Previous versions had issues where one SSH session using compression could corrupt data in another simultaneous session.
Attackers use scanning tools to identify open SSH ports (default port 22) and pull the version banner. A standard response might leak the exact software and version: SSH-2.0-Bitvise_SSH_Server_8.48 Execution of Denial of Service (DoS) bitvise winsshd 8.48 exploit
: Version 8.48 does not support "strict key exchange." Users must disable ChaCha20-Poly1305 Encrypt-then-MAC (-etm) algorithms to mitigate the risk. Insecure Installation Permissions Previous versions had issues where one SSH session
SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:bitvise:winsshd"; if(description) { script_oid("1.3.6.1.4.1.25623.1.0.813387") Vulners.com Upgrade to version 9
Below is an essay-style overview of the security landscape surrounding Bitvise SSH Server (formerly WinSSHD) version 8.48. Security Analysis of Bitvise SSH Server 8.48
Bitvise utilizes a architecture where the process handling untrusted network data runs with minimal privileges. Even if an attacker successfully executes code via an exploit, they find themselves trapped in a low-privileged sandbox, unable to compromise the wider operating system without finding a second, separate local privilege escalation vulnerability.
Upgrade to version 9.32 or newer , which supports "strict key exchange" to mitigate this protocol-level flaw. Historical and Library Risks
