August 2020 - wlug - list.wlug.org.nz

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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Scientists Rename Human Genes To Stop Microsoft Excel From Misreading Them as Dates
by Peter Reutemann 08 Aug '20

08 Aug '20

'There are tens of thousands of genes in the human genome: minuscule twists of DNA and RNA that combine to express all of the traits and characteristics that make each of us unique. Each gene is given a name and alphanumeric code, known as a symbol, which scientists use to coordinate research. But over the past year or so, some 27 human genes have been renamed, all because Microsoft Excel kept misreading their symbols as dates. From a report: The problem isn't as unexpected as it first sounds. Excel is a behemoth in the spreadsheet world and is regularly used by scientists to track their work and even conduct clinical trials. But its default settings were designed with more mundane applications in mind, so when a user inputs a gene's alphanumeric symbol into a spreadsheet, like MARCH1 -- short for "Membrane Associated Ring-CH-Type Finger 1" -- Excel converts that into a date: 1-Mar. This is extremely frustrating, even dangerous, corrupting data that scientists have to sort through by hand to restore. It's also surprisingly widespread and affects even peer-reviewed scientific work. One study from 2016 examined genetic data shared alongside 3,597 published papers and found that roughly one-fifth had been affected by Excel errors.' -- source: https://science.slashdot.org/story/20/08/06/147226 This auto-interpreting and getting things wrong has always annoyed me about Excel and other spreadsheet applications. Not sure whether there ever was an option to turn off this "auto-detect of content type"... 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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Yet Another Spreadsheet Screwup
by Lawrence D'Oliveiro 08 Aug '20

08 Aug '20

The British Army had to retract a bunch of notifications about promotions incorrectly sent out <https://www.theregister.com/2020/08/07/army_promotion_excel_snafu/>. I suspect the phrase “incorrectly sorted” means they forgot to select all the right columns before doing a sort of the rows, leading to a scrambling of the data. This kind of thing is all too common.

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The Next Step In SSD Evolution: NVMe Zoned Namespaces Explained
by Peter Reutemann 07 Aug '20

07 Aug '20

'In June we saw an update to the NVMe standard. The update defines a software interface to assist in actually reading and writing to the drives in a way to which SSDs and NAND flash actually works. Instead of emulating the traditional block device model that SSDs inherited from hard drives and earlier storage technologies, the new NVMe Zoned Namespaces optional feature allows SSDs to implement a different storage abstraction over flash memory. This is quite similar to the extensions SAS and SATA have added to accommodate Shingled Magnetic Recording (SMR) hard drives, with a few extras for SSDs. 'Zoned' SSDs with this new feature can offer better performance than regular SSDs, with less overprovisioning and less DRAM. The downside is that applications and operating systems have to be updated to support zoned storage, but that work is well underway. The NVMe Zoned Namespaces (ZNS) specification has been ratified and published as a Technical Proposal. It builds on top of the current NVMe 1.4a specification, in preparation for NVMe 2.0. The upcoming NVMe 2.0 specification will incorporate all the approved Technical Proposals, but also reorganize that same functionality into multiple smaller component documents: a base specification (one for each command set of block, zoned, key-value, and potentially more in the future), and separate specifications for each transport protocol (PCIe, RDMA, TCP). The standardization of Zoned Namespaces clears the way for broader commercialization and adoption of this technology, which so far has been held back by vendor-specific zoned storage interfaces and very limited hardware choices. [...]' -- source: https://hardware.slashdot.org/story/20/08/06/1916230 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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Can Killing Cookies Save Journalism?
by Peter Reutemann 07 Aug '20

