CVE-2017-1000253
Estado: AnalizadaAlta (7.8)⚠ Explotación activa
Linux distributions that have not patched their long-term kernels with https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015). This kernel vulnerability was fixed in April 2015 by commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (backported to Linux 3.10.77 in May 2015), but it was not recognized as a security threat. With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base.
Leer descripción completaMostrar menos
Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the "gap" between the stack and the binary.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 11%
- Percentil entre todas las CVEs puntuadas: 96
- Fecha de la puntuación: 6/10/2026
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).
CISA KEV — explotada activamente
- Añadida al catálogo: 9/9/2024
- Plazo de remediación: 30/9/2024
- Uso conocido en ransomware: Known
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation90 % - Impacto principal
T1059Command and Scripting Interpreterexecution85 % - Impacto secundario
T1548Abuse Elevation Control Mechanismprivilege escalation75 %
Vulnerabilidad local de kernel (AV:L, PR:L) que permite escalada de privilegios mediante manipulación de memoria en load_elf_binary(), explotada activamente por ransomware. Logra ejecución de código con altos permisos (C:H, I:H, A:H).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (3)
CWE
- CWE-119
- CWE-119
Referencias
- http://www.securityfocus.com/bid/101010
- http://www.securitytracker.com/id/1039434
- https://access.redhat.com/errata/RHSA-2017:2793
- https://access.redhat.com/errata/RHSA-2017:2794
- https://access.redhat.com/errata/RHSA-2017:2795
- https://access.redhat.com/errata/RHSA-2017:2796
- https://access.redhat.com/errata/RHSA-2017:2797
- https://access.redhat.com/errata/RHSA-2017:2798
- https://access.redhat.com/errata/RHSA-2017:2799
- https://access.redhat.com/errata/RHSA-2017:2800
- https://access.redhat.com/errata/RHSA-2017:2801
- https://access.redhat.com/errata/RHSA-2017:2802
- https://www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt
- http://www.securityfocus.com/bid/101010
- http://www.securitytracker.com/id/1039434
- https://access.redhat.com/errata/RHSA-2017:2793
- https://access.redhat.com/errata/RHSA-2017:2794
- https://access.redhat.com/errata/RHSA-2017:2795
- https://access.redhat.com/errata/RHSA-2017:2796
- https://access.redhat.com/errata/RHSA-2017:2797
- https://access.redhat.com/errata/RHSA-2017:2798
- https://access.redhat.com/errata/RHSA-2017:2799
- https://access.redhat.com/errata/RHSA-2017:2800
- https://access.redhat.com/errata/RHSA-2017:2801
- https://access.redhat.com/errata/RHSA-2017:2802
- https://www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-1000253
JSON original (NVD)
Mostrar
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"value": "Linux distributions that have not patched their long-term kernels with https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015). This kernel vulnerability was fixed in April 2015 by commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (backported to Linux 3.10.77 in May 2015), but it was not recognized as a security threat. With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base. Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the \"gap\" between the stack and the binary."
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"value": "Existe una vulnerabilidad en las distribuciones de Linux que no han parcheado sus kernels de largo mantenimiento con https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (confirmada el 14 de abril de 2015). Esta vulnerabilidad en los kernels se parcheó en abril de 2015 por el commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (aplicado a Linux 3.10.77 en mayo de 2015), pero no se reconoció como amenaza de seguridad. Con CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE habilitado y una estrategia vertical normal de asignación de direcciones, load_elf_binary() intentará mapear un binario PIE en un rango de direcciones inmediatamente inferior a mm->mmap_base. Por desgracia, load_elf_ binary() no tiene en cuenta la necesidad de asignar el suficiente espacio para todo el binario, lo que significa que, estando el primer segmento PT_LOAD está mapeado bajo mm->mmap_base, los siguientes segmentos PT_LOAD acaban mapeados sobre mm->mmap_base en el área que debería ser el \"hueco\" entre la pila y el binario."
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