- wlug - list.wlug.org.nz

Xfce 4.20 Desktop Environment Released with Experimental Wayland Support
by Peter Reutemann 17 Dec '24

17 Dec '24

'Two years after the release of Xfce 4.18, Xfce 4.20 is here as another major update to this light and fast desktop environment for GNU/Linux distributions. Xfce 4.20 is packed with lots of new features and improvements like experimental support for Wayland with support for the Labwc and Wayfire compositors, improved support for HiDPI displays, and libxfce4windowing as a new abstraction library to present windowing concepts in a windowing-system-independent manner. Wayland sessions of Xfce can be started with the startxfce4 --wayland command. However, you should keep in mind that several Xfce components don’t run at all on Wayland, including the Xfwm4 window manager, Xfdashboard, Xfce4-screensaver, Xfce4-windowck-plugin, and Xfce4-xkb-plugin. “So far Xfce does not feature a compositor which supports Wayland. If you want to run Xfce in Wayland, Labwc and Wayfire will give you the best results,” said the Xfce development team. “Plans are underway to add Wayland support to Xfwm4 while preserving its existing X11 functionality. However, such a restructurization will be a major effort and we cannot tell yet when/if it will be done, so please don’t hold your breath waiting for it.”' -- source: https://9to5linux.com/xfce-4-20-desktop-environment-released-with-experimen… Cheers, Peter

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How to Share Your Linux Terminal Over the Web Using Ttyd
by Peter Reutemann 16 Dec '24

16 Dec '24

Looks like an interesting project: 'Ttyd is a simple tool that allows you to share a Linux terminal over a web browser. It’s cross-platform and uses the libuv and WebGL2 Javascript APIs for performance and real-time connection between the browser and Linux terminal. The SSL support is offered by OpenSSL. It supports multiple clients at once, allowing multiple clients to connect to the same Linux terminal from different browsers (or tabs). No additional package is required on the client-side, only the correct web address is needed. You can use this tool for remote system administration, troubleshooting, assisting a friend with any specific task, debugging or recovering a process, and much more.' -- source: https://linuxtldr.com/installing-ttyd/ Cheers, Peter

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Let's Encrypt Announces New-Certificate-Every-6-Days Offering
by Peter Reutemann 16 Dec '24

16 Dec '24

'The non-profit, free certificate authority Let's Encrypt shared some news from their executive director as they approach their 10th anniversary in 2025: Internally things have changed dramatically from what they looked like ten years ago, but outwardly our service hasn't changed much since launch. That's because the vision we had for how best to do our job remains as powerful today as it ever was: free 90-day TLS certificates via an automated API. Pretty much as many as you need. More than 500,000,000 websites benefit from this offering today, and the vast majority of the web is encrypted. Our longstanding offering won't fundamentally change next year, but we are going to introduce a new offering that's a big shift from anything we've done before — short-lived certificates. Specifically, certificates with a lifetime of six days. This is a big upgrade for the security of the TLS ecosystem because it minimizes exposure time during a key compromise event. Because we've done so much to encourage automation over the past decade, most of our subscribers aren't going to have to do much in order to switch to shorter lived certificates. We, on the other hand, are going to have to think about the possibility that we will need to issue 20x as many certificates as we do now. It's not inconceivable that at some point in our next decade we may need to be prepared to issue 100,000,000 certificates per day. That sounds sort of nuts to me today, but issuing 5,000,000 certificates per day would have sounded crazy to me ten years ago... It was hard to build Let's Encrypt. It was difficult to scale it to serve half a billion websites... Charitable contributions from people like you and organizations around the world make this stuff possible. Since 2015, tens of thousands of people have donated. They've made a case for corporate sponsorship, given through their Donor-Advised Funds, or set up recurring donations, sometimes to give $3 a month. That's all added up to millions of dollars that we've used to change the Internet for nearly everyone using it.' -- source: https://it.slashdot.org/story/24/12/15/0059216 Cheers, Peter

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Banan OS: A Fully Functional Unix-like OS Built From Scratch In C++
by Peter Reutemann 16 Dec '24