07 Aug '20

'In May 2018, as the European Union’s landmark privacy law, the General Data Protection Regulation, went into effect, the main Dutch public broadcaster set in motion a grand experiment. The leadership at Nederlandse Publieke Omroep—essentially the BBC of the Netherlands—interpreted the law strictly, deciding that visitors to any of its websites would now be prompted to opt in or out of cookies, the tracking technology that enables personalized ads based on someone’s browsing history. And, unlike with most companies, who assume that anyone who skips past a privacy notice is OK with tracking, any NPO visitor who clicked past the obtrusive consent screen without making a choice would be opted out by default. The results weren’t terribly surprising: 90 percent of users opted out. Here is where the ad tech industry would have predicted calamity. A study performed by Google last year, for example, concluded that disabling cookies reduced publisher revenue by more than 50 percent. (Research by an independent team of economists, however, pegged the cookie premium at only 4 percent. Needless to say, there were methodological differences.) If the Google study was right, then NPO should have been heading for financial disaster. The opposite turned out to be true. Instead, the company found that ads served to users who opted out of cookies were bringing in as much or more money as ads served to users who opted in. The results were so strong that as of January 2020, NPO simply got rid of advertising cookies altogether. And rather than decline, its digital revenue is dramatically up, even after the economic shock of the coronavirus pandemic.' -- source: https://www.wired.com/story/can-killing-cookies-save-journalism/ 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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Cluster of 295 Chrome Extensions Caught Hijacking Google and Bing Search Results
by Peter Reutemann 07 Aug '20

07 Aug '20

'More than 80 million Chrome users have installed one of 295 Chrome extensions that have been identified to hijack and insert ads inside Google and Bing search results. The malicious extensions were discovered by AdGuard, a company that provides ad-blocking solutions, while the company's staff was looking into a series of fake ad-blocking extensions that were available on the official Chrome Web Store. AdGuard says that most of the extensions (245 out of the 295 extensions) were simplistic utilities that had no other function than to apply a custom background for Chrome's "new tab" page. In addition to the 295 cluster, AdGuard also found a large number of copycat extensions that cloned popular add-ons to capitalize on their brands, and then load malicious code that performed ad fraud or cookie stuffing. ZDNet has the full list of 295 Chrome extensions embedded in their article.' -- source: https://search.slashdot.org/story/20/08/05/213204 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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Massive 20GB Intel IP Data Breach Floods the Internet, Mentions Backdoors
by Peter Reutemann 07 Aug '20

07 Aug '20

'A leaker today posted on Twitter a link to a file sharing service that contains what an anonymous source claims is a portion of Intel's crown jewels: A 20GB folder of confidential Intel intellectual property. The leaker dubbed the release the "Intel exconfidential Lake Platform Release ;)" The folder has been posted by an anonymous source that claims more is coming soon, and while we don't know the exact specifics of the folder's contents, we have verified that it does exist. In fact, the title of many of the documents do correlate to the list of purported information posted by the leaker: Intel ME Bringup guides + (flash) tooling + samples for various platforms Kabylake (Purley Platform) BIOS Reference Code and Sample Code + Initialization code (some of it as exported git repos with full history) Intel CEFDK (Consumer Electronics Firmware Development Kit (Bootloader stuff)) SOURCES Silicon / FSP source code packages for various platforms Various Intel Development and Debugging Tools Simics Simulation for Rocket Lake S and potentially other platforms Various roadmaps and other documents Binaries for Camera drivers Intel made for SpaceX Schematics, Docs, Tools + Firmware for the unreleased Tiger Lake platform (very horrible) Kabylake FDK training videos Intel Trace Hub + decoder files for various Intel ME versions Elkhart Lake Silicon Reference and Platform Sample Code Some Verilog stuff for various Xeon Platforms, unsure what it is exactly. Debug BIOS/TXE builds for various Platforms Bootguard SDK (encrypted zip) Intel Snowridge / Snowfish Process Simulator ADK Various schematics Intel Marketing Material Templates (InDesign)' -- source: https://slashdot.org/story/20/08/06/199225 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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Chrome for Android May Soon Send Notifications Reminding You To Use Chrome
by Peter Reutemann 06 Aug '20

06 Aug '20

'For years now, Google Chrome has been an absolute dominant force in the world of web browsers, but since the relaunch of Microsoft Edge based on Google's Chromium, that position has been challenged. Now, Google is preparing to drive more Android owners back to using Chrome through targeted notifications. Over the admittedly brief history of the Internet, there have been a number of fierce competitions, commonly called "browser wars," between companies, in an effort to get more people to use their particular web browser. Mozilla and Netscape waged war against Internet Explorer, and Chrome fought and won against Firefox. Most recently, Microsoft Edge and Samsung Internet have begun to wage war against Chrome on desktop and Android respectively. Now, we've found that Google is preparing to try and win back some of those who have left Chrome for other browsers, starting on Android. Based on our reading of a series of code changes, we believe Google Chrome for Android will send you a notification if you haven't used Chrome in a while.' -- source: https://it.slashdot.org/story/20/08/05/2022204 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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Online Hacker Court Hearing Gets Hacked
by Lawrence D'Oliveiro 06 Aug '20

06 Aug '20

A bail hearing being conducted via Zoom video conference concerning the hacker who is accused of taking over several Twitter accounts to commit a Bitcoin fraud got “Zoombombed” by unidentified parties who interjected videos of racial slurs, music and porn <https://arstechnica.com/tech-policy/2020/08/zoombomber-crashes-court-hearin…>. Priceless subhead: “Judge will require password next time”.

