OpenSSH Vulnerability: CVE-2023-25136

OpenSSH Vulnerability: CVE-2023-25136

Severity

8

CVSS

(AV:N/AC:M/Au:N/C:N/I:P/A:C)

Published

02/03/2023

Created

02/14/2023

Added

02/13/2023

Modified

01/28/2025

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."

Solution(s)

• openbsd-openssh-upgrade-latest

References

• https://attackerkb.com/topics/cve-2023-25136
• CVE - 2023-25136