FKIE_CVE-2025-25200

Vulnerability from fkie_nvd - Published: 2025-02-12 18:15 - Updated: 2025-02-12 18:15
Severity ?
9.2 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
Summary
Koa is expressive middleware for Node.js using ES2017 async functions. Prior to versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3, Koa uses an evil regex to parse the `X-Forwarded-Proto` and `X-Forwarded-Host` HTTP headers. This can be exploited to carry out a Denial-of-Service attack. Versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3 fix the issue.
References
security-advisories@github.comhttps://github.com/koajs/koa/blob/master/lib/request.js#L259
security-advisories@github.comhttps://github.com/koajs/koa/blob/master/lib/request.js#L404
security-advisories@github.comhttps://github.com/koajs/koa/commit/5054af6e31ffd451a4151a1fe144cef6e5d0d83c
security-advisories@github.comhttps://github.com/koajs/koa/commit/5f294bb1c7c8d9c61904378d250439a321bffd32
security-advisories@github.comhttps://github.com/koajs/koa/commit/93fe903fc966635a991bcf890cfc3427d33a1a08
security-advisories@github.comhttps://github.com/koajs/koa/releases/tag/2.15.4
security-advisories@github.comhttps://github.com/koajs/koa/security/advisories/GHSA-593f-38f6-jp5m
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Koa is expressive middleware for Node.js using ES2017 async functions. Prior to versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3, Koa uses an evil regex to parse the `X-Forwarded-Proto` and `X-Forwarded-Host` HTTP headers. This can be exploited to carry out a Denial-of-Service attack. Versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3 fix the issue."
    },
    {
      "lang": "es",
      "value": "Koa es un middleware expresivo para Node.js que utiliza funciones asincr\u00f3nicas ES2017. En versiones anteriores a las 0.21.2, 1.7.1, 2.15.4 y 3.0.0-alpha.3, Koa utiliza una expresi\u00f3n regular maliciosa para analizar los encabezados HTTP `X-Forwarded-Proto` y `X-Forwarded-Host`. Esto se puede aprovechar para llevar a cabo un ataque de denegaci\u00f3n de servicio. Las versiones 0.21.2, 1.7.1, 2.15.4 y 3.0.0-alpha.3 solucionan el problema."
    }
  ],
  "id": "CVE-2025-25200",
  "lastModified": "2025-02-12T18:15:28.110",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.2,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-02-12T18:15:28.110",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/koajs/koa/blob/master/lib/request.js#L259"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/koajs/koa/blob/master/lib/request.js#L404"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/koajs/koa/commit/5054af6e31ffd451a4151a1fe144cef6e5d0d83c"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/koajs/koa/commit/5f294bb1c7c8d9c61904378d250439a321bffd32"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/koajs/koa/commit/93fe903fc966635a991bcf890cfc3427d33a1a08"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/koajs/koa/releases/tag/2.15.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/koajs/koa/security/advisories/GHSA-593f-38f6-jp5m"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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  • 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 patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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