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Hackers Could Use IoT Botnets To Manipulate Energy Markets
by Peter Reutemann 06 Aug '20

06 Aug '20

'Wired: At the Black Hat security conference on Wednesday, [researchers at the Georgia Institute of Technology] will present their findings, which suggest that high-wattage IoT botnets -- made up of power-guzzling devices like air conditioners, car chargers, and smart thermostats -- could be deployed strategically to increase demand at certain times in any of the nine private energy markets around the US. A savvy attacker, they say, would be able to stealthily force price fluctuations in the service of profit, chaos, or both. The researchers used real, publicly available data from the New York and California markets between May 2018 and May 2019 to study fluctuations in both the "day-ahead market" that forecasts demand and the "real-time market," in which buyers and sellers correct for forecasting errors and unpredictable events like natural disasters. By modeling how much power various hypothetical high-wattage IoT botnets could draw, and crunching the market data, the researchers devised two types of potential attacks that would alter energy pricing. They also figured out how far hackers would be able to push their attacks without the malicious activity raising red flags. "Our basic assumption is that we have access to a high-wattage IoT botnet," says Tohid Shekari, a PhD candidate at the Georgia Institute of Technology who contributed to the research, along with fellow PhD candidate Celine Irvine and professor Raheem Beyah. "In our scenarios, attacker one is a market player; he's basically trying to maximize his own profit. Attacker two is a nation-state actor who can cause financial damage to market players as part of a trade war or cold war. The basic part of either attack is to look at price-load sensitivity. If we change demand by 1 percent, how much is the price going to change as a result of that? You want to optimize the attack to maximize the gain or damage." An attacker could use their botnet's power to increase demand, for instance, when other entities are betting it will be low. Or they could bet that demand will go up at a certain time with certainty that they can make that happen. "The researchers caution that, based on their analysis, much smaller demand fluctuations than you might expect could affect pricing, and that it would take as few as 50,000 infected devices to pull off an impactful attack," the report adds. "Consumers whose devices are unwittingly conscripted into a high-wattage botnet would also be unlikely to notice anything amiss; attackers could intentionally turn on devices to pull power late at night or while people are likely to be out of the house. [...] The researchers calculated that market manipulation campaigns would cause, at most, a 7 percent increase in consumers' home electric bills, likely low enough to go unnoticed." The researchers say market manipulators could take home as much as $245 million a year, and cause as much as $350 million per year in economic damage.' -- source: https://hardware.slashdot.org/story/20/08/04/2213253 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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LastPass Will Warn You If Your Passwords Show Up On the Dark Web
by Peter Reutemann 06 Aug '20

06 Aug '20

'LastPass is updating its Security Dashboard with a feature that provides an overview of all your accounts, highlighting any passwords that could pose a security risk. The password manager is also introducing dark web monitoring, although it will require you to be a paid LastPass subscriber. Engadget reports: If you already use LastPass and the Security Dashboard sounds familiar, it's because it builds on the Security Challenge functionality LastPass developer LogMeIn added in 2010. As before, grading is a major aspect of the interface. When you first navigate to the Security Dashboard, you'll see a score of all your logins, followed by a breakdown of passwords that are either old, inactive, weak or reused. You can click or tap on a problematic password to change it, and LastPass will automatically take you to the webpage where you can update your login information. LogMeIn hasn't changed how the app calculates the overall score it gives to each user. But one significant improvement the Security Dashboard brings over the Security Challenge is that you don't need to manually run it each time you want to see the security of your online accounts. The score and steps you can take to improve your online security are there each time you visit that part of the software's interface. With today's update, LogMeIn is also introducing dark web monitoring. When you enable the feature, LastPass will proactively check your online accounts against Enzoic's compromised credentials database. If it detects an issue, it will notify you through both email and the app. Dark web monitoring is available to LastPass Premium, Family and Business subscribers. The dashboard, by contrast, is available to all LastPass users. ' -- source: https://it.slashdot.org/story/20/08/05/2027246 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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Hacker Leaks Passwords For 900+ Enterprise VPN Servers
by Peter Reutemann 06 Aug '20

