ghsa-r3h5-4grr-4mj6
Vulnerability from github
Published
2025-08-25 15:32
Modified
2025-11-03 21:34
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details

A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.This vulnerability manifests on line 9141 of biosig.c on the current master branch (35a819fa), when the Tag is 67:

            else if (tag==67)     //0x43: Sample skew
            {
                int skew=0;     // [1]
                curPos += ifread(&skew, 1, len,hdr);

In this case, the address of the newly-defined integer skew [1] is overflowed instead of buf. This means a stack overflow can occur using much smaller values of len in this code path.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-54492"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-121"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-25T14:15:35Z",
    "severity": "CRITICAL"
  },
  "details": "A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.This vulnerability manifests on line 9141 of biosig.c on the current master branch (35a819fa), when the Tag is 67:\n\n                else if (tag==67)     //0x43: Sample skew\n                {\n                    int skew=0;     // [1]\n                    curPos += ifread(\u0026skew, 1, len,hdr);\n\nIn this case, the address of the newly-defined integer `skew` \\[1\\] is overflowed instead of `buf`. This means a stack overflow can occur using much smaller values of `len` in this code path.",
  "id": "GHSA-r3h5-4grr-4mj6",
  "modified": "2025-11-03T21:34:23Z",
  "published": "2025-08-25T15:32:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54492"
    },
    {
      "type": "WEB",
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234"
    },
    {
      "type": "WEB",
      "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2234"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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