Feb. 3, 2023, 6:15 a.m. |

National Vulnerability Database web.nvd.nist.gov

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 triggered by an unauthenticated attacker in the default configuration. One third-party report states "remote code execution is theoretically possible."

code code execution configuration cve cve-2023-25136 default double-free free handling openssh options party remote code remote code execution report server states third third-party vulnerability

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