{
  "id": "CVE-2021-32771",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2022-08-04T21:15:07.907",
  "lastModified": "2022-08-10T18:08:13.533",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Contiki-NG is an open-source, cross-platform operating system for IoT devices. In affected versions it is possible to cause a buffer overflow when copying an IPv6 address prefix in the RPL-Classic implementation in Contiki-NG. In order to trigger the vulnerability, the Contiki-NG system must have joined an RPL DODAG. After that, an attacker can send a DAO packet with a Target option that contains a prefix length larger than 128 bits. The problem was fixed after the release of Contiki-NG 4.7. Users unable to upgrade may apply the patch in Contiki-NG PR #1615."
    },
    {
      "lang": "es",
      "value": "Contiki-NG es un sistema operativo de c\u00f3digo abierto y multiplataforma para dispositivos IoT. En las versiones afectadas es posible causar un desbordamiento de b\u00fafer cuando es copiado un prefijo de direcci\u00f3n IPv6 en la implementaci\u00f3n RPL-Classic en Contiki-NG. Para desencadenar la vulnerabilidad, el sistema Contiki-NG debe haberse unido a un DODAG RPL. Despu\u00e9s, un atacante puede enviar un paquete DAO con una opci\u00f3n Target que contenga una longitud de prefijo superior a 128 bits. El problema ha sido solucionado tras el lanzamiento de Contiki-NG versi\u00f3n 4.7. Los usuarios que no puedan actualizar pueden aplicar el parche en Contiki-NG PR #1615"
    }
  ],
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          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
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        "exploitabilityScore": 2.2,
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      "url": "https://github.com/contiki-ng/contiki-ng/pull/1615",
      "source": "security-advisories@github.com",
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      "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-jqjf-v7v9-xp6w",
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