16 Dec '24

'A student has built an entire operating system from scratch in C++. Yes, you read that right! Meet Banan OS, a hobbyist operating system for x86_64 and i686 architectures, written entirely in C++ by an university student Oskari Alaranta. The project is fully independent, with all code written exclusively by Alaranta, except for any ported software.' -- source: https://ostechnix.com/banan-os-a-fully-functional-linux-os-built-from-scrat… Cheers, Peter

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Raspberry Pi 500 Brings All-in-One PC Power to Your Desk for Just $90
by Peter Reutemann 13 Dec '24

13 Dec '24

'Just in time for the holiday season, Raspberry Pi has launched two highly anticipated products that promise to revolutionize compact computing. Enter the Raspberry Pi 500 and the official Raspberry Pi Monitor, designed to provide a sleek and complete desktop experience at an exceptionally affordable price. Raspberry Pi’s mission has always been clear: to provide affordable, programmable personal computers to people worldwide. Over the years, this vision has expanded as the company has grown into one of the leading manufacturers of industrial and embedded computers. For example, products like the $15 Raspberry Pi Zero 2 W and the flagship Raspberry Pi 5 have demonstrated the company’s ability to cater to both cost-conscious and performance-driven audiences. Let’s also not forget that just two weeks ago, the company announced another exciting product, the Raspberry Pi Compute Module 5, specifically designed for embedded applications. And now, building on the success of the Raspberry Pi 400, the newly launched Raspberry Pi 500 takes compact computing to the next level. Combining the high-performance Raspberry Pi 5 platform with an all-in-one form factor, this device offers exceptional power and versatility: - Processor: 2.4GHz quad-core 64-bit Arm Cortex-A76 - Memory: 8GB LPDDR4X-4267 SDRAM - Graphics: VideoCore VII GPU, supporting OpenGL ES 3.1 and Vulkan 1.3 - Display Outputs: Dual 4Kp60 HDMI - Connectivity: Dual-band 802.11ac Wi-Fi, Bluetooth 5.0, and Gigabit Ethernet - Ports: 2 USB 3.0, 1 USB 2.0 - GPIO Connector: Horizontal 40-pin Raspberry Pi GPIO' -- source: https://linuxiac.com/raspberry-pi-500-announced/ Cheers, Peter

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AMD’s trusted execution environment blown wide open by new BadRAM attack
by Peter Reutemann 11 Dec '24

11 Dec '24

'One of the oldest maxims in hacking is that once an attacker has physical access to a device, it’s game over for its security. The basis is sound. It doesn’t matter how locked down a phone, computer, or other machine is; if someone intent on hacking it gains the ability to physically manipulate it, the chances of success are all but guaranteed. In the age of cloud computing, this widely accepted principle is no longer universally true. Some of the world’s most sensitive information—health records, financial account information, sealed legal documents, and the like—now often resides on servers that receive day-to-day maintenance from unknown administrators working in cloud centers thousands of miles from the companies responsible for safeguarding it. In response, chipmakers have begun baking protections into their silicon to provide assurances that even if a server has been physically tampered with or infected with malware, sensitive data funneled through virtual machines can’t be accessed without an encryption key that’s known only to the VM administrator. Under this scenario, admins inside the cloud provider, law enforcement agencies with a court warrant, and hackers who manage to compromise the server are out of luck. On Tuesday, an international team of researchers unveiled BadRAM, a proof-of-concept attack that completely undermines security assurances that chipmaker AMD makes to users of one of its most expensive and well-fortified microprocessor product lines. Starting with the AMD Epyc 7003 processor, a feature known as SEV-SNP—short for Secure Encrypted Virtualization and Secure Nested Paging—has provided the cryptographic means for certifying that a VM hasn’t been compromised by any sort of backdoor installed by someone with access to the physical machine running it. If a VM has been backdoored, the cryptographic attestation will fail and immediately alert the VM admin of the compromise. Or at least that’s how SEV-SNP is designed to work. BadRAM is an attack that a server admin can carry out in minutes, using either about $10 of hardware, or in some cases, software only, to cause DDR4 or DDR5 memory modules to misreport during bootup the amount of memory capacity they have. From then on, SEV-SNP will be permanently made to suppress the cryptographic hash attesting its integrity even when the VM has been badly compromised. “BadRAM completely undermines trust in AMD's latest Secure Encrypted Virtualization (SEV-SNP) technology, which is widely deployed by major cloud providers, including Amazon AWS, Google Cloud, and Microsoft Azure,” members of the research team wrote in an email. “BadRAM for the first time studies the security risks of bad RAM—rogue memory modules that deliberately provide false information to the processor during startup. We show how BadRAM attackers can fake critical remote attestation reports and insert undetectable backdoors into _any_ SEV-protected VM.”' -- source: https://arstechnica.com/information-technology/2024/12/new-badram-attack-ne… Cheers, Peter

