- wlug - list.wlug.org.nz

Google Removes Fake Signal and Telegram Apps Hosted on Play
by Peter Reutemann 01 Sep '23

01 Sep '23

'Researchers say they have found fake apps in Google Play that masqueraded as legitimate ones for the Signal and Telegram messaging platforms. The malicious apps could pull messages or other sensitive information from legitimate accounts when users took certain actions. ArsTechnica: An app with the name Signal Plus Messenger was available on Play for nine months and had been downloaded from Play roughly 100 times before Google took it down last April after being tipped off by security firm ESET. It was also available in the Samsung app store and on signalplus[.]org, a dedicated website mimicking the official Signal.org. An app calling itself FlyGram, meanwhile, was created by the same threat actor and was available through the same three channels. Google removed it from Play in 2021. Both apps remain available in the Samsung store. Both apps were built on open source code available from Signal and Telegram. Interwoven into that code was an espionage tool tracked as BadBazaar. The Trojan has been linked to a China-aligned hacking group tracked as GREF. BadBazaar has been used previously to target Uyghurs and other Turkic ethnic minorities. The FlyGram malware was also shared in a Uyghur Telegram group, further aligning it to previous targeting by the BadBazaar malware family. Signal Plus could monitor sent and received messages and contacts if people connected their infected device to their legitimate Signal number, as is normal when someone first installs Signal on their device. Doing so caused the malicious app to send a host of private information to the attacker, including the device IMEI number, phone number, MAC address, operator details, location data, Wi-Fi information, emails for Google accounts, contact list, and a PIN used to transfer texts in the event one was set up by the user.' -- source: https://tech.slashdot.org/story/23/08/31/1655233 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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With Version 117, Firefox Finally Speaks Chrome's Translation Language
by Peter Reutemann 01 Sep '23

01 Sep '23

'The latest version of the flagship FOSS browser is out, and it's picked up one of the main features for which we keep Chrome around. >From a report: The Firefox version 117 feature list might not look all that impressive, but it does have a big-ticket feature that may tempt people back: automatic translation. The snag is it's disabled by default in the release version, and you'll have to manually enable it. Although it was enabled in the betas, Mozilla has decided to go for a staged rollout and not enable it for everyone until Firefox 118 in six weeks or so. The new feature is integrated, privacy-respecting machine translation between multiple languages. This was already possible in older versions, but it needed an extension, and that had two side effects. One is that the extension hooked deep into the core of the browser in ways that Mozilla wasn't comfortable about, and the other is that once your text had been sent out to a third-party website, it could be snooped upon -- but the victims of any snooping would blame the browser, even if it wasn't the browser's fault. To enable it, go to the configuration page (enter about:config in the address bar), and search for a setting called browser.translations.enable.' -- source: https://tech.slashdot.org/story/23/08/31/1658259 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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FreeBSD Can Now Boot in 25 Milliseconds
by Peter Reutemann 31 Aug '23

31 Aug '23

'Replacing a sort algorithm in the FreeBSD kernel has improved its boot speed by a factor of 100 or more... and although it's aimed at a micro-VM, the gains should benefit everyone. From a report: MicroVMs are a hot area of technology R&D in the last half decade or so. The core idea is a re-invention of some of concepts and technology that IBM invented along with the hypervisor in the 1960s: designing OSes specifically to run as guests under another OS. This means building the OS specifically to run inside a VM, and to talk to resources provided by a specific hypervisor rather than to fake hardware. This means that the guest OS needs next to no support for real hardware, just VirtIO drivers which talk directly to facilities provided by the host hypervisor. In turn, the hypervisor doesn't have to provide an emulated PCI bus, emulated power management, emulated graphics card, emulated network interface cards, and so on. The result is that the hypervisor itself can be much smaller and simpler. The result of ruthlessly chopping down both the hypervisor, and the OS that runs inside it, is that both ends can be much smaller and simpler. That means that VMs can use much fewer resources, and start up much quicker.' -- source: https://tech.slashdot.org/story/23/08/30/1525238 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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Nautilus File Manager Gets New Features in Upcoming GNOME 45
by Peter Reutemann 29 Aug '23

