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CVE-2023-47118

Estado: ModificadaCrítica (9.8)—

ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time. A heap buffer overflow issue was discovered in ClickHouse server. An attacker could send a specially crafted payload to the native interface exposed by default on port 9000/tcp, triggering a bug in the decompression logic of T64 codec that crashes the ClickHouse server process. This attack does not require authentication. Note that this exploit can also be triggered via HTTP protocol, however, the attacker will need a valid credential as the HTTP authentication take places first. This issue has been fixed in version 23.10.2.13-stable, 23.9.4.11-stable, 23.8.6.16-lts and 23.3.16.7-lts.

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).

Tecnologías afectadas (2)

Clickhouse — ClickhouseClickhouse — Clickhouse Cloud

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2023-47118",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "exploitabilityScore": 3.9
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  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "ClickHouse",
          "product": "ClickHouse",
          "versions": [
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              "status": "affected",
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  "published": "2023-12-20T17:15:08.623",
  "references": [
    {
      "url": "https://github.com/ClickHouse/ClickHouse/security/advisories/GHSA-g22g-p6q2-x39v",
      "tags": [
        "Vendor Advisory"
      ],
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      "url": "https://github.com/ClickHouse/ClickHouse/security/advisories/GHSA-g22g-p6q2-x39v",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
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          "lang": "en",
          "value": "CWE-122"
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    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
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  "descriptions": [
    {
      "lang": "en",
      "value": "ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time. A heap buffer overflow issue was discovered in ClickHouse server. An attacker could send a specially crafted payload to the native interface exposed by default on port 9000/tcp, triggering a bug in the decompression logic of T64 codec that crashes the ClickHouse server process. This attack does not require authentication. Note that this exploit can also be triggered via HTTP protocol, however, the attacker will need a valid credential as the HTTP authentication take places first. This issue has been fixed in version 23.10.2.13-stable, 23.9.4.11-stable, 23.8.6.16-lts and 23.3.16.7-lts.\n"
    },
    {
      "lang": "es",
      "value": "ClickHouse® es un sistema de gestión de bases de datos orientado a columnas de código abierto que permite generar informes de datos analíticos en tiempo real. Se descubrió un problema de desbordamiento de búfer de almacenamiento dinámico en el servidor ClickHouse. Un atacante podría enviar un payload especialmente manipulado a la interfaz nativa expuesta de forma predeterminada en el puerto 9000/tcp, lo que desencadenaría un error en la lógica de descompresión del códec T64 que bloquearía el proceso del servidor ClickHouse. Este ataque no requiere autenticación. Tenga en cuenta que esta explotación también se puede activar a través del protocolo HTTP; sin embargo, el atacante necesitará unas credenciales válidas ya que la autenticación HTTP se realiza primero. Este problema se solucionó en la versión 23.10.2.13-stable, 23.9.4.11-stable, 23.8.6.16-lts y 23.3.16.7-lts."
    }
  ],
  "lastModified": "2026-06-17T06:32:11.390",
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