ghsa-9fg2-2f57-9p5h
Vulnerability from github
Published
2025-02-24 09:35
Modified
2025-05-13 21:30
Severity ?
6.1 (Medium) - CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-0690"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-24T08:15:09Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-9fg2-2f57-9p5h",
  "modified": "2025-05-13T21:30:28Z",
  "published": "2025-02-24T09:35:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-0690"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2025:6990"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2025-0690"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2346123"
    },
    {
      "type": "WEB",
      "url": "https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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