March 2019 - wlug - list.wlug.org.nz

Android Users' Security and Privacy At Risk From Shadowy Ecosystem of Pre-Installed Software, Study Warns
by Peter Reutemann 25 Mar '19

25 Mar '19

'Researchers behind a large-scale independent study of pre-installed Android apps "unearthed a complex ecosystem of players with a primary focus on advertising and 'data-driven services' -- which they argue the average Android user is likely to be unaware of (while also likely lacking the ability to uninstall/evade the baked in software's privileged access to data and resources themselves)," reports TechCrunch. From the report: The study, which was carried out by researchers at the Universidad Carlos III de Madrid (UC3M) and the IMDEA Networks Institute, in collaboration with the International Computer Science Institute (ICSI) at Berkeley (USA) and Stony Brook University of New York (US), encompassed more than 82,000 pre-installed Android apps across more than 1,700 devices manufactured by 214 brands, according to the IMDEA institute. "The study shows, on the one hand, that the permission model on the Android operating system and its apps allow a large number of actors to track and obtain personal user information," it writes. "At the same time, it reveals that the end user is not aware of these actors in the Android terminals or of the implications that this practice could have on their privacy. Furthermore, the presence of this privileged software in the system makes it difficult to eliminate it if one is not an expert user." In all 1,200 developers were identified behind the pre-installed software they found in the data-set they examined, as well as more than 11,000 third party libraries (SDKs). Many of the preloaded apps were found to display what the researchers dub potentially dangerous or undesired behavior. The data-set underpinning their analysis was collected via crowd-sourcing methods -- using a purpose-built app (called Firmware Scanner), and pulling data from the Lumen Privacy Monitor app. The latter provided the researchers with visibility on mobile traffic flow -- via anonymized network flow metadata obtained from its users. They also crawled the Google Play Store to compare their findings on pre-installed apps with publicly available apps -- and found that just 9% of the package names in their dataset were publicly indexed on Play. Another concerning finding relates to permissions. In addition to standard permissions defined in Android (i.e. which can be controlled by the user) the researchers say they identified more than 4,845 owner or "personalized" permissions by different actors in the manufacture and distribution of devices. So that means they found systematic user permissions workarounds being enabled by scores of commercial deals cut in a non-transparency data-driven background Android software ecosystem. The researchers address the lack of transparency and accountability in the Android ecosystem by suggesting the introduction and use of certificates signed by globally-trusted certificate authorities, or a certificate transparency repository "dedicated to providing details and attribution for certificates used to sign various Android apps, including pre-installed apps, even if self-signed." They also suggest Android devices should be required to document all pre-installed apps, plus their purpose, and name the entity responsible for each piece of software -- and do so in a manner that is "accessible and understandable to users."' -- source: https://tech.slashdot.org/story/19/03/25/2058215 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/

1 0

Google Fixes Chrome 'Evil Cursor' Bug Abused by Tech Support Scam Sites
by Peter Reutemann 25 Mar '19

25 Mar '19

'Google has patched a Chrome bug that was being abused in the wild by tech support scammers to create artificial mouse cursors and lock users inside browser pages by preventing them from closing and leaving browser tabs. From a report: The trick was first spotted in September 2018 by Malwarebytes analyst Jerome Segura. Called an "evil cursor," it relied on using a custom image to replace the operating system's standard mouse cursor graphic. A criminal group that Malwarebytes called Partnerstroka operated by switching the standard OS 32-by-32 pixels mouse cursor with one of 128 or 256 pixels in size. A normal cursor would still appear on screen, but in the corner of a bigger transparent bounding box. [...] The "evil cursor" fix is currently live for Google Canary users, and is scheduled to land in the Chrome 75 stable branch, to be released later this spring.' -- source: https://tech.slashdot.org/story/19/03/25/210220 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/

1 0

Telegram Adds 'Delete Everywhere' Nuclear Option -- Killing Chat History
by Peter Reutemann 25 Mar '19

25 Mar '19

'Instant messaging service Telegram has added a feature that lets a user delete messages in one-to-one and/or group private chats, after the fact, and not only from their own inbox. From a report: The new 'nuclear option' delete feature allows a user to selectively delete their own messages and/or messages sent by any/all others in the chat. They don't even have to have composed the original message or begun the thread to do so. They can just decide it's time. Let that sink in. All it now takes is a few taps to wipe all trace of a historical communication -- from both your own inbox and the inbox(es) of whoever else you were chatting with (assuming they're running the latest version of Telegram's app).' -- source: https://tech.slashdot.org/story/19/03/25/1641204 Something that WhatsApp could add as well... 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/