06 Aug '20

'A hacker has published today a list of plaintext usernames and passwords, along with IP addresses for more than 900 Pulse Secure VPN enterprise servers. ZDNet reports: According to a review, the list includes: IP addresses of Pulse Secure VPN servers, Pulse Secure VPN server firmware version, SSH keys for each server, a list of all local users and their password hashes, admin account details, last VPN logins (including usernames and cleartext passwords), and VPN session cookies. Bank Security, a threat intelligence analyst specialized in financial crime [...] noted that all the Pulse Secure VPN servers included in the list were running a firmware version vulnerable to the CVE-2019-11510 vulnerability. Bank Security believes that the hacker who compiled this list scanned the entire internet IPv4 address space for Pulse Secure VPN servers, used an exploit for the CVE-2019-11510 vulnerability to gain access to systems, dump server details (including usernames and passwords), and then collected all the information in one central repository. Making matters worse, the list has been shared on a hacker forum that is frequented by multiple ransomware gangs. For example, the REvil (Sodinokibi), NetWalker, Lockbit, Avaddonm, Makop, and Exorcist ransomware gangs have threads on the same forum, and use it to recruit members (developers) and affiliates (customers). Many of these gangs perform intrusions into corporate networks by leveraging network edge devices like Pulse Secure VPN servers, and then deploy their ransomware payload and demand huge ransom demands. As Bank Security told ZDNet, companies have to patch their Pulse Secure VPNs and change passwords with the utmost urgency. ' -- source: https://it.slashdot.org/story/20/08/04/2333258 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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Twitter Says Android Security Bug Gave Access To Direct Messages
by Peter Reutemann 06 Aug '20

06 Aug '20

'Twitter says a security bug may have exposed the private direct messages of its Android app users, but said that there was no evidence that the vulnerability was ever exploited. From a report: The bug could have allowed a malicious Android app running on the same device to siphon off a user's direct messages stored in the Twitter app by bypassing Android's in-built data permissions. But, Twitter said that the bug only worked on Android 8 (Oreo) and Android 9 (Pie), and has since been fixed. A Twitter spokesperson told TechCrunch that the bug was reported by a security researcher "a few weeks ago" through HackerOne, which Twitter uses for its bug bounty program. "Since then, we have been working to keep accounts secure," said the spokesperson. "Now that the issue has been fixed, we're letting people know." Twitter said it waited to let its users know in order to prevent someone from learning about the issue and taking advantage of it before it was fixed.' -- source: https://yro.slashdot.org/story/20/08/05/1728253 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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Cambridge University Goes Microsoft
by Lawrence D'Oliveiro 05 Aug '20

05 Aug '20

Cambridge University, one of the pioneering centres of computer science research (since 1937), is retiring its in-house Hermes e-mail system in favour of moving completely to Microsoft Exchange Online <https://www.theregister.com/2020/08/04/cambridge_uni_decommissioning_hermes…>. Admin David McBride argues that Microsoft “does not implement IETF standards – at least not competently". In particular, he said: "Its IMAP service implementation is sufficiently poor as to lose data in practice, its mail handling has been seen to violate RFC MUST assertions that causes cryptographic email signatures to be rendered invalid, and it has even sometimes generated outbound email that contains invalid MIME data." He added: "Email services that do not competently support IETF standards, such as SMTP, IMAP, MIME and the like, present significant interoperability challenges and will risk leaving us locked in to using a single vendor." According to the info here <https://fanf2.user.srcf.net/photos.html> (linked from a reader comment), Hermes is not some kind of homebrew proprietary system; it is built on well-known open-source components such as Exim and Cyrus.

