- wlug - University of Waikato Mail Lists

New CrossTalk Attack Impacts Intel's Mobile, Desktop, and Server CPUs
by Peter Reutemann 10 Jun '20

10 Jun '20

'Academics from a university in the Netherlands have published details today about a new vulnerability in Intel processors. From a report: The security bug, which they named CrossTalk, enables attacker-controlled code executing on one CPU core to leak sensitive data from other software running on a different core. The Vrije University's Systems and Network Security Group (VUSec) says the CrossTalk vulnerability is another type of MDS (microarchitectural data sampling) attack. MDS attacks target user data while in a "transient" state, as it's being processed inside the CPU and its many data-caching systems. More specifically, CrossTalk attacks data while it's being processed by the CPU's Line Fill Buffer (LBF), one of these aforementioned CPU cache systems. According to the VUSec team, the LBF cache actually works with a previously undocumented memory "staging buffer" that is shared by all CPU cores.' -- source: https://it.slashdot.org/story/20/06/09/1941205 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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Pinebook Pro review—a $200 FOSS-to-the-hilt magnesium-chassis laptop
by Peter Reutemann 09 Jun '20

09 Jun '20

Since we had our own demo of the Pinebook earlier this year, here is another take: 'In early March of this year, I ordered one of the FOSS-driven Pine64 project's newest designs—the Pinebook Pro. The company's manufacturing efforts have taken an enormous hit due to the impact of COVID-19 on its Chinese manufacturing partners, which kept me from receiving my Pinebook Pro until last week. Unfortunately, COVID-19 didn't merely slow down production. It also made QA impossible, which led to enough problems with my new laptop that it's going to need to be replaced. We'll talk about why that is in much greater detail later, but for right now, keep in mind that some parts of my experience aren't as-designed for the hardware. You should also keep in mind that the Pinebook isn't exactly a consumer product—it's a device aimed squarely at hobbyists and tinkerers with offbeat plans and limited budget. Most people will not want to replace their standard consumer laptop or Chromebook with a Pinebook Pro—but it's a fascinating look at what's possible in inexpensive hardware design with an intense focus on privacy, open source design, and community.' -- source: https://arstechnica.com/gadgets/2020/06/pinebook-pro-review-a-200-foss-to-t… 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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Plundering of crypto keys from ultrasecure SGX sends Intel scrambling again
by Peter Reutemann 09 Jun '20

09 Jun '20

'For the past two years, modern CPUs—particularly those made by Intel—have been under siege by an unending series of attacks that make it possible for highly skilled attackers to pluck passwords, encryption keys, and other secrets out of silicon-resident memory. On Tuesday, two separate academic teams disclosed two new and distinctive exploits that pierce Intel’s Software Guard eXtension, by far the most sensitive region of the company’s processors. Abbreviated as SGX, the protection is designed to provide a Fort Knox of sorts for the safekeeping of encryption keys and other sensitive data even when the operating system or a virtual machine running on top is badly and maliciously compromised. SGX works by creating trusted execution environments that protect sensitive code and the data it works with from monitoring or tampering by anything else on the system. Key to the security and authenticity assurances of SGX is its creation of what are called enclaves, or blocks of secure memory. Enclave contents are encrypted before they leave the processor and are written in RAM. They are decrypted only after they return. The job of SGX is to safeguard the enclave memory and block access to its contents by anything other than the trusted part of the CPU. Tuesday’s attacks aren’t the first to defeat SGX. In 2018, a different team of researchers broke into the fortified Intel region after building on an attack known as Meltdown, which, along with a similar attack known as Spectre, ushered in the flurry of processor exploits. A different team of researchers broke SGX earlier this year. Intel mitigated the earlier SGX vulnerability by introducing microcode updates. However, these mitigations did not last, as two new attacks have sent Intel scrambling anew to devise new defenses. Intel released the new updates on Tuesday and expects them to be available to end users in the coming weeks. Depending on the computer, the fix will either be installed automatically or will require manual intervention. Users, particularly those who rely on the SGX, should check with the manufacturer of their machine and ensure that the update is installed as soon as practical. The new SGX attacks are known as SGAxe and CrossTalk. Both break into the fortified CPU region using separate side-channel attacks, a class of hack that infers sensitive data by measuring timing differences, power consumption, electromagnetic radiation, sound, or other information from the systems that store it. The assumptions for both attacks are roughly the same. An attacker has already broken the security of the target machine through a software exploit or a malicious virtual machine that compromises the integrity of the system. While that’s a tall bar, it’s precisely the scenario that SGX is supposed to defend against.' -- source: https://arstechnica.com/information-technology/2020/06/new-exploits-plunder… 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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Bryan Lunduke Explains Why Linux Sucks in 2020
by Peter Reutemann 09 Jun '20

