CVE-2025-5372
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/07/2025
Last modified:
04/07/2025
Description
A flaw was found in libssh versions built with OpenSSL versions older than 3.0, specifically in the ssh_kdf() function responsible for key derivation. Due to inconsistent interpretation of return values where OpenSSL uses 0 to indicate failure and libssh uses 0 for success—the function may mistakenly return a success status even when key derivation fails. This results in uninitialized cryptographic key buffers being used in subsequent communication, potentially compromising SSH sessions' confidentiality, integrity, and availability.
Impact
Base Score 3.x
5.00
Severity 3.x
MEDIUM