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Windows 10: HOSTS File Blocking Telemetry Is Now Flagged As a Risk
by Peter Reutemann 05 Aug '20

05 Aug '20

'Starting at the end of July, Microsoft has begun detecting HOSTS files that block Windows 10 telemetry servers as a 'Severe' security risk. Windows 10 users are reporting that Windows Defender had started detectingmodified HOSTS files as a 'SettingsModifier:Win32/HostsFileHijack' threat. So it seems that Microsoft had recently updated their Microsoft Defender definitions to detect when their servers were added to the HOSTS file. Users who utilize HOSTS files to block Windows 10 telemetry suddenly caused them to see the HOSTS file hijack detection. Users who intentionally modify their HOSTS file can allow this 'threat,' but it may enable all HOSTS modifications, even malicious ones, going forward.' -- source: https://tech.slashdot.org/story/20/08/04/143248 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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Firefox 79 Clears Redirect Tracking Cookies Every 24 Hours
by Peter Reutemann 05 Aug '20

05 Aug '20

'Mozilla today started rolling out Enhanced Tracking Protection (ETP) 2.0 in Firefox. While the company technically launched Firefox 79 for Windows, Mac, and Linux last week, it only unveiled its marquee feature today. Firefox 79 by default blocks redirect tracking, also known as bounce tracking, and adds a handful of new developer features. [...] Since enabling Enhanced Tracking Protection by default, Mozilla says it has blocked 3.4 trillion tracking cookies. But the company notes the ad industry has since created workarounds and new ways to collect user data as you browse the web.' -- source: https://news.slashdot.org/story/20/08/04/176239 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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Android's Nearby Share' File Sharing Feature is Finally Launching
by Peter Reutemann 05 Aug '20

05 Aug '20

'It will finally be slightly easier to share files, images, links, and other content between Android devices. Google is launching a new Android feature called "Nearby Share" that enables direct sharing between any device running Android 6 and up. Nearby Share is already available on some Pixel and Samsung phones, and Google says it'll arrive on other devices "over the next few weeks." From a report: Nearby Share works very much like Apple's AirDrop feature for the iPhone: you simply select the Nearby Share button on the share menu and then wait for a nearby phone to appear. Then whatever thing you're sharing is sent directly over your transfer method of choice to the other phone. As with AirDrop, you can set your preferred visibility for Nearby Share to different levels of contacts: all, some, or stay hidden. Google says it's even possible to "send and receive files anonymously." (Welcome to AirSlothing, Android users.) Nearby Share also shares files directly via whatever method your two phones deem is fastest: "Bluetooth, Bluetooth Low Energy, WebRTC or peer-to-peer Wi-Fi," which Google says should allow it to work offline.' -- source: https://tech.slashdot.org/story/20/08/04/1935221 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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Decades-Old Email Flaws Could Let Attackers Mask Their Identities
by Peter Reutemann 05 Aug '20

05 Aug '20

'At the Black Hat security conference on Thursday, researchers will present "darn subtle" flaws in industry-wide protections used to ensure that emails come from the address they claim to. From a report: The study looked at the big three protocols used in email sender authentication -- Sender Policy Framework (SPF), Domain Keys Identified Mail (DKIM), and Domain-based Message Authentication, Reporting and Conformance (DMARC) -- and found 18 instances of what the researchers call "evasion exploits." The vulnerabilities don't stem from the protocols themselves, but from how different email services and client applications implement them. Attackers could use these loopholes to make spearphishing attacks even harder to detect. "I think I'm a savvy, educated user and the reality is, no, that's actually not enough," says Vern Paxson, cofounder of the network traffic analysis firm Corelight and a researcher at the University of California, Berkeley, who worked on the study along with Jianjun Chen, a postdoctoral researcher at the International Computer Science Institute, and Jian Jiang, senior director of engineering at Shape Security. "Even users who are pretty savvy are going to look at the indicators that Gmail or Hotmail or others provide and be fooled," Paxson says. Think about when you hand a friend a birthday card at their party. You probably only write their first name on the outside of the envelope, and maybe underline it or draw a heart. If you mail that letter instead, though, you need the recipient's full name and detailed address, a stamp, and ultimately a postmark with a date on it. Sending email across the internet works similarly. Though email services only require you to fill out the "To" and "Subject" fields, there's a whole list of more detailed information getting filled out behind the scenes. Those industry-standard "headers," as they're known, include date and time sent and received, language, a unique identifier called a Message-ID, and routing information.' -- source: https://it.slashdot.org/story/20/08/04/2037238 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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Chrome and Edge Rise In Popularity. Firefox, Opera, and Safari Drop.
by Peter Reutemann 04 Aug '20

