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CVE-2017-18269

Estado: ModificadaCrítica (9.8)—

An SSE2-optimized memmove implementation for i386 in sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S in the GNU C Library (aka glibc or libc6) 2.21 through 2.27 does not correctly perform the overlapping memory check if the source memory range spans the middle of the address space, resulting in corrupt data being produced by the copy operation. This may disclose information to context-dependent attackers, or result in a denial of service, or, possibly, code execution.

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)

GNU — Glibc

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2017-18269",
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
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  "affected": [
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  "published": "2018-05-18T16:29:00.227",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-119"
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      "value": "An SSE2-optimized memmove implementation for i386 in sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S in the GNU C Library (aka glibc or libc6) 2.21 through 2.27 does not correctly perform the overlapping memory check if the source memory range spans the middle of the address space, resulting in corrupt data being produced by the copy operation. This may disclose information to context-dependent attackers, or result in a denial of service, or, possibly, code execution."
    },
    {
      "lang": "es",
      "value": "Una implementación memmove optimizada para SSE2 para i386 en sysdeps/i386/i686/multiarch/memcpy-sse2-unaligned.S en GNU C Library (también conocida como glibc o libc6), desde la versión 2.21 hasta la 2.27 no realiza correctamente la comprobación de solapamiento de memoria si el rango de memoria de origen se extiende por el medio del espacio de memoria. Esto resulta en que se produzcan datos corruptos en la operación de copia. Esto podría revelar información a atacantes que dependen del contexto o resultar en una denegación de servicio (DoS) o una posible ejecución de código."
    }
  ],
  "lastModified": "2026-06-17T01:12:31.043",
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