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GHSA-92RQ-C8CF-PRRQ

Vulnerability from github – Published: 2025-03-12 20:16 – Updated: 2025-11-03 21:33
VLAI
Summary
Ruby SAML allows remote Denial of Service (DoS) with compressed SAML responses
Details

Summary

ruby-saml is susceptible to remote Denial of Service (DoS) with compressed SAML responses.

Ruby-saml uses zlib to decompress SAML responses in case they're compressed. It is possible to bypass the message size check with a compressed assertion since the message size is checked before inflation and not after.

Impact

This issue may lead to remote Denial of Service (DoS).

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.7 (High)
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:P
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "ruby-saml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "ruby-saml"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.13.0"
            },
            {
              "fixed": "1.18.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-25293"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-03-12T20:16:50Z",
    "nvd_published_at": "2025-03-12T21:15:42Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nruby-saml is susceptible to remote Denial of Service (DoS) with compressed SAML responses.\n\nRuby-saml uses zlib to decompress SAML responses in case they\u0027re compressed. It is possible to bypass the message size check with a compressed assertion since the message size is checked before inflation and not after.\n\n### Impact\nThis issue may lead to remote Denial of Service (DoS).",
  "id": "GHSA-92rq-c8cf-prrq",
  "modified": "2025-11-03T21:33:11Z",
  "published": "2025-03-12T20:16:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-92rq-c8cf-prrq"
    },
    {
      "type": "WEB",
      "url": "https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-25293"
    },
    {
      "type": "WEB",
      "url": "https://github.com/SAML-Toolkits/ruby-saml/commit/acac9e9cc0b9a507882c614f25d41f8b47be349a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/SAML-Toolkits/ruby-saml/commit/e2da4c6dae7dc01a4d9cd221395140a67e2b3eb1"
    },
    {
      "type": "WEB",
      "url": "https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released"
    },
    {
      "type": "WEB",
      "url": "https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentials"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/SAML-Toolkits/ruby-saml"
    },
    {
      "type": "WEB",
      "url": "https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-saml/CVE-2025-25293.yml"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/04/msg00011.html"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20250314-0008"
    },
    {
      "type": "ADVISORY",
      "url": "https://securitylab.github.com/advisories/GHSL-2024-355_ruby-saml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "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:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Ruby SAML allows remote Denial of Service (DoS) with compressed SAML responses"
}



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