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CVE-2019-12526

Estado: ModificadaCrítica (9.8)—

An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap.

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 (5)

Canonical — Ubuntu LinuxDebian — Debian LinuxFedoraproject — FedoraOpensuse — LeapSquid-cache — Squid

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2019-12526",
  "cveTags": [],
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
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        "userInteractionRequired": false
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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",
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  "published": "2019-11-26T17:15:10.843",
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          "value": "CWE-787"
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      "lang": "en",
      "value": "An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap."
    },
    {
      "lang": "es",
      "value": "Se detectó un problema en Squid versiones anteriores a 4.9. El manejo de respuesta URN en Squid sufre de un desbordamiento de búfer en la región heap de la memoria. Cuando se reciben datos desde un servidor remoto en respuesta a una petición URN, Squid no se asegura de que la respuesta pueda caber dentro del búfer. Esto conlleva al desbordamiento de datos controlados por el atacante en la pila."
    }
  ],
  "lastModified": "2026-06-17T02:14:49.630",
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}