vulnerability
Red Hat: CVE-2023-25136: the functions order_hostkeyalgs() and list_hostkey_types() leads to double-free vulnerability (Multiple Advisories)
| 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 30, 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 30, 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."
Solution(s)
redhat-upgrade-opensshredhat-upgrade-openssh-askpassredhat-upgrade-openssh-askpass-debuginforedhat-upgrade-openssh-clientsredhat-upgrade-openssh-clients-debuginforedhat-upgrade-openssh-debuginforedhat-upgrade-openssh-debugsourceredhat-upgrade-openssh-keycatredhat-upgrade-openssh-keycat-debuginforedhat-upgrade-openssh-serverredhat-upgrade-openssh-server-debuginforedhat-upgrade-openssh-sk-dummy-debuginforedhat-upgrade-pam_ssh_agent_authredhat-upgrade-pam_ssh_agent_auth-debuginfo
References
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