- wlug - list.wlug.org.nz

Is Your HDMI Cable Streaming-Compatible?
by Lawrence D'Oliveiro 20 Aug '19

20 Aug '19

It seems <https://www.stuff.co.nz/sport/rugby/rugby-world-cup/115128021/rugby-world-c…> that some people hoping to watch streams of the Rugby World Cup on a TV or external monitor connected via an HDMI cable from their PC may be out of luck. If the client software thinks you’re trying to record the stream, it will block it. And some cables will trigger this block, even if they’re just connecting to a monitor.

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New Attack exploiting serious Bluetooth weakness can intercept sensitive data
by Peter Reutemann 20 Aug '19

20 Aug '19

'Researchers have demonstrated a serious weakness in the Bluetooth wireless standard that could allow hackers to intercept keystrokes, address books, and other sensitive data sent from billions of devices. Dubbed Key Negotiation of Bluetooth—or KNOB for short—the attack forces two or more devices to choose an encryption key just a single byte in length before establishing a Bluetooth connection. Attackers within radio range can then use commodity hardware to quickly crack the key. From there, attackers can use the cracked key to decrypt data passing between the devices. The types of data susceptible could include keystrokes passing between a wireless keyboard and computer, address books uploaded from a phone to a car dashboard, or photographs exchanged between phones. KNOB doesn't require an attacker to have any previously shared secret material or to observe the pairing process of the targeted devices. The exploit is invisible to Bluetooth apps and the operating systems they run on, making the attack almost impossible to detect without highly specialized equipment. KNOB also exploits a weakness in the Bluetooth standard itself. That means, in all likelihood, that the vulnerability affects just about every device that's compliant with the specification. The researchers have simulated the attack on 14 different Bluetooth chips—including those from Broadcom, Apple, and Qualcomm—and found all of them to be vulnerable. "The Key Negotiation Of Bluetooth (KNOB) attack exploits a vulnerability at the architectural level of Bluetooth," the researchers wrote in a research paper published this week. "The vulnerable encryption key negotiation protocol endangers potentially all standard compliant Bluetooth devices, regardless [of] their Bluetooth version number and implementation details. We believe that the encryption key negotiation protocol has to be fixed as soon as possible."' -- source: https://arstechnica.com/information-technology/2019/08/new-attack-exploitin… 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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Should HTTPS Certificates Expire After Just 397 Days?
by Peter Reutemann 19 Aug '19

19 Aug '19

'Google has made a proposal to the unofficial cert industry group that "would cut lifespan of SSL certificates from 825 days to 397 days," reports ZDNet. No vote was held on the proposal; however, most browser vendors expressed their support for the new SSL certificate lifespan. On the other side, certificate authorities were not too happy, to say the least. In the last decade and a half, browser makers have chipped away at the lifespan of SSL certificates, cutting it down from eight years to five, then to three, and then to two. The last change occured in March 2018, when browser makers tried to reduce SSL certificate lifespans from three years to one, but compromised for two years after pushback from certificate authorities. Now, barely two years later after the last change, certificate authorities feel bullied by browser makers into accepting their original plan, regardless of the 2018 vote... This fight between CAs and browser makers has been happening in the shadows for years. As HashedOut, a blog dedicated to HTTPS-related news, points out, this proposal is much more about proving who controls the HTTPS landscape than everything. "If the CAs vote this measure down, there's a chance the browsers could act unilaterally and just force the change anyway," HashedOut said. "That's not without precendent, but it's also never happened on an issue that is traditionally as collegial as this. "If it does, it becomes fair to ask what the point of the CA/B Forum even is. Because at that point the browsers would basically be ruling by decree and the entire exercise would just be a farce." Security researcher Scott Helme "claims that this process is broken and that bad SSL certificates continue to live on for years after being mississued and revoked -- hence the reason he argued way back in early 2018 that a shorter lifespan for SSL certificates would fix this problem because bad SSL certs would be phased out faster." But the article also notes that Timothy Hollebeek, DigiCert's representative at the CA/B Forum argues that the proposed change "has absolutely no effect on malicious websites, which operate for very short time periods, from a few days to a week or two at most. After that, the domain has been added to various blacklists, and the attacker moves on to a new domain and acquires new certificates."' -- source: https://tech.slashdot.org/story/19/08/18/1833223 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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Intel Patches Three High-Severity Vulnerabilities
by Peter Reutemann 18 Aug '19

