- wlug - list.wlug.org.nz

upcoming meeting
by Peter Reutemann 12 Aug '20

12 Aug '20

Hi everyone With the country moving up levels again today [1], I will reevaluate next week whether we are still allowed to meet on campus for our August WLUG meeting. At this stage, the university only seems to assess events of more than 100 people. However, they are requiring social distancing, which is a bit more difficult when you have a hands-on meeting (wireguard). For the time being, stay safe and be kind! Cheers, Peter [1] https://covid19.govt.nz/updates-and-resources/latest-updates/new-zealands-a… -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Android is Becoming a Worldwide Earthquake Detection Network
by Peter Reutemann 12 Aug '20

12 Aug '20

'Google is creating a worldwide, Android phone-powered earthquake alert system. The first part of that system is rolling out today. If you opt in, the accelerometer in your Android phone will become one data point for an algorithm designed to detect earthquakes. Eventually, that system will automatically send warnings to people who could be impacted. From a report: It's a feature made possible through Google's strengths: the staggering numbers of Android phones around the world and clever use of algorithms on big data. As with its collaboration with Apple on exposure tracing and other Android features like car crash detection and emergency location services, it shows that there are untapped ways that smartphones could be used for something more important than doomscrolling. Google is rolling out the system in small stages. First, Google is partnering with the United States Geological Survey and the California Office of Emergency Services to send the agencies' earthquake alerts to Android users in that state. Those alerts are generated by the already-existing ShakeAlert system, which uses data generated by traditional seismometer' -- source: https://tech.slashdot.org/story/20/08/11/1440235 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Mozilla Lays Off 250 Employees While it Refocuses on Commercial Products
by Peter Reutemann 12 Aug '20

12 Aug '20

'The Mozilla Corporation announced today it was laying off approximately 250 staff members in a move to shore up the organization's financial future. From a report: The layoffs were publicly announced in a blog post today. Employees were notified hours before, earlier this morning, via an email sent by Mitchell Baker, Mozilla Corporation CEO and Mozilla Foundation Chairwoman. Baker's message cited the organization's need to adapt its finances to a post-COVID-19 world and re-focus the organization on new commercial services. Baker said that after the onset of the COVID-19 pandemic, Mozilla attempted to minimize the healthcare crisis' financial impact with "immediate cost-saving measures such as pausing our hiring, reducing our wellness stipend and cancelling our All-Hands [meetings]." However, Baker said that Mozilla's "pre-COVID plan is no longer workable." "We have talked about the need for change -- including the likelihood of layoffs -- since the spring. Today these changes become real," the Mozilla CEO said today.' -- source: https://tech.slashdot.org/story/20/08/11/1458214 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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China Blocking ESNI Connections
by Lawrence D'Oliveiro 11 Aug '20

11 Aug '20

TLS 1.3 (the latest version of the protocol used for “HTTPS” connections) adds a feature called “Encrypted Server Name Indication” (ESNI). This removes a loophole where the initial exchange, in which the browser indicates to the server which (of possibly many) virtual host names it is trying to connect to, is sent unencrypted. Reports <https://www.theregister.com/2020/08/11/china_blocking_tls_1_3_esni/> are saying that the Great Firewall of China is trying to block all such connection attempts, just in case any of them happen to be to “banned” sites. However, it is (currently) possible to manipulate the packet stream in such a way as to fool this filtering, so the connection can go through.

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CrowPi 2 Raspberry-π-Based Laptop Incl Development Board
by Lawrence D'Oliveiro 11 Aug '20

11 Aug '20

Review <https://www.youtube.com/watch?v=l0WGyY7njWQ> of a laptop-styled unit built around a Raspberry π 4. Lift off the (wireless) keyboard, to reveal a built-in development board with a whole bunch of extra components on it for you to play with. Also comes with a few sensors that you can connect to conduct various experiments, plus two game controllers and a remote control. Oh, and some cardboard cut-out-and-fold Minecraft blocks.

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Boeing 747 Navigation Databases Updated Via 3½” Floppy Drives
by Lawrence D'Oliveiro 11 Aug '20

11 Aug '20

A group of security hackers took advantage of British Airways’ decommissioning of its Boeing 747 fleet to have a nose round inside one before the scrap dealers moved in <https://www.theregister.com/2020/08/10/boeing_747_floppy_drive_updates_walk…>. The navigation database has to be updated every 28 days. This is done by bringing along a 3½” floppy disk with the new info and putting it into an onboard drive. On the bright side, there really seemed to be a good separation between the customer-accessible in-flight entertainment systems and those used to manage critical aircraft systems.

