- wlug - University of Waikato Mail Lists

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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Allowing PBL'ed IP addresses in Postfix
by David McNab 31 Jul '20

31 Jul '20

Hi, Has anyone had experience with configuring Postfix to allow inbound client SMTP connections from NZ-based IP addresses that have been Policy Block Listed (PBL'ed) by their ISP? Spark have PBL'ed most or all of their home and small business fibre/*DSL connection IP addresses. 2degrees have PBL'ed most/all of their cellular data IP addresses. I'm trying to support a user to send email from their cellphone email client. Cheers David

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