposition parsing component of Rack. This is very similar to the previous security issue CVE-2022-44571.\n\n### Details\n\nCarefully crafted input can cause Content-Disposition header parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. This header is used typically used in multipart parsing. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted.\n\n### Credits\n\nThanks to [scyoon](https://hackerone.com/scyoon) for reporting this to the Rails security team",
  "id": "GHSA-47m2-26rw-j2jw",
  "modified": "2025-06-05T20:15:06Z",
  "published": "2025-06-05T05:21:34Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rack/rack/security/advisories/GHSA-47m2-26rw-j2jw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-49007"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rack/rack/commit/4795831a0a310c2d31102749e551b38faab6401f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rack/rack/commit/aed514df37e33907df3c971ed3ca9a0a20ac2901"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rack/rack"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2025-49007.yml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ReDoS Vulnerability in Rack::Multipart handle_mime_head"
}


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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.
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  • 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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