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Snapdragon chip flaws put >1 billion Android phones at risk of data theft
by Peter Reutemann 10 Aug '20

10 Aug '20

'A billion or more Android devices are vulnerable to hacks that can turn them into spying tools by exploiting more than 400 vulnerabilities in Qualcomm’s Snapdragon chip, researchers reported this week. The vulnerabilities can be exploited when a target downloads a video or other content that’s rendered by the chip. Targets can also be attacked by installing malicious apps that require no permissions at all. >From there, attackers can monitor locations and listen to nearby audio in real time and exfiltrate photos and videos. Exploits also make it possible to render the phone completely unresponsive. Infections can be hidden from the operating system in a way that makes disinfecting difficult. Snapdragon is what’s known as a system on a chip that provides a host of components, such as a CPU and a graphics processor. One of the functions, known as digital signal processing, or DSP, tackles a variety of tasks, including charging abilities and video, audio, augmented reality, and other multimedia functions. Phone makers can also use DSPs to run dedicated apps that enable custom features.' -- source: https://arstechnica.com/information-technology/2020/08/snapdragon-chip-flaw… Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Researcher Discovers New 'HTTP Request Smuggling Attack' Variants
by Peter Reutemann 10 Aug '20

10 Aug '20

'Some scary new variants of "HTTP request smuggling" have been discovered by Amit Klein, VP of security research at SafeBreach, reports Security Week: Specifically, an HTTP request smuggling attack, which can be launched remotely over the internet, can allow a hacker to bypass security controls, gain access to sensitive data, and compromise other users of the targeted app. While the attack method has been known for more than a decade, it still hasn't been fully mitigated. Klein has managed to identify five new attack variants and he has released proof-of-concept (PoC) exploits. He demonstrated his findings using the Abyss X1 web server from Aprelium and the Squid caching and forwarding HTTP web proxy. The developers of Abyss and Squid have been notified of the vulnerabilities exploited by Klein during his research, and they have released patches and mitigations. One of the attacks bypasses the OWASP ModSecurity Core Rule Set (CRS), which provides generic attack detection rules for ModSecurity or other web application firewalls. OWASP has also released fixes after being notified. Klein told SecurityWeek ahead of his talk on HTTP request smuggling at the Black Hat conference that an attacker needs to find combinations of web servers and proxy servers with "matching" vulnerabilities in order to launch an attack, which makes it difficult to determine exactly how many servers are impacted. However, an attacker can simply try to launch an attack to determine if a system is vulnerable. "The attack is not demanding resource-wise, so there's no downside to simply trying it," Klein said. In his research, he demonstrated a web cache poisoning attack, in which the attacker forces the proxy server to cache the content of one URL for a request of a different URL. He says attacks can be launched en-masse through a proxy server against multiple different web servers or against multiple proxy servers... While there haven't been any reports of HTTP request smuggling being used in the wild, Klein has pointed out that attacks may have been launched but were not detected by the target.' -- source: https://it.slashdot.org/story/20/08/09/0047219 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Linus Torvalds: Linux 5.8 "One of our Biggest Releases of All Time"
by Peter Reutemann 10 Aug '20

10 Aug '20

'This week saw the release Linux 5.8, which Linus Torvalds called "one of our biggest releases of all time," reports TechRepublic: The new version of the Linux kernel brings a number of updates to Linux 5.7 spanning security, core components, drivers, memory management, networking and improvements to the kernel's design, amongst others. This includes updates for Microsoft's Hyper-V virtualization platform, Intel Tiger Lake Thunderbolt support, improvements to Microsoft's exFAT file system, and support for newer Intel and ARM chips. Torvalds said the kernel had received over 15,000 merge requests and that around 20% of all the files in the kernel source repository had been modified. "That's really a fairly big percentage, and while some of it is scripted, on the whole it's really just the same pattern: 5.8 has simply seen a lot of development," Torvalds said. Translated into numbers, Linux 5.8 includes over 800,000 new lines and over 14,000 changed files. It also received one of the biggest number of merge requests during its merge window — over 14,000 non-merge commits and more than 15,000 including merges, according to Torvalds. "5.8 looks big. Really big," he added.' -- source: https://linux.slashdot.org/story/20/08/09/2046232 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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Infographic: Ubuntu from 2004 to 20.04 LTS
by Peter Reutemann 09 Aug '20

09 Aug '20

'Today, the first point release of Ubuntu 20.04 LTS went live! To celebrate, we wanted to share how Ubuntu has evolved since the first release in 2004 to where we are today with 20.04. Thanks to those in the community and our users for your contributions and joining us on this journey. Upgrade to Ubuntu 20.04.1 LTS now!' -- source: https://ubuntu.com/blog/infographic-ubuntu-from-2004-to-20-04-lts Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

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