OpenSSH remote DoS in Universal Robots CB 3.1

by vmayoral 4 years ago

macOS ◆ xterm-256color ◆ zsh 2248 views

We found that the Universal Robots Controllers’ file system based in Debian is subject to CVE-2016-6210 which allows attackers with networking connection to the robot to cause a Denial of Service (DoS). The auth_password function in auth-passwd.c in sshd in OpenSSH before 7.3 does not limit password lengths for password authentication, which allows remote attackers to cause a denial of service (crypt CPU consumption) via a long string.

Affects:

Universal Robots CB3.1, firmware version 3.12.1
Universal Robots CB3.1, firmware version 3.12
Universal Robots CB3.1, firmware version 3.11
Universal Robots CB3.1, firmware version 3.10

More by vmayoral

ROBOTCORE™ Cloud demonstrating a simple ROS 2 pub/sub example with instances in AWS 04:04

by vmayoral 2 years ago

Integer overflow in the get_data function, zipimport.c in Python 2.7 01:16

by vmayoral 4 years ago

KRS 1.0 review with Ubuntu 22.04 in KR260 (parts 1-5) 13:50

by vmayoral 2 years ago

colcon acceleration linux 00:33

by vmayoral 3 years ago

See all

You can download this recording in asciicast v2 format, as a .cast file.

Download

Replay in terminal

You can replay the downloaded recording in your terminal using the asciinema play command:

asciinema play 315015.cast

If you don't have asciinema CLI installed then see installation instructions.

Use with stand-alone player on your website

Download asciinema player from the releases page (you only need .js and .css file), then use it like this:

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/315015.cast',
      document.getElementById('player'),
      { cols: 198, rows: 55 }
    );
  </script>
</body>
</html>

See asciinema player quick-start guide for full usage instructions.

While this site doesn't provide GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed, generate a GIF with the following command:

agg https://asciinema.org/a/315015 demo.gif

Or, if you already downloaded the recording file:

agg demo.cast demo.gif

Check agg --help for all available options. You can change font family and size, select color theme, adjust speed and more.

See agg manual for full usage instructions.