18 Aug '19

'Intel's latest patches "stomped out three high-severity vulnerabilities and five medium-severity flaws," reports Threatpost: One of the more serious vulnerabilities exist in the Intel Processor Identification Utility for Windows, free software that users can install on their Windows machines to identify the actual specification of their processors. The flaw (CVE-2019-11163) has a score of 8.2 out of 10 on the CVSS scale, making it high severity. It stems from insufficient access control in a hardware abstraction driver for the software, versions earlier than 6.1.0731. This glitch "may allow an authenticated user to potentially enable escalation of privilege, denial of service or information disclosure via local access" according to Intel. Users are urged to update to version 6.1.0731. Intel stomped out another high-severity vulnerability in its Computing Improvement Program, which is program that Intel users can opt into that uses information about participants' computer performance to make product improvement and detect issues. However, the program contains a flaw (CVE-2019-11162) in the hardware abstraction of the SEMA driver that could allow escalation of privilege, denial of service or information disclosure... A final high-severity flaw was discovered in the system firmware of the Intel NUC (short for Next Unit of Computing), a mini-PC kit used for gaming, digital signage and more. The flaw (CVE-2019-11140) with a CVSS score of 7.5 out of 10, stems from insufficient session validation in system firmware of the NUC. This could enable a user to potentially enable escalation of privilege, denial of service and information disclosure. An exploit of the flaw would come with drawbacks -- a bad actor would need existing privileges and local access to the victim system. The article notes that the patches "come on the heels of a new type of side-channel attack revealed last week impacting millions of newer Intel microprocessors manufactured after 2012."' -- source: https://it.slashdot.org/story/19/08/18/0030201 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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Slackware, the Longest Active Linux Distro, Finally Has a Patreon Page
by Peter Reutemann 18 Aug '19

18 Aug '19

'"Slackware is the longest active Linux distribution project, founded in 1993," writes TheBAFH (Slashdot reader #68,624). "Today there are many Linux distributions available, but I've remained dedicated to this project as I believe it still holds an important place in the Linux ecosystem," writes Patrick J. Volkerding on a new Patreon page. He adds that Slackware's users "know that Slackware can be trusted not to constantly change the way things work, so that your investment in learning Slackware lasts longer than it would with a system that's a moving target... Your support is greatly appreciated, and will make it possible for me to continue to maintain this project." TheBAFH writes: The authenticity of the Patreon page has been confirmed by Mr. Volkerding in a post in the Slackware forum of LinuxQuestions.org. "I was going to wait to announce it until I had a few more planned updates done in -current that would be getting things closer to an initial 15.0 beta release, but since it's been spotted in the wild I'll confirm it." Slashdot also emailed Patrick J. Volkerding at Slackware.com last summer and confirmed that that is indeed the account that he's posting from on LinuxQuestions. At the time, he was still trying to find the time to get a Patreon page set up. "I've been trying to catch up on nearly a decade of neglecting everything other than Slackware, but I'm at least getting more caught up."' -- source: https://linux.slashdot.org/story/19/08/16/238254 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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Unique Kaspersky AV User ID Allowed 3rd-Party Web Tracking
by Peter Reutemann 15 Aug '19

15 Aug '19

'Kaspersky antivirus solutions injected in the web pages visited by its users an identification number unique for each system. This started in late 2015 and could be used to track a user's browsing interests. From a report: Versions of the antivirus product, paid and free, up to 2019, displayed this behavior that allows tracking regardless of the web browser used, even when users started private sessions. Signaled by c't magazine editor Ronald Eikenberg, the problem was that a JavaScript from a Kaspersky server loaded from an address that included a unique ID for every user. Scripts on a website can read the HTML source and glean the Kaspersky identifier, which Eikenberg determined to remain unchanged on the system.' -- source: https://it.slashdot.org/story/19/08/15/1849235 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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Researchers Found World-Readable Database Used To Secure Buildings Around the Globe
by Peter Reutemann 15 Aug '19

