Unquoted Windows search path vulnerability in multiple SSH Tectia products, including Client/Server/Connector 5.0.0 and 5.0.1 and Client/Server before 4.4.5, and Manager 2.12 and earlier, when running on Windows, might allow local users to gain privileges via a malicious program file under "Program Files" or its subdirectories.

util.c in rssh 2.3.0 in Debian GNU/Linux does not use braces to make a block, which causes a check for CVS to always succeed and allows rsync and rdist to bypass intended access restrictions in rssh.conf.

Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30.

rssh 2.0.0 through 2.2.3 allows local users to bypass access restrictions and gain root privileges by using the rssh_chroot_helper command to chroot to an external directory.

SSH Tectia Server 5.0.0 (A, F, and T), when allowing host-based authentication only, allows users to log in with the wrong credentials.

Buffer overflow in Dropbear server before 0.47 allows authenticated users to execute arbitrary code via unspecified inputs that cause insufficient memory to be allocated due to an incorrect expression that does not enforce the proper order of operations.

SSH Tectia Server 4.3.1 and earlier, and SSH Secure Shell for Windows Servers, uses insecure permissions when generating the Secure Shell host identification key, which allows local users to access the key and spoof the server.

rssh 2.2.2 and earlier does not properly restrict programs that can be run, which could allow remote authenticated users to bypass intended access restrictions and execute arbitrary programs via (1) rdist -P, (2) rsync, or (3) scp -S.

The DSS verification code in Dropbear SSH Server before 0.43 frees uninitialized variables, which might allow remote attackers to gain access.

rssh 2.0 through 2.1.x expands command line arguments before entering a chroot jail, which allows remote authenticated users to determine the existence of files in a directory outside the jail.