{
  "id": "CVE-2024-5642",
  "sourceIdentifier": "cna@python.org",
  "published": "2024-06-27T21:15:16.070",
  "lastModified": "2024-07-01T14:15:05.807",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "CPython 3.9 and earlier doesn't disallow configuring an empty list (\"[]\") for SSLContext.set_npn_protocols() which is an invalid value for the underlying OpenSSL API. This results in a buffer over-read when NPN is used (see CVE-2024-5535 for OpenSSL). This vulnerability is of low severity due to NPN being not widely used and specifying an empty list likely being uncommon in-practice (typically a protocol name would be configured)."
    },
    {
      "lang": "es",
      "value": "CPython 3.9 y versiones anteriores no permiten la configuraci\u00f3n de una lista vac\u00eda (\"[]\") para SSLContext.set_npn_protocols(), que es un valor no v\u00e1lido para la API OpenSSL subyacente. Esto da como resultado una lectura excesiva del b\u00fafer cuando se utiliza NPN (consulte CVE-2024-5535 para OpenSSL). Esta vulnerabilidad es de baja gravedad debido a que NPN no se usa ampliamente y especificar una lista vac\u00eda probablemente sea poco com\u00fan en la pr\u00e1ctica (normalmente se configurar\u00eda un nombre de protocolo)."
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2024/06/28/4",
      "source": "cna@python.org"
    },
    {
      "url": "https://github.com/python/cpython/commit/39258d3595300bc7b952854c915f63ae2d4b9c3e",
      "source": "cna@python.org"
    },
    {
      "url": "https://github.com/python/cpython/issues/121227",
      "source": "cna@python.org"
    },
    {
      "url": "https://github.com/python/cpython/pull/23014",
      "source": "cna@python.org"
    },
    {
      "url": "https://jbp.io/2024/06/27/cve-2024-5535-openssl-memory-safety.html",
      "source": "cna@python.org"
    },
    {
      "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/PLP2JI3PJY33YG6P5BZYSSNU66HASXBQ/",
      "source": "cna@python.org"
    }
  ]
}