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Linux Mint Dethrones MX Linux As the Most Popular Distro On DistroWatch
by Peter Reutemann 11 Dec '24

11 Dec '24

'Linux Mint has reclaimed its position as the top-ranked Linux distribution on DistroWatch, dethroning MX Linux. The latest page hit rankings, which reflect the popularity of distributions among DistroWatch users, place Linux Mint in first place with 2,412 hits per day. MX Linux, previously the reigning champ, now sits in second with 2,280 hits.' -- source: https://linux.slashdot.org/story/24/12/10/1754230 Cheers, Peter

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Linux Kernel 6.12 Confirmed As LTS, Will Be Supported For 'Multiple Years'
by Peter Reutemann 10 Dec '24

10 Dec '24

'Renowned Linux kernel developer Greg Kroah-Hartman announced Thursday that the Linux 6.12 kernel series has been officially marked as LTS (Long Term Support) on the kernel.org website with a predicted life expectancy of at least two years. Linux kernel 6.12 was released on November 17th, 2024, and introduces new features like real-time "PREEMPT_RT" support, a new scheduler called sched_ext, and DRM panic messages as QR codes, as well as numerous new and updated drivers for better hardware support... Linux kernel 6.12 joins the many other long-term support kernel branches, namely Linux 6.6 LTS, Linux 6.1 LTS, Linux 5.15 LTS, Linux 5.10 LTS, and Linux 5.4 LTS. Apart from the latter, the rest of them, including Linux kernel 6.12, will be officially supported until the end of December 2026. Hopefully, Linux kernel 6.12 will be supported for more than two years as the kernel maintainers usually aim for four years of support for a new LTS kernel, especially if there's demand from hardware manufacturers and other companies that aim to use a long-term supported kernel in their devices. ' -- source: https://linux.slashdot.org/story/24/12/09/0125219 Cheers, Peter

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migration of wlug list
by Peter Reutemann 06 Dec '24

06 Dec '24

Hi everyone Thanks to Elliot Hathaway from TechnologyWise working hard behind the scenes, we now have an alternative mailman instance to keep our wlug mailing list going forward. As a reminder, the university server will be shut down next week Friday, December 13th. Thanks to Daniel Lawson, a former WLUG president, and now owner of the wlug.org.nz domain, the list will be a sub-domain under the wlug.org.nz domain. What is next? On Monday, December 9th, we will do a final migration of members and archives from the current mailman instance to the new one. Once that is done, you will receive an invitation to subscribe to the new list. If you want to continue using the list, then please accept it. This might also be a good opportunity to revisit your password and replace it with a strong one (passwords won't be migrated!). I will then make a final post on the old mailing list that the migration has finished with a link to the new one (just in case your invitation ended up in spam). After that, the old mailing list will be disabled, i.e., members removed and no longer accepting new member sign-ups. Have a good weekend! Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, Hamilton, NZ Mobile +64 22 190 2375 https://profiles.waikato.ac.nz/peter.reutemann http://www.data-mining.co.nz/

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Linux Making Inroads In PC Gaming
by Lawrence D'Oliveiro 06 Dec '24

06 Dec '24

You’d think that PC gaming was the last nearly unassailable bastion in the Windows world, where potential users who were willing to consider Linux would be few and far between. Reinforcing this idea, Valve tried to bring out its Linux-based “SteamOS” a few years ago, and failed. But then, the Steam Deck pioneered a new market segment, namely PC gaming in a handheld form factor. And here, Valve has found success with Linux -- to the point where the Windows-based competitors look overpriced and underperforming -- in short, just plain clunky. This in spite of the natural advantage of Windows in offering better compatibility with games specifically written for Windows. Now we hear that Valve is having another try at offering SteamOS for third-party hardware <https://arstechnica.com/gaming/2024/12/the-return-of-steam-machines-valve-r…>. The article suggests, and I strongly suspect it is so, that this is to allow those competitors to the Steam Deck to offer a better OS than Windows on their products. Some of them have already made noises to this effect. The Steam Deck is already so far ahead of its Windows-based competitors, that offering serious competition to the Steam Deck will only leave Windows further behind in the lurch -- further cementing the dominance of Linux in this new market segment.

