FKIE_CVE-2025-24294

Vulnerability from fkie_nvd - Published: 2025-07-12 04:15 - Updated: 2025-07-16 14:15
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
The attack vector is a potential Denial of Service (DoS). The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet. An attacker can craft a malicious DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the name decompression process consumes a large amount of CPU resources, as the library does not limit the resulting length of the name. This resource consumption can cause the application thread to become unresponsive, resulting in a Denial of Service condition.
References
support@hackerone.comhttps://www.ruby-lang.org/en/news/2025/07/08/dos-resolv-cve-2025-24294/
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.ruby-lang.org/en/news/2025/07/08/dos-resolv-cve-2025-24294/
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The attack vector is a potential Denial of Service (DoS). The vulnerability is caused by an insufficient check on the length of a decompressed domain name within a DNS packet.\r\n\r\nAn attacker can craft a malicious DNS packet containing a highly compressed domain name. When the resolv library parses such a packet, the name decompression process consumes a large amount of CPU resources, as the library does not limit the resulting length of the name.\r\n\r\nThis resource consumption can cause the application thread to become unresponsive, resulting in a Denial of Service condition."
    },
    {
      "lang": "es",
      "value": "El vector de ataque es una posible denegaci\u00f3n de servicio (DoS). La vulnerabilidad se debe a una verificaci\u00f3n insuficiente de la longitud de un nombre de dominio descomprimido dentro de un paquete DNS. Un atacante puede manipular un paquete DNS malicioso que contenga un nombre de dominio muy comprimido. Cuando la librer\u00eda resolv analiza dicho paquete, el proceso de descompresi\u00f3n del nombre consume una gran cantidad de recursos de CPU, ya que la librer\u00eda no limita la longitud resultante del nombre. Este consumo de recursos puede provocar que el hilo de la aplicaci\u00f3n deje de responder, lo que resulta en una condici\u00f3n de denegaci\u00f3n de servicio."
    }
  ],
  "id": "CVE-2025-24294",
  "lastModified": "2025-07-16T14:15:23.037",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-07-12T04:15:46.683",
  "references": [
    {
      "source": "support@hackerone.com",
      "url": "https://www.ruby-lang.org/en/news/2025/07/08/dos-resolv-cve-2025-24294/"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://www.ruby-lang.org/en/news/2025/07/08/dos-resolv-cve-2025-24294/"
    }
  ],
  "sourceIdentifier": "support@hackerone.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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