Follow the instructions to update ssh on the latest version.
The process requires patching the current source, which is unfortunately not written anywhere in the open-ssh website.

Package Information

-Download (HTTP): http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-7.5p1.tar.gz

Download MD5 sum: 652fdc7d8392f112bef11cacf7e69e23

Download size: 1.4 MB

Estimated disk space required: 37 MB (add 11 MB for tests)

Estimated build time: 0.4 SBU (running the tests takes 10+ minutes, irrespective of processor speed)

Additional Downloads

Required patch:
http://www.linuxfromscratch.org/patches/blfs/svn/openssh-7.5p1-openssl-1.1.0-1.patch

wget http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/openssh-7.5p1.tar.gz

wget  http://www.linuxfromscratch.org/patches/blfs/svn/openssh-7.5p1-openssl-1.1.0-1.patch

tar -xzvf openssh-7.5p1.tar.gz
cd openssh-7.5p1

patch -Np1 -i ../openssh-7.5p1-openssl-1.1.0-1.patch &&

./configure --prefix=/usr                     \
            --sysconfdir=/etc/ssh             \
            --with-md5-passwords              \
            --with-privsep-path=/var/lib/sshd &&
make && make install