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testing the new list
by Peter Reutemann 05 Dec '24

05 Dec '24

blah blah blah -- Peter Reutemann Dept. of Computer Science University of Waikato, Hamilton, NZ Mobile +64 22 190 2375 https://profiles.waikato.ac.nz/peter.reutemann http://www.data-mining.co.nz/

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Trying Out Bluesky
by Lawrence D'Oliveiro 04 Dec '24

04 Dec '24

Just signed up at Bluesky <https://bsky.app/> earlier this morning. Did some searches for stuff on Python, Blender, Linux, NZ etc. Already got into reasonably civil discussions with a bunch of people on related topics, and got some likes on my comments. Feels a lot like Twitter from, say, a decade ago. No doubt there are topics with much greater traffic than those I’ve mentioned. Possibly even some loonies and other questionable content, if you look hard enough. This seems to be a Fediverse-type system, connected via open-source protocols/software. I think there are people running their own servers, it’s not all on bluesky.social.

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OpenStreetMap Migrates To Debian 12 For Enhanced Performance
by Peter Reutemann 04 Dec '24

04 Dec '24

'OpenStreetMap (OSM), the collaborative project to create a free and open map of the world, has migrated its servers to Debian 12 (Bookworm) after 18 years on Ubuntu. This transition brings with it a number of benefits, including improved speed and closer ties with the Debian community. Why the Switch? The decision to migrate was driven by a number of factors, with performance being a key consideration. OSM's infrastructure relies heavily on physical hardware, and the team encountered significant I/O performance issues with certain kernel versions on systems using NVMe storage. Debian 12 offered a solution by allowing the installation of backported kernels, effectively resolving these performance bottlenecks. Another motivating factor was the desire to align more closely with the maintainers of the software packages that OSM relies on. Debian boasts a strong reputation for package maintenance, and many Debian maintainers are deeply invested in the software they support, ensuring prompt attention to critical bugs. A Smooth Transition The migration process was facilitated by OSM's infrastructure management practices. Their server setup is largely code-driven, and rigorous testing is performed using tools like Test Kitchen and Inspec. By adding Debian as a test target platform, the team was able to identify and address any compatibility issues early on. The required code changes were relatively minor, primarily involving adjustments to package names and configuration filenames. The transition involved the following key steps: - Frontend Server Migration: OSM successfully migrated its frontend servers to Debian 12, resulting in a Ruby version upgrade from 3.0 to 3.1. This upgrade allowed for a corresponding upgrade to the Ruby on Rails framework used for the www.openstreetmap.org website. - Networking Management Shift: OSM transitioned from using netplan, the default network management tool in Ubuntu, to systemd-networkd, Debian's preferred tool. This change streamlined network management across both Ubuntu and Debian systems, ensuring consistency. - Custom Package Management: OSM adopted aptly to manage their own Debian package repository. This shift from Ubuntu's Personal Package Archives (PPA) was driven by the need to manage pre-release or custom patches of OSM software. A Shared Community The move to Debian also reflects the strong overlap between the OSM and Debian communities. Many OSM contributors are also active within the Debian ecosystem, fostering a shared understanding and collaborative spirit.' -- source: https://ostechnix.com/openstreetmap-migrates-to-debian-12-for-enhanced-perf… Cheers, Peter

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Raspberry Pi Compute Module 5 Launches as a Modular Version of Raspberry Pi 5
by Peter Reutemann 02 Dec '24

