DEBIAN-CVE-2025-5372
- Source
- https://security-tracker.debian.org/tracker/CVE-2025-5372
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-5372.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2025-5372
- Upstream
- Downstream
- Published
- 2025-07-04T06:15:24.930Z
- Modified
- 2026-01-10T14:18:21.132114Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Debian:11 / libssh
Package
- Name
- libssh
- Purl
- pkg:deb/debian/libssh?arch=source
Debian:12 / libssh
Package
- Name
- libssh
- Purl
- pkg:deb/debian/libssh?arch=source
Debian:13 / libssh
Package
- Name
- libssh
- Purl
- pkg:deb/debian/libssh?arch=source
Debian:14 / libssh
Package
- Name
- libssh
- Purl
- pkg:deb/debian/libssh?arch=source