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Ubuntu: LXD Security, ROS EOL and More

Submitted by Roy Schestowitz on Tuesday 29th of October 2019 01:46:13 AM Filed under
Ubuntu
  • Testing CVE-2019-11043 (php-fpm security vulnerability) with LXD system containers

    CVE-2019-11043 is a buffer overflow in php-fpm that under certain conditions, can lead to remote execution. There is an exploit at PHuiP-FPizdaM that targets certain nginx and php-fpm configurations. On their page, the describe how to use Docker to test this exploit. In this post, we use LXD to test the exploit and verify whether it actually works.

    Note that php-fpm is vulnerable when nginx is configured to handle php-fpm by a specific way. Apparently, the configuration instructions for Nextcloud suggest to use this bad way. In this post, we try to achieve this bad configuration without installing Nextcloud but rather using what is minimally required for the demonstration.

    In the following we create two system containers, vulnerable and hacker. In the first container, we setup nginx and php-fpm (latest version, buffer overflow still present) and configure as required at the exploit page. In the other container, we run the exploit code, targeting the first container.

  • The Fridge: Ubuntu Weekly Newsletter Issue 602

    Welcome to the Ubuntu Weekly Newsletter, Issue 602 for the week of October 20 – 26, 2019.

  • The masters speak: Forward-thinking Ubuntu users gather to share their experiences

    Comprised primarily of engineers and developers, the group convened at the NVIDIA campus in Santa Clara, CA, on October 8th to listen to speakers from Netflix, Adobe, Roblox, NVIDIA, and Canonical. The event was a unique opportunity for attendees to ask questions, share their own experiences, and network, while hearing about specific use cases from the keynote speakers.

    The gathering took place as Ubuntu approaches a milestone - the 15th anniversary of the first Ubuntu release this month. Stephan Fabel, Director of Product at Canonical, said Ubuntu has become one of the most powerful and flexible platforms available today for a wide range of modern applications in the data center and cloud, including artificial intelligence (AI) and machine learning (ML), robotics, the Internet of Things, edge computing and more.

  • PSA for ROS users: Some things to know as Python 2 approaches EOL

    We recently got an interesting question from a customer, and I think the answer might be helpful to a wider audience. Python 2 will reach end of life in two months. This shouldn’t be news to anyone who hasn’t been living under a rock, and plans are in place to use Python 3 in Noetic (whereas ROS 2 has always used Python 3). However, the question from our customer was this: What does that mean for existing ROS 1 distributions (Kinetic and Melodic)? They are still using (and will continue to use) Python 2.

    The answer really depends on where you’re getting Python 2. Tl;dr: If you’re using Ubuntu Xenial (16.04) or Bionic (18.04), please know that Python 2 from the Ubuntu repositories will continue to be supported for the lifetime of the Ubuntu release, regardless of Python 2’s upstream support status.

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today's howtos

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