02 Dec '24

'The Raspberry Pi Foundation announced today the general availability of Raspberry Pi Compute Module 5 as the fifth update to their Raspberry Pi CM (Compute Module) series. Designed as a modular version of the Raspberry Pi 5 single-board computer, the Raspberry Pi Compute Module 5 is powered by a 2.4GHz Quad-Core 64-bit ARM Cortex-A76 processor and it’s available with 2GB, 4GB, or 8GB of LPDDR4X-4267 SDRAM memory, as well as with 16GB, 32GB, or 64GB of MLC eMMC storage. Raspberry Pi CM 5 also comes with a powerful VideoCore VII graphics card supporting OpenGL ES 3.1 and Vulkan 1.3 standards, a 4Kp60 HEVC decoder, dual 4Kp60 HDMI display output, 2 × 4-lane MIPI camera/display transceivers, and 30 GPIOs supporting 1.8V or 3.3V operation. Connectivity-wise, the Raspberry Pi Compute Module 5 supports a PCIe 2.0 x1 interface for fast peripherals, two USB 3.0 interfaces for supporting simultaneous 5Gbps operation, Gigabit Ethernet with IEEE 1588 support, and optional dual-band 802.11ac Wi-Fi and Bluetooth 5.0. The Raspberry Pi CM5 IO board features a standard 40-pin GPIO connector, two full-size HDMI 2.0 connectors, two 4-lane MIPI DSI/CSI-2 FPC connectors, two USB 3.0 connectors, a Gigabit Ethernet jack with PoE+ support, an M.2 M-key PCIe socket, a microSD card socket, an RTC battery socket, and a 4-pin fan connector. Despite its small design, Raspberry Pi CM 5 also supports various peripherals, including UART, SPI, I2C, I2S, SDIO, and PWM. On top of that, Compute Module 5 is mechanically compatible with its predecessor, Raspberry Pi Compute Module 4, but provides additional stability with four M2.5 mounting holes at the corners of the board.' -- source: https://9to5linux.com/raspberry-pi-compute-module-5-launches-as-a-modular-v… Cheers, Peter

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Code found online exploits LogoFAIL to install Bootkitty Linux backdoor
by Peter Reutemann 02 Dec '24

02 Dec '24

'Researchers have discovered malicious code circulating in the wild that hijacks the earliest stage boot process of Linux devices by exploiting a year-old firmware vulnerability when it remains unpatched on affected models. The critical vulnerability is one of a constellation of exploitable flaws discovered last year and given the name LogoFAIL. These exploits are able to override an industry-standard defense known as Secure Boot and execute malicious firmware early in the boot process. Until now, there were no public indications that LogoFAIL exploits were circulating in the wild. The discovery of code downloaded from an Internet-connected web server changes all that. While there are no indications the public exploit is actively being used, it is reliable and polished enough to be production-ready and could pose a threat in the real world in the coming weeks or months. Both the LogoFAIL vulnerabilities and the exploit found on-line were discovered by Binarly, a firm that helps customers identify and secure vulnerable firmware.' -- source: https://arstechnica.com/security/2024/11/code-found-online-exploits-logofai… Cheers, Peter

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GIMP 3.0 - a Milestone For Open-Source Image Editing
by Peter Reutemann 30 Nov '24

30 Nov '24

'The long-awaited release of the GNU Image Manipulation Program (GIMP) 3.0 is on the way, marking the first major update since version 2.10 was released in April 2018. It now features a GTK 3 user interface and GIMP 3.0 introduces significant changes to the core platform and plugins. This release also brings performance and usability improvements, as well as more compatibility with Wayland and complex input sources. GIMP 3.0 is the first release to use GTK 3, a more modern foundation than the GTK 2 base of prior releases. GTK 4 has been available for a few years now, and is on the project's radar, but the plan was always to finish the GTK 3 work first. Moving to GTK 3 brings initial Wayland compatibility and HiDPI scaling. In addition, this allows for GIMP users to take advantage of multi-touch input, bringing pinch-to-zoom gestures to the program, and offering a better experience when working with complex peripherals, such as advanced drawing tablets. These features were not previously possible due to the limitations of GTK 2. A secondary result of the transition to GTK 3 is a refreshed user interface (UI), now with support for CSS themes included. In this release, four themes are available by default, including light, dark, and gray themes, along with a high-contrast theme for users with visual impairments. Additionally, this release has transitioned to using GTK's header bar component, typically used to combine an application's toolbar and title bar into one unit. To maintain familiarity with previous releases, however, GIMP 3.0 still supports the traditional menu interface.' -- source: https://tech.slashdot.org/story/24/11/29/134239/ Cheers, Peter

