FKIE_CVE-2025-0690

Vulnerability from fkie_nvd - Published: 2025-02-24 08:15 - Updated: 2025-05-13 20:15
Severity ?
6.1 (Medium) - CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Summary
The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub's internal critical data and secure boot bypass is not discarded as consequence.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:6990
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2025-0690
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2346123
secalert@redhat.comhttps://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it\u0027s possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub\u0027s internal critical data and secure boot bypass is not discarded as consequence."
    },
    {
      "lang": "es",
      "value": " El comando read se utiliza para leer la entrada del teclado del usuario, mientras que reads mantiene la longitud de la entrada en un valor entero de 32 bits que se utiliza para reasignar el b\u00fafer de l\u00ednea para aceptar el siguiente car\u00e1cter. Durante este proceso, con una l\u00ednea lo suficientemente grande es posible hacer que esta variable se desborde, lo que lleva a una escritura fuera de los l\u00edmites en el b\u00fafer basado en el mont\u00f3n. Este fallo puede aprovecharse para corromper los datos cr\u00edticos internos de grub y la omisi\u00f3n del arranque seguro no se descarta como consecuencia."
    }
  ],
  "id": "CVE-2025-0690",
  "lastModified": "2025-05-13T20:15:25.903",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "PHYSICAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.2,
        "impactScore": 5.9,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-02-24T08:15:09.503",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2025:6990"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2025-0690"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2346123"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}


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