15 Aug '19

'Researchers said they have found a publicly accessible database containing almost 28 million records -- including plain-text passwords, face photos, and personal information -- that was used to secure buildings around the world. Ars Technica reports: Researchers from vpnMentor reported on Wednesday that the database was used by the Web-based Biostar 2 security system sold by South Korea-based Suprema. Biostar uses facial recognition and fingerprint scans to identify people authorized to enter warehouses, municipal buildings, businesses, and banks. vpnMentor said the system has more than 1.5 million installations in a wide range of countries including the U.S., the UK, Indonesia, India, and Sri Lanka. According to vpnMentor, the 23-gigabyte database contained more than 27.8 million records used by Biostar to secure customer facilities. The data included usernames, passwords and user IDs in plaintext, building access logs, employee records including start dates, personal details, mobile device data, and face images. The researchers said the data also included more than 1 million records containing actual fingerprint scans, but the report provided no data to support the claim. "The vpnMentor researchers said they discovered the exposed database on August 5 and privately reported the finding two days later," reports Ars Technica. "The data wasn't secured until Tuesday, six days later."' -- source: https://it.slashdot.org/story/19/08/14/2256231 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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Quote Of The Week
by Lawrence D'Oliveiro 15 Aug '19

15 Aug '19

Well, my nomination, anyway <https://forums.theregister.co.uk/forum/all/2019/08/13/windows_notepad_flaw/…>: ... looking at XP era material with a code profiler is like looking at a Vegas motel room under a strong blacklight. Some things cannot be unseen.

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Tech firms “can and must” put backdoors in encryption, AG Barr says
by Peter Reutemann 15 Aug '19

15 Aug '19

'US Attorney General William Barr today launched a new front in the feds' ongoing fight against consumer encryption, railing against the common security practice and lamenting the "victims" in its wake. "The deployment of warrant-proof encryption is already imposing huge costs on society," Barr claimed in remarks at a cybersecurity conference held at Fordham University Tuesday morning. Barr added that encryption "seriously degrades" law enforcement's ability to "detect and prevent a crime before it occurs," as well as making eventual investigation and prosecution of crime more difficult. The existence of encryption means "converting the Internet and communications into a law-free zone" that criminals will happily take advantage of to do more crimes, Barr added, likening it to a neighborhood that local cops have abandoned. The cost of encryption, he said, is measured in "victims" who might have been saved from crime if law enforcement had been able to lawfully intercept communications earlier. He also accused tech firms of "dogmatic" posturing, saying lawful backdoor access "can be and must be" done, adding, "We are confident that there are technical solutions that will allow lawful access to encrypted data and communications by law enforcement, without materially weakening the security provided by encryption."' -- source: https://arstechnica.com/tech-policy/2019/07/tech-firms-can-and-must-put-bac… 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 Makes Legit-Looking iPhone Lightning Cables That Will Hijack Your Computer
by Peter Reutemann 14 Aug '19

14 Aug '19

'A researcher known as MG has modified Lightning cables with extra components to let him remotely connect to the computers that the cables are connected to. "It looks like a legitimate cable and works just like one. Not even your computer will notice a difference. Until I, as an attacker, wirelessly take control of the cable," MG said. Motherboard reports: One idea is to take this malicious tool, dubbed O.MG Cable, and swap it for a target's legitimate one. MG suggested you may even give the malicious version as a gift to the target -- the cables even come with some of the correct little pieces of packaging holding them together. MG typed in the IP address of the fake cable on his own phone's browser, and was presented with a list of options, such as opening a terminal on my Mac. From here, a hacker can run all sorts of tools on the victim's computer. The cable comes with various payloads, or scripts and commands that an attacker can run on the victim's machine. A hacker can also remotely "kill" the USB implant, hopefully hiding some evidence of its use or existence. MG made the cables by hand, painstakingly modifying real Apple cables to include the implant. "In the end, I was able to create 100 percent of the implant in my kitchen and then integrate it into a cable. And these prototypes at Def con were mostly done the same way," he said. MG did point to other researchers who worked on the implant and graphical user interface. He is selling the cables for $200 each. ' -- source: https://apple.slashdot.org/story/19/08/13/2240213 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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