2 1

Hackers Hijacked ASUS Software Updates To Install Backdoors on Thousands of Computers
by Peter Reutemann 25 Mar '19

25 Mar '19

'ASUS is believed to have pushed malware to hundreds of thousands of customers through its trusted automatic software update tool after attackers compromised the company's server and used it to push the malware to machines. From a report: Researchers at cybersecurity firm Kaspersky Lab say that ASUS, one of the world's largest computer makers, was used to unwittingly to install a malicious backdoor on thousands of its customers' computers last year after attackers compromised a server for the company's live software update tool. The malicious file was signed with legitimate ASUS digital certificates to make it appear to be an authentic software update from the company, Kaspersky Lab says. ASUS, a multi-billion dollar computer hardware company based in Taiwan that manufactures desktop computers, laptops, mobile phones, smart home systems, and other electronics, was pushing the backdoor to customers for at least five months last year before it was discovered, according to new research from the Moscow-based security firm. The researchers estimate half a million Windows machines received the malicious backdoor through the ASUS update server, although the attackers appear to have been targeting only about 600 of those systems. The malware searched for targeted systems through their unique MAC addresses. Once on a system, if it found one of these targeted addresses, the malware reached out to a command-and-control server the attackers operated, which then installed additional malware on those machines. Kaspersky Lab said it uncovered the attack in January after adding a new supply-chain detection technology to its scanning tool to catch anomalous code fragments hidden in legitimate code or catch code that is hijacking normal operations on a machine. The company plans to release a full technical paper and presentation about the ASUS attack, which it has dubbed ShadowHammer, next month at its Security Analyst Summit in Singapore' -- source: https://yro.slashdot.org/story/19/03/25/144248 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/

1 0

topic for meeting this month?
by Peter Reutemann 24 Mar '19

24 Mar '19

Hi everyone Anyone got a topic that they'd like to present on? Any interesting open-source software that they've come across and would like to demo for a few minutes? Linux distro roundup? 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/

2 3

Two serious WordPress plugin vulnerabilities are being exploited in the wild
by Peter Reutemann 24 Mar '19

24 Mar '19

'Attackers have been actively exploiting serious vulnerabilities in two widely used WordPress plugins to compromise websites that run the extensions on top of the content management system. The two affected plugins are Easy WP SMTP with 300,000 active installations and Social Warfare, which has about 70,000 active installations. While developers have released patches for both exploited flaws, download figures indicate many vulnerable websites have yet to install the fixes. Figures for Easy WP SMTP, which was fixed five days ago, show the plugin has just short of 135,000 downloads in the past seven days. Figures for Social Warfare show it has been downloaded fewer than 20,000 times since a patch was published on WordPress on Friday. Sites that use either plugin should disable them immediately and then ensure they have been updated to version 1.3.9.1 of Easy WP SMTP and 3.5.3 of Social Warfare.' -- source: https://arstechnica.com/information-technology/2019/03/two-serious-wordpres… 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/

1 0

Stallman Suggests Install Fest 'Deals With Devil' Include Actual Man Dressed As Devil
by Peter Reutemann 24 Mar '19