04 Aug '20

'July's statistics from web analytics firm Net Applications showed continuing changes in the most frequently-used web browsers. Softpedia reports: Last month, Google Chrome increased its market share from 70.19% to 71.00%, while Microsoft Edge jumped from 8.07% to 8.46%... The migration to the Chromium engine allowed Microsoft to turn Edge into a cross-platform browser, and this is one of the reasons that contributed to the growth of the new app. Edge is now available not only on Windows 10, but also on Windows 7, Windows 8, Windows 8.1, and even macOS. At the same time, Microsoft is also working on a Linux version of the browser, and a preview build is expected by the end of the year. But what made Microsoft Edge the second most-used desktop browser out there so fast after the switch to Chromium is definitely Microsoft offering it as the default browser in Windows 10. But what about Firefox? And Opera, and Apple's Safari? Computerworld reports: A decade ago, Mozilla's browser may have dreamed of upsetting the then-order of things, taking its April 2010 share of 25.1% and parlaying it into victory over IE — down to 61.2% by then... But that was Firefox's peak. At the end of July, Firefox stood at 7.3%, down three-tenths of a percentage point from the previous month... Firefox let its second-place spot (far, far behind Chrome) slip away in March, when Edge snatched it. That did not change in July. The gap between the two more than doubled, in fact, to 1.2 points. On almost every browser share metric, Firefox is in trouble... Since the end of January, Firefox has been stuck in the 7s; for the eight months before that, it was mired in the 8s; and between May 2018 and March 2019, Firefox floundered in the 9s. The trend is crystal clear... Elsewhere in Net Applications' numbers, Apple's Safari plunged to 3%, a loss of six-tenths of a point, its lowest mark since late 2008. Opera software's Opera also took a dive, ending July at 0.8%, a decline of three-tenths of a point. Those numbers have to be frightening to both those browsers' makers.' -- source: https://news.slashdot.org/story/20/08/03/028217 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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Package management mistake borking some Ubuntu machines running WireGuard
by Eric Light 04 Aug '20

04 Aug '20

Morning folks! For those who watch WireGuard, Jason Donenfeld is giving the Canonical kernel team a damn roasting after they bungled a Provides statement in about half of their Linux kernel manifests... which borks certain systems running WireGuard. For example, systems with the linux-image-oem kernel will try to install the linux-image-gke kernel (meant for the Google Kubernetes Engine), in order to receive the wireguard-modules package, leading to Proper Breakage. Donenfeld: "I'll note that this is at least the third time Canonical has forgotten the "Provides:" line for kernel packages. I'd highly recommend they put some time into double checking their procedures. [...] Usually things go quite a bit better with the WireGuard side of things, but this seems pretty par for the course with _Ubuntu_ and Canonical's kernel team. We've had perpetual issues over the last 6 months with getting Canonical to release high quality packages in a timely manner. A pretty large portion of my time is spent dealing with these bugs and Ubuntu in general." Looks like Canonical's kernel packaging team are already working on it, after Jason Donenfeld escalated a bug report earlier this morning. E -------------------------------------------- Q: Why is this email five sentences or less? A: http://five.sentenc.es

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Red Hat Security Update Renders Systems Unbootable
by Peter Reutemann 04 Aug '20

04 Aug '20

'A recently released Red Hat update for the BootHole Vulnerability (firehose link) is causing systems to become unbootable. It is widely reported that updates to the shim, grub2 and kernel packages in RHEL and CentOS 7 and 8 are leaving various systems that use secure boot unbootable. Current recommendations are to avoid updating your system until the issue is resolved, or at least avoid updating the shim, grub2 and kernel packages. Update, shared by PAjamian: Red Hat is now recommending that users do not apply grub2, fwupd, fwupdate or shim updates until new packages are available.' -- source: https://linux.slashdot.org/story/20/07/31/158212 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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O/T: Waikato-based laptop repairer
by David McNab 01 Aug '20

01 Aug '20

Hi all, Apologies for being slightly off-topic. Does anyone know of a computer repairer in/around Hamilton, who can do board-level troubleshooting and repair on laptops, without having to "send it to Auckland"? I've got a Gigabyte i7 laptop which became unable to charge its battery a couple of years ago. I was able to run it plugged into the mains since then. But just now, it won't even start up at all. I'd like someone to do some quick tests to determine if it's a feasible repair and, if so, give a cost estimate. Oh, but it was running Ubuntu, so not completely off-topic ;) All suggestions appreciated Cheers David

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