29 Aug '23

'The upcoming release of GNOME 45 — expected September 20th — will bring new features to the Nautilus file manager (now in public beta testing). An anonymous reader shared this report from 9to5Linux: Nautilus in GNOME 45 already received a search performance boost, support for dropping images directly from web pages, an improved Grid View that now indicates starred files too, the ability to display bytes size as a tooltip for folder properties, and a more adaptive design for the sidebar. It also got an improved file opening experience while sandboxed (think Flatpak, Snap, etc.), a more consistent date and time format, a more simplistic definition of the Keyboard Shortcuts window, the ability to refocus the search bar using the Ctrl+F keyboard shortcut, and a better archiving experience. But there's room for more new features as Nautilus now received new "Search Everywhere" buttons to expand the search scope and a modern full-height sidebar layout, along with refined sidebar sizing and folding threshold. This is what Nautilus looks like in GNOME 45. The article includes some screenshots, adding that Nautilus "also received some performance improvements to more quickly generate multiple thumbnails, provide users with flickerless transition into and from search, and avoid DBus-activating other apps when it starts."' -- source: https://linux.slashdot.org/story/23/08/27/2329227 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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Linux What's New in Linux 6.5?
by Peter Reutemann 28 Aug '23

28 Aug '23

'9to5Linux: Just a couple of days after celebrating its 32nd anniversary , Linus Torvalds announced today the final release of the Linux 6.5 kernel series as a major update that introduces several new features, updated and new drivers for better hardware support, and other changes. After seven weeks of RCs, Linux kernel 6.5 is here with new features like MIDI 2.0 support in ALSA, ACPI support for the RISC-V architecture, Landlock support for UML (User-Mode Linux), better support for AMD "Zen" systems, as well as user-space support for the ARMv8.8 memcpy/memset instructions. Also new in Linux 6.5 is Intel TPMI (Topology Aware Register and PM Capsule Interface) support for the power capping subsystem and a TPMI interface driver for Intel RAPL, and the "runnable boosting" feature in the EAS balancer to improve CPU utilization for specific workloads. This release also improves SMP scheduling's load balancer to recognize SMT cores with more than one busy sibling and allows lower-priority CPUs to pull tasks to avoid superfluous migrations, and improves EXT4 file system's journalling, block allocator subsystems, and performance for parallel DIO overwrites.' -- source: https://linux.slashdot.org/story/23/08/27/2316212 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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Can You Run Linux On a Commodore 64?
by Peter Reutemann 28 Aug '23

28 Aug '23

'llvm-mos adapts the popular LLVM compiler to target the MOS 6502 processor (the 1980s microprocessor used in early home computing devices like the Apple II and the Commodore 64). So developer Onno Kortman used it to cross-compile semu, a "minimalist RISC-V system emulator capable of running Linux the kernel and corresponding userland." And by the end of the day, Kortman has Linux running on a Commodore 64. Long-time Slashdot reader johnwbyrd shared the link to Kortman's repository. Some quotes: "But does it run Linux?" can now be finally and affirmatively answered for the Commodore C64...! It runs extremely slowly and it needs a RAM Expansion Unit (REU), as there is no chance to fit it all into just 64KiB. It even emulates virtual memory with an MMU.... The screenshots took VICE a couple hours in "warp mode" (activate it with Alt-W) to generate. So, as is, a real C64 should be able to boot Linux within a week or so. The compiled 6502 code is not really optimized yet, and it might be realistic to squeeze a factor 10x of performance out of this. Maybe even a simple form of JIT compilation? It should also be possible to implement starting a checkpointed VM (quickly precomputed on x86-64) to avoid the lengthy boot process... I also tested a minimal micropython port (I can clean it up and post it on github if there is interest), that one does not use the MMU and is almost barely remotely usable with lots of optimism at 100% speed. A key passage: I have not tested it on real hardware yet, that's the next challenge .. for you. So please send me a link to a timelapse video of an original unit with REU booting Linux :D Its GitHub repository has build and run instructions...' -- source: https://linux.slashdot.org/story/23/08/27/1532207 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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Bloomberg Terminals Still Exist
by Lawrence D'Oliveiro 27 Aug '23

27 Aug '23

Bloomberg still supplies special terminals for accessing the services it provides, and those services cost a pretty penny -- over $40,000 a year for each. And Kāinga Ora has seven of the things <https://www.nzherald.co.nz/nz/politics/kainga-ora-spends-more-than-300000-a…>. These things have a long history. A look at some older versions: <https://www.bloomberg.com/professional/blog/look-back-bloomberg-keyboard/>.

