« Volver al listado

CVE-2024-39908

Estado: ModificadaMedia (4.3)—💥 PoC

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.1 has some DoS vulnerabilities when it parses an XML that has many specific characters such as `<`, `0` and `%>`. If you need to parse untrusted XMLs, you many be impacted to these vulnerabilities. The REXML gem 3.3.2 or later include the patches to fix these vulnerabilities. Users are advised to upgrade. Users unable to upgrade should avoid parsing untrusted XML strings.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (2)

Netapp — Bootstrap OSRuby-lang — Rexml

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2024-39908",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-39908",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-07-16T17:58:11.892191Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "ruby",
          "product": "rexml",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.3.2"
            }
          ]
        }
      ]
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ruby-lang:rexml:*:*:*:*:*:ruby:*:*"
          ],
          "vendor": "ruby-lang",
          "product": "rexml",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "3.3.2",
              "versionType": "custom"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2024-07-16T18:15:08.167",
  "references": [
    {
      "url": "https://github.com/ruby/rexml/security/advisories/GHSA-4xqq-m2hx-25v8",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://www.ruby-lang.org/en/news/2024/07/16/dos-rexml-cve-2024-39908",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/ruby/rexml/security/advisories/GHSA-4xqq-m2hx-25v8",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00011.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.netapp.com/advisory/ntap-20250117-0008/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.ruby-lang.org/en/news/2024/07/16/dos-rexml-cve-2024-39908",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": " REXML is an XML toolkit for Ruby. The REXML gem before 3.3.1 has some DoS vulnerabilities when it parses an XML that has many specific characters such as `<`, `0` and `%>`. If you need to parse untrusted XMLs, you many be impacted to these vulnerabilities. The REXML gem 3.3.2 or later include the patches to fix these vulnerabilities. Users are advised to upgrade. Users unable to upgrade should avoid parsing untrusted XML strings."
    },
    {
      "lang": "es",
      "value": "REXML es un conjunto de herramientas XML para Ruby. La gema REXML anterior a 3.3.1 tiene algunas vulnerabilidades DoS cuando analiza un XML que tiene muchos caracteres específicos como `&lt;`, `0` y `%&gt;`. Si necesita analizar archivos XML que no son de confianza, es posible que se vea afectado por estas vulnerabilidades. La gema REXML 3.3.2 o posterior incluye los parches para corregir estas vulnerabilidades. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben evitar analizar cadenas XML que no sean de confianza."
    }
  ],
  "lastModified": "2026-06-17T07:43:00.317",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ruby-lang:rexml:*:*:*:*:*:ruby:*:*",
              "vulnerable": true,
              "matchCriteriaId": "60BE1AEB-FB46-4140-87BF-F8B6D5B0A748",
              "versionEndExcluding": "3.3.2"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "95BA156C-C977-4F0C-8DFB-3FAE9CC8C02D"
            }
          ],
          "operator": "OR"
        },
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "AD7447BC-F315-4298-A822-549942FC118B"
            }
          ],
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}