CVE-2025-5372 (GCVE-0-2025-5372)
Vulnerability from cvelistv5
Published
2025-07-04 06:01
Modified
2026-06-08 02:13
Severity ?
5.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE
Summary
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
https://access.redhat.com/errata/RHSA-2025:21977 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:23024 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20610 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24349 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-5372 vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2369388 issue-tracking, x_refsource_REDHAT
Impacted products
Vendor Product Version
libssh libssh Version: 0   ≤
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   Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:0.9.6-16.el8_10   < *
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/o:redhat:enterprise_linux:8::baseos
 Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:0.9.6-16.el8_10   < *
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/o:redhat:enterprise_linux:8::baseos
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   Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:0.9.4-2.el8_4.2   < *
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    cpe:/o:redhat:rhel_aus:8.4::baseos
    cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
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   Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:0.9.4-2.el8_4.2   < *
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
    cpe:/o:redhat:rhel_aus:8.4::baseos
    cpe:/o:redhat:rhel_eus_long_life:8.4::baseos
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   Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:0.9.6-13.el8_8.2   < *
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
    cpe:/o:redhat:rhel_e4s:8.8::baseos
    cpe:/o:redhat:rhel_tus:8.8::baseos
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   Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:0.9.6-13.el8_8.2   < *
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
    cpe:/o:redhat:rhel_e4s:8.8::baseos
    cpe:/o:redhat:rhel_tus:8.8::baseos
 Create a notification for this product.
   Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Unaffected: 0:0.9.6-3.el9_0.2   < *
    cpe:/a:redhat:rhel_e4s:9.0::appstream
    cpe:/o:redhat:rhel_e4s:9.0::baseos
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   Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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   Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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   Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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   Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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   Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Show details on NVD website

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