CVE-2025-5372

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.

CVSS v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2025:21977
https://access.redhat.com/security/cve/CVE-2025-5372	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2369388	Issue Tracking Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:redhat:openshift_container_platform:4.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:6.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:8.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

History

24 Nov 2025, 21:16

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2025:21977 -

Information

Published : 2025-07-04 06:15

Updated : 2025-11-24 21:16

NVD link : CVE-2025-5372

Mitre link : CVE-2025-5372

CVE.ORG link : CVE-2025-5372

JSON object : View

Products Affected

redhat

openshift_container_platform
enterprise_linux

libssh

libssh

CWE

CWE-682

Incorrect Calculation

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