09 Jun '20

'Roblimo once called it "a tradition, not just a speech" -- Bryan Lunduke's annual "Linux Sucks" presentations at various Linux conferences. But before you get too upset, in his 2014 interview with Slashdot Lunduke admitted "I love Linux, I have made my whole life around Linux. I work for Linux companies. I write for Linux magazines, but it really blows..." This year he's releasing a special YouTube version of Linux Sucks 2020, the first time Lunduke has attempted the talk without a live audience, "And it feels really wicked weird." But he's still trying to get a rise out of his audience. "Follow me on this into Journey Into Graphs and Numbers Land," Lunduke says playfully, pulling up one of his 160 x 90 pixel slides showing current market share for Windows, Mac, and then Linux "You might notice that some platforms have a higher market share than Linux does," he says with a laugh, describing one slide showing Linux as "scooping up the bottom of the barrel at 1.6%..." "But here's the thing. These numbers have been either consistent, or for Linux, slowly dropping." And then he puts up a graph showing the number of searches for Linux. "If you look back at 2004 -- the year 2004, 16 years ago -- that was the high point in interest in searching for the word Linux (or Linux plus other things). 2006 it was about half that -- so about two years later it had dropped down to about half. Here in 2020 it is so low, not only does it not fill up the first bar of pixels there, it's like only three pixels in. That doesn't happen -- that sort of decline does not happen -- unless the platform sucks. That's just the truth of the matter. That's just how it goes, right?"' -- source: https://linux.slashdot.org/story/20/06/07/1941256 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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Vulnerabilities in Popular Open Source Projects Doubled in 2019
by Peter Reutemann 08 Jun '20

08 Jun '20

'A study that analyzed the top 54 open source projects found that security vulnerabilities in these tools doubled in 2019, going from 421 bugs reported in 2018 to 968 last year. From a report: According to RiskSense's "The Dark Reality of Open Source" report, released today, the company found 2,694 bugs reported in popular open source projects between 2015 and March 2020. The report didn't include projects like Linux, WordPress, Drupal, and other super-popular free tools, since these projects are often monitored, and security bugs make the news, ensuring most of these security issues get patched fairly quickly. Instead, RiskSense looked at other popular open source projects that aren't as well known but broadly adopted by the tech and software community. This included tools like Jenkins, MongoDB, Elasticsearch, Chef, GitLab, Spark, Puppet, and others. RiskSense says that one of the main problems they found during their study was that a large number of the security bugs they analyzed had been reported to the National Vulnerability Database (NVD) many weeks after they've been publicly disclosed. The company said it usually took on average around 54 days for bugs found in these 54 projects to be reported to the NVD, with PostgreSQL seeing reporting delays that amounted to eight months.' -- source: https://it.slashdot.org/story/20/06/08/1417259 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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Coffee Run--Blender Open Movie
by Lawrence D'Oliveiro 08 Jun '20

08 Jun '20

The latest annual short-feature project from the Blender Animation Studio came out week before last <https://www.youtube.com/watch?v=PVGeM40dABA>. At just about 3 minutes long, this one is done in the style of a 2D-rendered video game. But beware: there are some less-than-lighthearted elements behind the surface.

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Brave Browser Mistake Adds Its Referrer Code For Cryptocurrency Sites
by Peter Reutemann 07 Jun '20

07 Jun '20

'The following report appeared on Yahoo! Finance: Privacy-focused browser Brave was found to autocomplete several websites and keywords in its address bar with an affiliate code. Shortly after a user published his findings, Brave CEO and co-founder Brendan Eich addressed the incident and called it "a mistake we're correcting." Eich said that while Brave is a Binance affiliate [a cryptocurrency exchange], the browser's autocompleting feature should not have added any new affiliate codes. "The autocomplete default was inspired by search query clientid attribution that all browsers do, but unlike keyword queries, a typed-in URL should go to the domain named, without any additions," Eich wrote in the thread. "Sorry for this mistake — we are clearly not perfect, but we correct course quickly," he added. Android Police reports the mistake occured more than 10 weeks ago — and that referrer codes were also included for other cryptocurrency-related sites: The browser's GitHub repository reveals the functionality was first added on March 25th, and the current list of sites includes Binance, Coinbase, Ledger, and Trezor. Brave Software receives a kickback for purchases/accounts made with those services — for example, Coinbase says that when you refer a new customer to the service, you can earn 50% of their fees for the first three months. The nature of these affiliate programs also allows the referrer — in this case, Brave Software — to view some amount of data about the customers who sign up with the code. Coinbase's program provides "direct access to your campaign's performance data," while Trezor offers a "detailed overview of purchases." Brave CEO and co-founder Brendan Eich (who also created the JavaScript programming language) tweeted, "For what it's worth there's a setting to disable the autocomplete defaults that add affiliate codes, in brave://settings first page. Current plan is to flip default to off as shown here. You can disable ahead of our release schedule if you want to. "Good to hear from supporters who'll enable it."' -- source: https://it.slashdot.org/story/20/06/07/2217224 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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Ars Technica: We put Western Digital’s dreaded SMR Red drive to the test
by Peter Reutemann 07 Jun '20

