How to fix CVE-2016-2107 on an Nginx server in Centos 7

CVE-2016-2107_Centos_7_fix.sh

#!/bin/bash
# You need this for your OpenSSL tests to pass later
yum install perl-core

# Grab the source for OpenSSL 1.1, which has the patch for CVE-2016-2107
cd /usr/local/src
wget https://www.openssl.org/source/openssl-1.1.0b.tar.gz
tar -zxf openssl-1.1.0b.tar.gz 
cd openssl-1.1.0b

# Configure for your system and build
./config
make

# Run the tests to make sure there aren't any show-stoppers
make test
make install

# These steps are super questionable and I welcome any better suggestions
# Essentially I'm overriding the system's OpenSSL
mv /usr/bin/openssl /root/
ln -s /usr/local/ssl/bin/openssl /usr/bin/openssl
rm /bin/openssl
ln -s /usr/local/bin/openssl /bin/openssl

# Restart Nginx so that it's aware of the changes (a reload is NOT enough!)
systemctl restart nginx

For those that manually build Nginx with a specific version of OpenSSL, this may help:

#openSSL

cd /usr/local/src
wget https://www.openssl.org/source/openssl-1.1.0b.tar.gz
tar -zxf openssl-1.1.0b.tar.gz
cd openssl-1.1.0b

Configure for your system and build

./config
make

Run the tests to make sure there aren't any show-stoppers

make test
make install

mv /usr/bin/openssl /root/
ln -s /usr/local/ssl/bin/openssl /usr/bin/openssl
rm /bin/openssl
ln -s /usr/local/bin/openssl /bin/openssl

cd /root/build
sudo wget http://nginx.org/download/nginx-1.13.1.tar.gz
sudo tar xzf nginx-1.13.1.tar.gz
cd nginx-1.13.1
sudo git clone git://github.com/arut/nginx-rtmp-module.git
sudo yum install git gcc make pcre-devel openssl-devel
wget https://www.openssl.org/source/openssl-1.1.0f.tar.gz && tar xzvf openssl-1.1.0f.tar.gz
wget https://www.openssl.org/source/openssl-1.1.0b.tar.gz
tar -zxf openssl-1.1.0b.tar.gz
./configure --prefix=/usr/local/nginx --sbin-path=/usr/local/nginx/ --modules-path=/usr/lib/nginx/modules --conf-path=/usr/local/nginx/conf/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/run/nginx.pid --lock-path=/var/lock/nginx.lock --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-openssl=./openssl-1.1.0b --with-openssl-opt=enable-ec_nistp_64_gcc_128 --with-openssl-opt=no-nextprotoneg --with-openssl-opt=no-weak-ssl-ciphers --with-openssl-opt=no-ssl3 --with-pcre-jit --with-zlib=./zlib-1.2.11 --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_slice_module --with-http_ssl_module --with-http_sub_module --with-http_stub_status_module --with-http_v2_module --with-http_secure_link_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-http_realip_module --with-http_stub_status_module --add-module=./nginx-rtmp-module

make
make install