24 Mar '19

'This weekend's annual LibrePlanet conference, hosted by the Free Software Foundation, prompted a new essay about "install fests" from Richard Stallman: Install fests invite users to bring their computers so that experts can install GNU/Linux on them... The problem is that most computers can't run with a completely free GNU/Linux distro. They contain peripherals, or coprocessors, that won't operate unless the installed system contains some nonfree drivers or firmware... This presents the install fest with a dilemma. If it upholds the ideals of freedom, by installing only free software from 100%-free distros, partly-secret machines won't become entirely functional and the users that bring them will go away disappointed. However, if the install fest installs nonfree distros and nonfree software which make machines entirely function, it will fail to teach users to say no for freedom's sake. They may learn to like GNU/Linux, but they won't learn what the free software movement stands for.... In effect, the install fest makes the deal with the devil, on the user's behalf, behind a curtain so the user doesn't recognize that it is one. I propose that the install fest show users exactly what deal they are making. Let them talk with the devil individually, learn the deal's bad implications, then make a deal -- or refuse! As always, I call on the install fest itself to install only free software, taking a strict stance. In this way it can set a clear moral example of rejecting nonfree software. My new idea is that the install fest could allow the devil to hang around, off in a corner of the hall, or the next room. (Actually, a human being wearing a sign saying "The Devil," and maybe a toy mask or horns.) The devil would offer to install nonfree drivers in the user's machine to make more parts of the computer function, explaining to the user that the cost of this is using a nonfree (unjust) program... Those users that get nonfree drivers would see what their moral cost is, and that there are people in the community who refuse to pay that cost. They would have the chance to reflect afterwards on the situation that their flawed computers have put them in, and about how to change that situation, in the small and in the large. Stallman adds that the Free Software Foundation itself would never let a devil near its events. "But given the fact that most install fests quietly play the role of the devil, I think that an explicit devil would be less bad. "It would convert the install-fest dilemma from a debilitating contradiction into a teaching experience."' -- source: https://news.slashdot.org/story/19/03/23/1624242 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/

1 0

Google Play Store Mistakenly Removed KDE Connect
by Peter Reutemann 24 Mar '19

24 Mar '19

'Google's Play Store made a bad mistake on Tuesday, long-time Slashdot reader sombragris writes: KDE Connect, a project designed to enable seamless communcation and control between a desktop computer and a mobile phone, was suddenly removed from Android's Google Play store. According to a Twitter thread by Albert Vaca, KDE Connect's maintainer, the removal was allegedly because the app was in breach of Google's new SMS policy. There's an exemption which applies to KDE Connect, but the maintainer was unable to contact anyone at Google to provide support. "There is simply no way to talk to a human being at @Google", he said. Cintora also announced on Twitter that while trying to comply with the Play Store's new policy, he'd initially been stopped again by technical problems. "The @GooglePlay console gives me an internal error, so I can't upload the version without SMS support." But on Thursday Cintora tweeted that KDE Connect "finally got approved, and SMS support is back in version 1.12.4, both on the Play Store and F-Droid!" Cintora credits this resolution partly to his Twitter thread, which got over half a million impressions. Its last tweet now features a picture of a celebrating parrot.' -- source: https://tech.slashdot.org/story/19/03/23/1852220 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/

1 0

Share Buybacks
by Lawrence D'Oliveiro 23 Mar '19

23 Mar '19

Seems that Oracle has been buying back its own shares to keep its share price high <https://www.theregister.co.uk/2019/03/22/oracle_buyback_programme/>. On its own, this is not automatically a bad thing. I remember reading about a conversation between Steve Jobs and Warren Buffett some years ago, along the lines of: WB: You think your company shares are undervalued? SJ: Yes. WB: You have plenty of spare cash on hand? SJ: Yes. WB: Then use some of that cash to buy back some of your own shares. If you can spend 80¢ and get a dollar, why wouldn’t you? However, the warning sign in the above article is this: The overall effect is that Oracle is now in a net debt position for the first time since 2008, the Wall Street Journal reported this week. In other words, it seems to be borrowing in order to boost its share price. This might not end well ...

2 1

Tor-Powered Tails 3.13 Anonymous Linux OS Adds Extra Security and Latest Updates
by Peter Reutemann 21 Mar '19

21 Mar '19

'Powered by the Linux 4.19.28 kernel, the Tails 3.13 operating system is now available with latest TOR technologies to help you stay hidden while surfing the Internet, including the Tor Browser 8.0.7 anonymous web browser and Tor 0.3.5.8 client and server for the anonymous Tor network. However, probably the most important addition in the Tails 3.13 release is the updated Intel microcode to version 3.20180807a.2, which adds an extra security measure against more variants of the well-known Spectre, Meltdown, and L1TF (Level 1 Terminal Fault) security vulnerabilities. Furthermore, Tails 3.13 updates the Mozilla Thunderbird email and news client to version 65.1.0, adds support for the Bopomofo input method and improves support for the Pinyin input method for Chinese users, and implements automatic backup of the persistent storage's configuration whenever a change occurs.' -- source: https://news.softpedia.com/news/tor-powered-tails-3-13-ethical-hacking-linu… 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/

1 0