PT-2025-34646 · Libbiosig+1 · Libbiosig+1

Mark Bereza · Published 2025-01-01 · Updated 2025-08-25 · CVE-2025-54492

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: libbiosig versions 3.9.0 libbiosig Master Branch (35a819fa)

Description: A stack-based buffer overflow vulnerability exists in the MFER parsing functionality. A specially crafted MFER file can lead to arbitrary code execution. The vulnerability manifests on line 9141 of biosig.c when the Tag is 67, where the address of the integer skew is overflowed instead of buf, potentially causing a stack overflow with smaller values of len.

Recommendations: libbiosig version 3.9.0: At the moment, there is no information about a newer version that contains a fix for this vulnerability. libbiosig Master Branch (35a819fa): At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2025-54492

Affected Products

Debian

Libbiosig

References · 12

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234 · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-54492 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-54492 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-54492 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-54492 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-54492 · Security Note
• https://osv.dev/vulnerability/CVE-2025-54492 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-54492 · Vendor Advisory
• https://twitter.com/CveFindCom/status/1959981906126123250 · Twitter Post
• https://twitter.com/CVEnew/status/1959983148474794119 · Twitter Post
• https://sourceforge.net/p/biosig/mailman/message/59224259 · Note
• https://t.me/CVEtracker/30852 · Telegram Post