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Both KDE and GNOME To Offer Official Distros
by Peter Reutemann 30 Nov '24

30 Nov '24

'KDE and GNOME have decided that because they're not big and complicated enough already, they might work better if they have their own custom distributions underneath. What's the worst that could happen? A talk from this year's KDE conference, Akademy 2024, looks like it's going to become real. The talk, by KDE developer Harald Sitter, was entitled An Operating System of Our Own, and the idea sounds simple enough: Sitter proposed an official KDE Linux distribution. Now the proposal is gathering steam and a plan is coming together for an official KDE Linux -- codenamed "Project Banana."' -- source: https://tech.slashdot.org/story/24/11/29/2055220 Cheers, Peter

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file browser
by Peter Reutemann 26 Nov '24

26 Nov '24

Hi there Today, I decided to finally switch my default file browser to krusader: https://krusader.org/ For a number of years, I've been using double-commander: https://doublecmd.sourceforge.io/ Mostly, I was quite happy with double-commander, as it had my preferred two-panel approach for managing files (I frequently copy files between various directories around for testing models etc). The two-panel approach was something I came to appreciate back in the DOS days when using the Norton Commander. With Double-commander I could also have an arbitrary number of tabs within a panel. The function buttons at the bottom (rename/copy/view/terminal/etc) were also quite handy when using the mouse. And, very importantly, Double-commander is available for Windows as well. However, remote access via sftp was quite slow (viewing and copying files) and that's when I had to fall back on caja, as it had a much higher throughput. Compared to caja, krusader is much faster when listing remote files. Waiting around for caja to refresh a few thousand files was taking way too long (sometimes up to 30 seconds). That's what gave me the final push to make the switch (on my development machine). Double-commander will still be my go-to tool for Windows machines. Anyway, what is your preferred file browser? Cheers, Peter

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g: An Elegant Alternative for the ls Command in Linux
by Peter Reutemann 25 Nov '24

25 Nov '24

Hi everyone Just came across this post: '“g” is a free and open-source cross-platform alternative to the ls command, offering more advanced features than any other alternative, such as what “exa” can provide. The developer named this tool “g” because it’s written in Go, and “g” is simply easy to remember. It offers various ways to customize output, multiple ways to layout the output, integrated support for Git, advanced sorting mechanisms, fuzzy path matching, and hyperlink support.' -- source: https://linuxtldr.com/g-alternative-of-the-ls-command/ Looks like an interesting alternative. :-) Cheers, Peter

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Red Hat is Becoming an Official Microsoft 'Windows Subsystem for Linux' Distro
by Peter Reutemann 24 Nov '24

24 Nov '24

'You can use any Linux distribution inside of the Windows Subsystem for Linux" Microsoft recently reminded Windows users, "even if it is not available in the Microsoft Store, by importing it with a tar file." But being an official distro "makes it easier for Windows Subsystem for Linux users to install and discover it with actions like wsl --list --online and wsl --install," Microsoft pointed out this week. And "We're excited to announce that Red Hat will soon be delivering a Red Hat Enterprise Linux WSL distro image in the coming months..." Thank you to the Red Hat team as their feedback has been invaluable as we built out this new architecture, and we're looking forwards to the release...! Ron Pacheco, senior director, Red Hat Enterprise Linux Ecosystem, Red Hat says: "Developers have their preferred platforms for developing applications for multiple operating systems, and WSL is an important platform for many of them. Red Hat is committed to driving greater choice and flexibility for developers, which is why we're working closely with the Microsoft team to bring Red Hat Enterprise Linux, the largest commercially available open source Linux distribution, to all WSL users." Read Pacheco's own blog post here. But in addition Microsoft is also releasing "a new way to make WSL distros," they announced this week, "with a new architecture that backs how WSL distros are packaged and installed." Up until now, you could make a WSL distro by either creating an appx package and distributing it via the Microsoft Store, or by importing a .tar file with wsl -import. We wanted to improve this by making it possible to create a WSL distro without needing to write Windows code, and for users to more easily install their distros from a file or network share which is common in enterprise scenarios... With the tar based architecture, you can start with the same .tar file (which can be an exported Linux container!) and just edit it to add details to make it a WSL distro... These options will describe key distro attributes, like the name of the distro, its icon in Windows, and its out of box experience (OOBE) which is what happens when you run WSL for the first time. You'll notice that the oobe_command option points to a file which is a Linux executable, meaning you can set up your full experience just in Linux if you wish. ' -- source: https://tech.slashdot.org/story/24/11/23/0251245 Cheers, Peter

