CVE-2025-54487 - The Biosig Project libbiosig MFER Parsing Stack Buffer Overflow

CVE-2025-54487 - The Biosig Project libbiosig MFER Parsing Stack Buffer Overflow

https://cvefeed.io/rssfeed/latest.atom / Mon, 08/25/2025 - 17:36
CVE ID : CVE-2025-54487
Published : Aug. 25, 2025, 2:15 p.m. | 34 minutes ago
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 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
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