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CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
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.
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.
Basic Information
ID
CVE-2025-54492
Source
talos
Published
Aug 25, 2025 at 13:53
Affected Product
Vendor
The Biosig Project
Product
libbiosig
Version
3.9.0
Affected Versions
The Biosig Project libbiosig 3.9.0
The Biosig Project libbiosig Master Branch (35a819fa)
The Biosig Project libbiosig Master Branch (35a819fa)