FKIE_CVE-2025-1125

Vulnerability from fkie_nvd - Published: 2025-03-03 15:15 - Updated: 2025-08-12 14:15
Severity ?
6.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffers size, however it misses to properly check for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculation to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result the hfsplus_open_compressed_real() function will write past of the internal buffer length. This flaw may be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution by-passing secure boot protections.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2025-1125Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2346138Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.htmlMailing List, Vendor Advisory
Impacted products
Vendor Product Version
gnu grub2 *
To clipboard 

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      "value": "When reading data from a hfs filesystem, grub\u0027s hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffers size, however it misses to properly check for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculation to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result the hfsplus_open_compressed_real() function will write past of the internal buffer length. This flaw may be leveraged to corrupt grub\u0027s internal critical data and may result in arbitrary code execution by-passing secure boot protections."
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      "value": "Al leer datos de un sistema de archivos hfs, el m\u00f3dulo hfs filesystem de grub utiliza par\u00e1metros controlados por el usuario de los metadatos del sistema de archivos para calcular el tama\u00f1o de los b\u00faferes internos, sin embargo, no comprueba correctamente si hay desbordamientos de n\u00fameros enteros. Un sistema de archivos manipulado con fines malintencionados puede provocar que algunos de esos c\u00e1lculos de tama\u00f1o de b\u00fafer se desborden, lo que hace que realice una operaci\u00f3n grub_malloc() con un tama\u00f1o menor al esperado. Como resultado, la funci\u00f3n hfsplus_open_compressed_real() escribir\u00e1 m\u00e1s all\u00e1 de la longitud del b\u00fafer interno. Esta falla puede aprovecharse para corromper los datos cr\u00edticos internos de grub y puede resultar en la ejecuci\u00f3n de c\u00f3digo arbitrario que elude las protecciones de arranque seguro."
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  "lastModified": "2025-08-12T14:15:27.730",
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