CVE-2025-5372— Libssh: incorrect return code handling in ssh_kdf() in libssh
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I. Basic Information for CVE-2025-5372
Vulnerability Information
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Vulnerability Title
Libssh: incorrect return code handling in ssh_kdf() in libssh
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
数值计算不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
libssh 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libssh是libssh组织的一个用于访问SSH服务的C语言开发包，它能够执行远程命令、文件传输，同时为远程的程序提供安全的传输通道。 libssh存在安全漏洞，该漏洞源于ssh_kdf函数返回值解释不一致，可能导致使用未初始化的加密密钥缓冲区。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| libssh | libssh | 0 ~ 0.11.2 | - | |
| Red Hat | Red Hat Enterprise Linux 8 | 0:0.9.6-16.el8_10 ~ * | cpe:/a:redhat:enterprise_linux:8::appstream | |
| Red Hat | Red Hat Enterprise Linux 8 | 0:0.9.6-16.el8_10 ~ * | cpe:/a:redhat:enterprise_linux:8::appstream | |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | 0:0.9.6-3.el9_0.2 ~ * | cpe:/a:redhat:rhel_e4s:9.0::appstream | |
| Red Hat | Red Hat Enterprise Linux 10 | - | cpe:/o:redhat:enterprise_linux:10 | |
| Red Hat | Red Hat Enterprise Linux 6 | - | cpe:/o:redhat:enterprise_linux:6 | |
| Red Hat | Red Hat Enterprise Linux 7 | - | cpe:/o:redhat:enterprise_linux:7 | |
| Red Hat | Red Hat Enterprise Linux 9 | - | cpe:/o:redhat:enterprise_linux:9 | |
| Red Hat | Red Hat OpenShift Container Platform 4 | - | cpe:/a:redhat:openshift:4 |
II. Public POCs for CVE-2025-5372
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|---|
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V. Comments for CVE-2025-5372
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