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Home > NetDefend Live > NetDefend IPS Service
NetDefend IPS Service
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Advisory ID
48279
Name
Exploit.Remote.Code.Execution.OpenSSH.CVE-2023-25136.A
IPS Signature
Advanced IPS Signature
IPS Group
IPS / SSH / OPENSSH
Issued
Oct 13, 2023
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."
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Jul 05, 2025