vulnerability
CentOS Linux: CVE-2023-25136: Moderate: openssh security update (CESA-2023:2645)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:M/Au:N/C:N/I:P/A:C) | Feb 3, 2023 | May 15, 2023 | Jan 28, 2025 |
Severity
8
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:C)
Published
Feb 3, 2023
Added
May 15, 2023
Modified
Jan 28, 2025
Description
OpenSSH server (sshd) 9.1 introduced a double-free vulnerability during options.kex_algorithms handling. This is fixed in OpenSSH 9.2. The double free can be leveraged, by an unauthenticated remote attacker in the default configuration, to jump to any location in the sshd address space. One third-party report states "remote code execution is theoretically possible."
Solutions
centos-upgrade-opensshcentos-upgrade-openssh-askpasscentos-upgrade-openssh-askpass-debuginfocentos-upgrade-openssh-clientscentos-upgrade-openssh-clients-debuginfocentos-upgrade-openssh-debuginfocentos-upgrade-openssh-debugsourcecentos-upgrade-openssh-keycatcentos-upgrade-openssh-keycat-debuginfocentos-upgrade-openssh-servercentos-upgrade-openssh-server-debuginfocentos-upgrade-openssh-sk-dummy-debuginfocentos-upgrade-pam_ssh_agent_authcentos-upgrade-pam_ssh_agent_auth-debuginfo
References
Rapid7 Labs
2026 Global Threat Landscape Report
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