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When A Certificate Authority Is Too Big To Fail
by Lawrence D'Oliveiro 26 Aug '23

26 Aug '23

Certificate authorities (CAs) have a crucial role in the chain of trust that binds the computing world together right now. So when it turns out that a rather large company (Symantec) has been issuing dodgy certificates for many years, the ramifications run uncomfortably wide. Google has been gradually winding down its trust of Symantec-issued over a multiyear period, because blocking them all at once would just be too painful for its users. It turns out some of these CAs are also used for signing applications for Windows. Microsoft finally got around to blocking the Symantec one within the last few days, only to abruptly reverse course and trust it again, because it caused serious trouble for too many Windows systems <https://arstechnica.com/security/2023/08/a-renegade-certificate-is-removed-…>. The applications concerned should have been updated to not depend on such a worthless CA. But it seems, ensuring Windows users update all their relevant apps can be a mountain just too high to climb.

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Firefox Users May Import Chrome Extensions Now
by Peter Reutemann 25 Aug '23

25 Aug '23

'Mozilla has implemented the WebExtensions system in its browser, allowing Firefox users to import select extensions from other browsers like Chrome. gHacks reports: The feature, which is in testing at the moment, can be enabled by all users of the latest stable version of Firefox. 1. Load about:config in the browser's address bar. 2. Confirm that you will be careful to continue. 3. Search for browser.migrate.chrome.extensions.enabled. 4. Set the feature to True, which enables it. 5. Restart Firefox. Mozilla has integrated it into the browser's import functionality, which users may use on first run or at any time from the Settings page. To do so, select Menu > Settings > Import Data (button), or load about:preferences#general in the browser's address bar and activate the import data button on the page. Select Chrome from the list, expand the available import options and make sure extensions are checked. Imports are usually limited to some data, such as bookmarks or the browsing history. Firefox is the first major browser, maybe the first browser at all, that adds extensions to the list of supported imports. The feature is limited at the time to Google Chrome and select extensions. Even though Firefox and Chrome extensions use the same framework, WebExtensions, they are not compatible immediately. Firefox users who attempt to install extensions from Chrome's Web Store may notice that this is not working. Mozilla decided to create a list of extension pairs for extensions that are available on the Chrome Web Store and the Mozilla Add-ons Store. Instead of importing the Chrome extension directly, Firefox is installing the Firefox version of the extension from Mozilla's own extension store. ' -- source: https://news.slashdot.org/story/23/08/24/2233242 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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WinRAR Flaw Lets Hackers Run Programs When You Open RAR Archives
by Peter Reutemann 23 Aug '23

23 Aug '23

'A critical vulnerability (CVE-2023-40477) has been patched in WinRAR, enabling remote attackers to execute arbitrary code by luring victims into opening a specially crafted RAR file. The severity rating is only 7.8 though due to user deception being necessary. BleepingComputer reports: The vulnerability was discovered by researcher "goodbyeselene" of Zero Day Initiative, who reported the flaw to the vendor, RARLAB, on June 8th, 2023. "The specific flaw exists within the processing of recovery volumes," reads the security advisory released on ZDI's site. "The issue results from the lack of proper validation of user-supplied data, which can result in a memory access past the end of an allocated buffer." RARLAB released WinRAR version 6.23 on August 2nd, 2023, effectively addressing CVE-2023-40477. Therefore, WinRAR users are strongly advised to apply the available security update immediately. Apart from the RAR4 recovery volumes processing code fix, version 6.23 addresses an issue with specially crafted archives leading to wrong file initiation, which is also considered a high-severity problem.' -- source: https://it.slashdot.org/story/23/08/18/2157249 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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