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Ubuntu Linux Impacted By Decade-Old 'needrestart' Flaw That Gives Root
by Peter Reutemann 21 Nov '24

21 Nov '24

'Five local privilege escalation (LPE) vulnerabilities in the Linux utility "needrestart" -- widely used on Ubuntu to manage service updates -- allow attackers with local access to escalate privileges to root. The flaws were discovered by Qualys in needrestart version 0.8, and fixed in version 3.8. BleepingComputer reports: Complete information about the flaws was made available in a separate text file, but a summary can be found below: - CVE-2024-48990: Needrestart executes the Python interpreter with a PYTHONPATH environment variable extracted from running processes. If a local attacker controls this variable, they can execute arbitrary code as root during Python initialization by planting a malicious shared library. - CVE-2024-48992: The Ruby interpreter used by needrestart is vulnerable when processing an attacker-controlled RUBYLIB environment variable. This allows local attackers to execute arbitrary Ruby code as root by injecting malicious libraries into the process. - CVE-2024-48991: A race condition in needrestart allows a local attacker to replace the Python interpreter binary being validated with a malicious executable. By timing the replacement carefully, they can trick needrestart into running their code as root. - CVE-2024-10224: Perl's ScanDeps module, used by needrestart, improperly handles filenames provided by the attacker. An attacker can craft filenames resembling shell commands (e.g., command|) to execute arbitrary commands as root when the file is opened. - CVE-2024-11003: Needrestart's reliance on Perl's ScanDeps module exposes it to vulnerabilities in ScanDeps itself, where insecure use of eval() functions can lead to arbitrary code execution when processing attacker-controlled input. The report notes that attackers would need to have local access to the operation system through malware or a compromised account in order to exploit these flaws. "Apart from upgrading to version 3.8 or later, which includes patches for all the identified vulnerabilities, it is recommended to modify the needrestart.conf file to disable the interpreter scanning feature, which prevents the vulnerabilities from being exploited," adds BleepingComputer.' -- source: https://it.slashdot.org/story/24/11/21/0057206 Cheers, Peter

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Linux Kernel 6.12 Has Been Released
by Peter Reutemann 18 Nov '24

18 Nov '24

'Slashdot unixbhaskar writes: Linus has released a fresh Linux kernel for public consumption. Please give it a try and report any glitches to the maintainers for improvement. Also, please do not forget to express your appreciation to those tireless folks who did all the hard work for you. The blog OMG Ubuntu calls it "one of the most biggest kernel releases for a while," joking that it's a "really real-time kernel." The headline feature in Linux 6.12 is mainline support for PREEMPT_RT. This patch set dramatically improves the performance of real-time applications by making kernel processes pre-emptible — effectively enabled proper real-time computing... Meanwhile, Linus Torvalds himself contributes a new method for user-space address masking designed to claw back some of the performance lost due to Spectre-v1 mitigations. You might have heard that kernel devs have been working to add QR error codes to Linux's kernel panic BSOD screen (as a waterfall of error text is often cut off and not easily copied for ad-hoc debugging). Well, Linux 6.12 adds support for those during Direct Rendering Manager panics... A slew of new RISC-V CPU ISA extensions are supported in Linux 6.12; hybrid CPU scaling in the Intel P-State driver lands ahead of upcoming Intel Core Ultra 2000 chips; and AMD P-State driver improves AMD Boost and AMD Preferred Core features. More coverage from the blog 9to5Linux highlights a new scheduler called sched_ext, Clang support (including LTO) for nolibc, support for NVIDIA's virtual command queue implementation for SMMUv3, and "an updated cpuidle tool that now displays the residency value of cpuidle states for a clearer and more detailed view of idle state information when using cpuidle-info." Linux kernel 6.12 also introduces SWIG bindings for libcpupower to make it easier for developers to write scripts that use and extend the functionality of libcpupower, support for translating normalized error addresses reported by an AMD memory controller into system physical addresses using a UEFI mechanism called platform runtime mechanism (PRM), as well as simplified loading of microcode patches on AMD Zen and newer CPUs by using the family, model, and stepping encoded in the patch revision number... Moreover, Linux 6.12 adds support for running as a protected guest on Android as well as perf and support for a bunch of new interconnect PMUs. It also adds the final conversions to the new Intel VFM CPU model matching macros, rewrites the PCM buffer allocation handling and locking optimizations, and improves the USB audio driver... ' -- source: https://linux.slashdot.org/story/24/11/18/0142252 Cheers, Peter

