UBUNTU-CVE-2025-54487 (CVE-2025-54487)
Vulnerability from osv_ubuntu – Published: 2025-08-25 14:15 – Updated: 2026-09-02 16:10 – Source website
VLAI
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 8842 of biosig.c on the current master branch (35a819fa), when the Tag is 12: else if (tag==12) //0x0C { // sampling resolution if (len>6) fprintf(stderr,"Warning MFER tag12 incorrect length %i>6\n",len); val32 = 0; int8_t v8; curPos += ifread(&UnitCode,1,1,hdr); curPos += ifread(&v8,1,1,hdr); curPos += ifread(buf,1,len-2,hdr); In addition to values of len greater than 130 triggering a buffer overflow, a value of len smaller than 2 will also trigger a buffer overflow due to an integer underflow when computing len-2 in this code path.
Severity
9.8 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "biosig-tools",
"binary_version": "2.3.3-1ubuntu0.1~esm1"
},
{
"binary_name": "libbiosig3",
"binary_version": "2.3.3-1ubuntu0.1~esm1"
},
{
"binary_name": "octave-biosig",
"binary_version": "2.3.3-1ubuntu0.1~esm1"
},
{
"binary_name": "python3-biosig",
"binary_version": "2.3.3-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "biosig",
"purl": "pkg:deb/ubuntu/biosig@2.3.3-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.2-4",
"2.1.2-4build1",
"2.1.2-4build2",
"2.3.3-1",
"2.3.3-1build1",
"2.3.3-1build2",
"2.3.3-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "biosig-tools",
"binary_version": "2.6.0-1ubuntu1+esm1"
},
{
"binary_name": "libbiosig3",
"binary_version": "2.6.0-1ubuntu1+esm1"
},
{
"binary_name": "octave-biosig",
"binary_version": "2.6.0-1ubuntu1+esm1"
},
{
"binary_name": "python3-biosig",
"binary_version": "2.6.0-1ubuntu1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "biosig",
"purl": "pkg:deb/ubuntu/biosig@2.6.0-1ubuntu1+esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.0-1build2",
"2.5.2-1",
"2.5.2-1build1",
"2.5.2-2",
"2.6.0-1",
"2.6.0-1build1",
"2.6.0-1ubuntu1",
"2.6.0-1ubuntu1+esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "biosig-tools",
"binary_version": "3.9.0-1"
},
{
"binary_name": "libbiosig3",
"binary_version": "3.9.0-1"
},
{
"binary_name": "octave-biosig",
"binary_version": "3.9.0-1"
},
{
"binary_name": "python3-biosig",
"binary_version": "3.9.0-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "biosig",
"purl": "pkg:deb/ubuntu/biosig@3.9.0-1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.6.1-1build3",
"3.9.0-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "biosig-tools",
"binary_version": "3.9.0-1ubuntu0.1~esm1"
},
{
"binary_name": "libbiosig3",
"binary_version": "3.9.0-1ubuntu0.1~esm1"
},
{
"binary_name": "octave-biosig",
"binary_version": "3.9.0-1ubuntu0.1~esm1"
},
{
"binary_name": "python3-biosig",
"binary_version": "3.9.0-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:26.04:LTS",
"name": "biosig",
"purl": "pkg:deb/ubuntu/biosig@3.9.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.9.0-1",
"3.9.0-1build1",
"3.9.0-1build2",
"3.9.0-1build3",
"3.9.0-1ubuntu0.1~esm1"
]
}
],
"aliases": [],
"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 8842 of biosig.c on the current master branch (35a819fa), when the Tag is 12: else if (tag==12) //0x0C { // sampling resolution if (len\u003e6) fprintf(stderr,\"Warning MFER tag12 incorrect length %i\u003e6\\n\",len); val32 = 0; int8_t v8; curPos += ifread(\u0026UnitCode,1,1,hdr); curPos += ifread(\u0026v8,1,1,hdr); curPos += ifread(buf,1,len-2,hdr); In addition to values of `len` greater than 130 triggering a buffer overflow, a value of `len` smaller than 2 will also trigger a buffer overflow due to an integer underflow when computing `len-2` in this code path.",
"id": "UBUNTU-CVE-2025-54487",
"modified": "2026-09-02T16:10:14Z",
"published": "2025-08-25T14:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-54487"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-54487"
},
{
"type": "REPORT",
"url": "https://sourceforge.net/p/biosig/mailman/message/59224259/"
},
{
"type": "REPORT",
"url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-54487"
]
}
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Sightings
| Author | Source | Type | Date | Other |
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Nomenclature
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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