{"id":68127,"date":"2025-08-30T14:04:15","date_gmt":"2025-08-30T14:04:15","guid":{"rendered":""},"modified":"2025-09-16T11:54:51","modified_gmt":"2025-09-16T17:54:51","slug":"cve-2025-54483-stack-based-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig-3-9-0","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-54483-stack-based-buffer-overflow-vulnerability-in-the-biosig-project-libbiosig-3-9-0\/","title":{"rendered":"CVE-2025-54483: Stack-Based Buffer Overflow Vulnerability in The Biosig Project libbiosig 3.9.0<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

CVE-2025-54483 is a severe cybersecurity vulnerability that affects The Biosig Project libbiosig version 3.9.0 and the Master Branch (35a819fa). The vulnerability lies in the MFER parsing functionality, more specifically, a stack-based buffer overflow vulnerability exists that can lead to arbitrary code execution. Given the ubiquity of this software in the field of biomedical signal processing, this vulnerability could potentially compromise a large number of systems<\/a>, leading to data leakage and unauthorized system access.
\nThis vulnerability is of particular concern due to its severity<\/a> score of 9.8 out of 10 on the CVSS scale, implying that it is extremely dangerous. Exploitation of this vulnerability could lead<\/a> to the execution of malicious code, potentially compromising the integrity, confidentiality, and availability of affected systems.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-54483
\nSeverity: Critical (9.8 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise and potential<\/a> data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

The Biosig Project libbiosig<\/a> | 3.9.0
\nThe Biosig Project<\/a> Master Branch | 35a819fa<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability arises due<\/a> to insufficient bounds checking when parsing MFER files. When the tag of the parsed file is ‘5’, signifying the number of channels, a malicious actor could craft an MFER file with a length greater than 4. This triggers a buffer overflow<\/a>, allowing the attacker to overwrite the stack with arbitrary code. This code could then be executed<\/a>, potentially allowing the attacker to take control of the system or exfiltrate sensitive data.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

While the exact method of exploitation would depend on the specifics of the attacker’s environment and the targeted system, a conceptual example might look something like this:<\/p>\n

#include \n#include \nvoid malicious_func() {\n\/\/ Malicious code here\nprintf(\"System Compromised!\\n\");\n}\nvoid vulnerable_func(char *input) {\nchar buffer[4];\nstrcpy(buffer, input);  \/\/ No bounds checking\n}\nint main(int argc, char **argv) {\nchar exploit[8];\n\/\/ Fill exploit with address of malicious_func\nfor (int i=0; i<8; i++)\nexploit[i] = (char)((int)(&malicious_func) >> (i*8));\nvulnerable_func(exploit);\nreturn 0;\n}<\/code><\/pre>\n
In this example, if the crafted MFER file is provided as input, the `vulnerable_func` function would overflow its buffer<\/a> and overwrite the return address with the address of `malicious_func`, resulting in the execution of the malicious function.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-54483 is a severe cybersecurity vulnerability that affects The Biosig Project libbiosig version 3.9.0 and the Master Branch (35a819fa). The vulnerability lies in the MFER parsing functionality, more specifically, a stack-based buffer overflow vulnerability exists that can lead to arbitrary code execution. Given the ubiquity of this software in the field of biomedical signal […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-68127","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t