An update for libssh is now available for openEuler-24.03-LTS Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2025-2131 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-24.03-LTS 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 flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.(CVE-2025-5987) An update for libssh is now available for openEuler-24.03-LTS. 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-2025-2131 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-5987 https://nvd.nist.gov/vuln/detail/CVE-2025-5987 openEuler-24.03-LTS libssh-0.10.5-5.oe2403.aarch64.rpm libssh-debuginfo-0.10.5-5.oe2403.aarch64.rpm libssh-debugsource-0.10.5-5.oe2403.aarch64.rpm libssh-devel-0.10.5-5.oe2403.aarch64.rpm libssh-0.10.5-5.oe2403.src.rpm libssh-0.10.5-5.oe2403.x86_64.rpm libssh-debuginfo-0.10.5-5.oe2403.x86_64.rpm libssh-debugsource-0.10.5-5.oe2403.x86_64.rpm libssh-devel-0.10.5-5.oe2403.x86_64.rpm libssh-help-0.10.5-5.oe2403.noarch.rpm A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes. 2025-09-05 CVE-2025-5987 openEuler-24.03-LTS High 8.1 AV:N/AC:H/PR:N/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-2025-2131