07 Jun '20

'Western Digital has been receiving a storm of bad press—and even lawsuits—concerning their attempt to sneak SMR disk technology into their "Red" line of NAS disks. To get a better handle on the situation, Ars purchased a Western Digital 4TB Red EFAX model SMR drive and put it to the test ourselves.' -- source: https://arstechnica.com/gadgets/2020/06/western-digitals-smr-disks-arent-gr… 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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New Java-Based Ransomware Targets Linux and Windows Systems
by Peter Reutemann 07 Jun '20

07 Jun '20

'"A newly uncovered form of ransomware is going after Windows and Linux systems," reports ZDNet, "in what appears to be a targeted campaign." Named Tycoon after references in the code, this ransomware has been active since December 2019 and looks to be the work of cyber criminals who are highly selective in their targeting. The malware also uses an uncommon deployment technique that helps stay hidden on compromised networks. The main targets of Tycoon are organisations in the education and software industries. Tycoon has been uncovered and detailed by researchers at BlackBerry working with security analysts at KPMG. It's an unusual form of ransomware because it's written in Java, deployed as a trojanised Java Runtime Environment and is compiled in a Java image file (Jimage) to hide the malicious intentions... [T]he first stage of Tycoon ransomware attacks is less uncommon, with the initial intrusion coming via insecure internet-facing Remote Desktop Protocol servers. This is a common attack vector for malware campaigns and it often exploits servers with weak or previously compromised passwords. Once inside the network, the attackers maintain persistence by using Image File Execution Options (IFEO) injection settings that more often provide developers with the ability to debug software. The attackers also use privileges to disable anti-malware software using ProcessHacker in order to stop removal of their attack... After execution, the ransomware encrypts the network with files encrypted by Tycoon given extensions including .redrum, .grinch and .thanos — and the attackers demand a ransom in exchange for the decryption key. The attackers ask for payment in bitcoin and claim the price depends on how quickly the victim gets in touch via email. The fact the campaign is still ongoing suggests that those behind it are finding success extorting payments from victims. ' -- source: https://linux.slashdot.org/story/20/06/06/0445235 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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Microsoft Dropped for Open Source Again in Germany: Hamburg Follows Munich's Lead
by Peter Reutemann 07 Jun '20

07 Jun '20

'"The trend towards open-source software on government computers is gathering pace in Germany," reports ZDNet: In the latest development, during coalition negotiations in the city-state of Hamburg, politicians have declared they are ready to start moving its civil service software away from Microsoft and towards open-source alternatives. The declaration comes as part of a 200-page coalition agreement between the Social Democratic and Green parties, which will define how Hamburg is run for the next five years. It was presented on Tuesday but has yet to be signed off. The political parties in charge in Hamburg are the same as those in Munich, who recently agreed to revert back to that city's own open-source software. "With this decision, Hamburg joins a growing number of German states and municipalities that have already embarked on this path," said Peter Ganten, chairman of the Open Source Business Alliance, or OSBA, based in Stuttgart. He's referring to similar decisions made in Schleswig-Holstein, Thuringia, Bremen, Dortmund, and Munich. But, he adds: "The Hamburg decision is nevertheless remarkable because the city has always been more aggressively oriented towards Microsoft. "In the future we will aim to have more open-source software in digital management [systems] and we also want to develop our own code, which will remain open," the head of the local Hamburg-Mitte branch of the Greens, Farid Mueller, wrote on his website. Hamburg wants to be a leading example of digital independence, he stated. The article also adds a final interesting detail. A Microsoft spokeperson told a Germany technology site "that the company didn't see the desire for more open-source software as an attack on itself. Microsoft now also uses and develops a lot of open source and welcomed fair competition, the spokesperson added."' -- source: https://linux.slashdot.org/story/20/06/07/0147255 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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