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mailing list alternatives
by Peter Reutemann 18 Nov '24

18 Nov '24

Hi everyone Here is a list of all the potential options for having the WLUG mailing list continue in some form after the University of Waikato will shut down their mailman instance next month: 1. TechnologyWise would support us and host it at Catalyst (Wellington) Type: unspecified (since general hosting, could be mailman?) Comment: TW ran the BOP LUG that way 2. Linux Australia (https://lists.linux.org.au/mailman/listinfo) Type: mailman (open-source) Comment: not yet contacted whether they'd be open to it 3. Don Gould Type: unspecified (has FLOSS platform, so could be mailman) 4. NZOSS Type: discourse (open-source, at community.iridescent.nz) Comment: unlikely to migrate archives 5. Outlook Groups option Type: MS Outlook (proprietary) Comment: just email distribution, probably no archives In terms of WLUG list archives... I've experimented with hypermail (https://github.com/hypermail-project/hypermail) and was able to turn the 53MB mbox file containing all our posts from the last 25 years into 183MB of HTML. That way, we can at least ensure that the old content doesn't get lost completely. I also talked to Daniel Lawson, who's hosting the old WLUG website and wiki. Though he is not keen on managing mail (bit of a nightmare nowadays according to him), he'd be willing to host the HTML version of the archives. Please reply to this post with your preferred option(s) by Saturday night (e.g., "1" or "1 3 4"). On Sunday, I will then create a final tally (hopefully). Thanks again for your suggestions! Cheers, Peter

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New systemd update will bring Windows’ infamous Blue Screen of Death to Linux
by Peter Reutemann 18 Nov '24

18 Nov '24

'Windows' infamous "Blue Screen of Death" is a bit of a punchline. People have made a hobby of spotting them out in the wild, and in some circles, they remain a byword for the supposed flakiness and instability of PCs. To this day, networked PCs in macOS are represented by beige CRT monitors displaying a BSOD. But the BSOD is supposed to be a diagnostic tool, an informational screen that technicians can use to begin homing in on the problem that caused the crash in the first place; that old Windows' BSOD error codes were often so broad and vague as to be useless doesn't make the idea a bad one. Today, version 255 of the Linux systemd project honors that original intent by adding a systemd-bsod component that generates a full-screen display of some error messages when a Linux system crashes. The systemd-bsod component is currently listed as "experimental" and "subject to change." But the functionality is simple: any logged error message that reaches the LOG_EMERG level will be displayed full-screen to allow people to take a photo or write it down. Phoronix reports that, as with BSODs in modern Windows, the Linux version will also generate a QR code to make it easier to look up information on your phone.' -- source: https://arstechnica.com/gadgets/2023/12/linux-distros-are-about-to-get-a-ki… Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, Hamilton, NZ Mobile +64 22 190 2375 https://www.cs.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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European alternatives to US services
by Peter Reutemann 13 Nov '24

13 Nov '24

Hi everyone For people who are thinking of maybe switching US-based services, below is a list of European alternatives: https://european-alternatives.eu/ Came across this on Mastodon: https://mastodon.social/@sturmsucht/113470149047788406 Of course, the AlternativeTo site is always worth checking out as well: https://alternativeto.net/ Cheers, Peter

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