AIX OpenSSH Advisory : openssh_advisory2.asc
Medium Nessus Plugin ID 73558
SynopsisThe remote AIX host is running a vulnerable version of OpenSSH.
DescriptionThe version of OpenSSH running on the remote host is affected by a denial of service vulnerability. The default configuration of OpenSSH through 6.1 enforces a fixed time limit between establishing a TCP connection and completing a login, which makes it easier for remote attackers to cause a denial of service (connection-slot exhaustion) by periodically making many new TCP connections.
SolutionA fix is available, and it can be downloaded from the AIX website.
To extract the fixes from the tar file:
zcat OpenSSH_126.96.36.19902.tar.Z | tar xvf -
IMPORTANT: If possible, it is recommended that a mksysb backup of the system be created. Verify it is both bootable and readable before proceeding.
To preview the fix installation:
installp -apYd . OpenSSH_188.8.131.5202
To install the fix package:
installp -aXYd . OpenSSH_184.108.40.20602