An update for libssh is now available for openEuler-20.03-LTS-SP4 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2025-2128 Final 1.0 1.0 2025-09-05 Initial 2025-09-05 2025-09-05 openEuler SA Tool V1.0 2025-09-05 libssh security update An update for libssh is now available for openEuler-20.03-LTS-SP4 The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote programs. With its Secure FTP implementation, you can play with remote files easily, without third-party programs others than libcrypto (from openssl). Security Fix(es): A vulnerability classified as critical was found in libssh up to 0.11.1.The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.As an impact it is known to affect confidentiality, integrity, and availability.Upgrading to version 0.11.2 eliminates this vulnerability.(CVE-2025-4877) A vulnerability, which was classified as problematic, has been found in libssh up to 0.11.1.Using CWE to declare the problem leads to CWE-824. The product accesses or uses a pointer that has not been initialized.Impacted is confidentiality, integrity, and availability.Upgrading to version 0.11.2 eliminates this vulnerability.(CVE-2025-4878) 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.(CVE-2025-5372) An update for libssh is now available for openEuler-20.03-LTS-SP4. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High libssh https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2128 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-4877 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-4878 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-5372 https://nvd.nist.gov/vuln/detail/CVE-2025-4877 https://nvd.nist.gov/vuln/detail/CVE-2025-4878 https://nvd.nist.gov/vuln/detail/CVE-2025-5372 openEuler-20.03-LTS-SP4 libssh-0.9.4-11.oe2003sp4.aarch64.rpm libssh-debuginfo-0.9.4-11.oe2003sp4.aarch64.rpm libssh-debugsource-0.9.4-11.oe2003sp4.aarch64.rpm libssh-devel-0.9.4-11.oe2003sp4.aarch64.rpm libssh-0.9.4-11.oe2003sp4.src.rpm libssh-0.9.4-11.oe2003sp4.x86_64.rpm libssh-debuginfo-0.9.4-11.oe2003sp4.x86_64.rpm libssh-debugsource-0.9.4-11.oe2003sp4.x86_64.rpm libssh-devel-0.9.4-11.oe2003sp4.x86_64.rpm libssh-help-0.9.4-11.oe2003sp4.noarch.rpm A vulnerability classified as critical was found in libssh up to 0.11.1.The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.As an impact it is known to affect confidentiality, integrity, and availability.Upgrading to version 0.11.2 eliminates this vulnerability. 2025-09-05 CVE-2025-4877 openEuler-20.03-LTS-SP4 Medium 4.5 AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L libssh security update 2025-09-05 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2128 A vulnerability, which was classified as problematic, has been found in libssh up to 0.11.1.Using CWE to declare the problem leads to CWE-824. The product accesses or uses a pointer that has not been initialized.Impacted is confidentiality, integrity, and availability.Upgrading to version 0.11.2 eliminates this vulnerability. 2025-09-05 CVE-2025-4878 openEuler-20.03-LTS-SP4 Low 3.6 AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N libssh security update 2025-09-05 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2128 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. 2025-09-05 CVE-2025-5372 openEuler-20.03-LTS-SP4 High 8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H libssh security update 2025-09-05 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2128