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CVE-2023-49606

Estado: ModificadaCrítica (9.8)—

A use-after-free vulnerability exists in the HTTP Connection Headers parsing in Tinyproxy 1.11.1 and Tinyproxy 1.10.0. A specially crafted HTTP header can trigger reuse of previously freed memory, which leads to memory corruption and could lead to remote code execution. An attacker needs to make an unauthenticated HTTP request to trigger this vulnerability.

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 (1)

Tinyproxy Project — Tinyproxy

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-49606",
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  "metrics": {
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        "ssvcData": {
          "id": "CVE-2023-49606",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
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          "version": "2.0.3",
          "timestamp": "2024-05-08T13:44:20.408622Z"
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    "cvssMetricV31": [
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          "attackVector": "NETWORK",
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          "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": [
    {
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      "affectedData": [
        {
          "vendor": "Tinyproxy",
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          "versions": [
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              "version": "1.11.1"
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  "published": "2024-05-01T16:15:07.257",
  "references": [
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      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1889",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "talos-cna@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
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  "descriptions": [
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      "lang": "en",
      "value": "A use-after-free vulnerability exists in the HTTP Connection Headers parsing in Tinyproxy 1.11.1 and Tinyproxy 1.10.0. A specially crafted HTTP header can trigger reuse of previously freed memory, which leads to memory corruption and could lead to remote code execution. An attacker needs to make an unauthenticated HTTP request to trigger this vulnerability."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de use-after-free en el análisis de los encabezados de conexión HTTP en Tinyproxy 1.11.1 y Tinyproxy 1.10.0. Un encabezado HTTP especialmente manipulado puede provocar la reutilización de la memoria previamente liberada, lo que provoca daños en la memoria y podría provocar la ejecución remota de código. Un atacante necesita realizar una solicitud HTTP no autenticada para activar esta vulnerabilidad."
    }
  ],
  "lastModified": "2026-06-17T06:36:13.757",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tinyproxy_project:tinyproxy:1.10.0:*:*:*:*:*:*:*",
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  "sourceIdentifier": "talos-cna@cisco.com"
}