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Linux

Stallman Explains That People Should Say GNU/Linux for Freedom and Equal Mention

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Linux

Dr. Richard Stallman, the Free Software Foundation’s founder, explains naming conventions for Linux/GNU (which most people just call “Linux”)

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Linux Kernel 3.12.8 Is Now Available for Download

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Linux

When compared with the previous maintenance releases, Linux kernel 3.12.8 is a small update that adds some arch updates (ARM, PA-RISC, x86), a couple of networking fixes (IPv4 and IPv6), and several updated drivers, especially for networking.

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Steam OS has that killer app that Ubuntu doesn’t

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Linux
Ubuntu

The first batch of Steam OS powered machines were announced at CES 2014. These machines will serve two purposes – they will redefine the gaming industry by bringing new players, better hardware to break the trinity of Sony, Microsoft and Nintendo which locks everyone else out of the game console market.

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Fedora and CentOS Updates, Linux for Security, and Top Seven

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Linux

Today was another interesting day in the newfeeds, so much so I can't pick just one. There were several headlines focusing on Fedora or CentOS today. Linux.com has posted a top seven distro list for 2014 and Jack Wallen says CESG recommends Linux for security. That's not all either.

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Mentor adds Linux and multicore options for in-car media

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Linux

Mentor Graphics has said it is possible to add user interfaces or HMIs, similar to those seen in consumer electronics devices to in-vehicle dashboards.

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Six free open source CD and or DVD authoring tools for Linux

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Linux

Kdbus Details

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Linux

Now that linux.conf.au is over, there has been a bunch of information running around about the status of kdbus and the integration of it with systemd. So, here’s a short summary of what’s going on at the moment.

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CentOS Project Leader Karanbir Singh Opens Up on Red Hat Deal

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Linux

In the 10 years since the CentOS project was launched there has been no board of directors, or legal team, or commercial backing. The developers who labored to build the community-led version of Red Hat Enterprise Linux (RHEL) worked largely unpaid (though some took a few consulting gigs on the side.) They had a few hundred dollars in their bank account to pay for event t-shirts and that was it. And the project's direction was decided based on the developers' immediate needs, not a grand vision of future technology.

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Linux 3.14 Officializes Broadwell, Deprecates Legacy UMS

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Linux

Daniel Vetter of Intel's Open-Source Technology Center blogged on Wednesday about the major changes queued up for the Linux 3.14 kernel as it concerns their DRM kernel graphics driver. The main changes for Intel DRM in Linux 3.14 include runtime D3 support, wwatermark computation / frame-buffer compression fixes, a rewrite of the low-level backlight code, work on full PPGTT support, Bay Trail Atom improvements, and a kernel option to disable legacy fbdev support.

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Raspberry Pi: 11 reasons why it's the perfect small server

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Linux
Hardware

Recently I've been experimenting with a Raspberry Pi (revision Cool running different GNU/Linux distributions.

Since the Pi is a basically a mini-computer, I decided to take it for a spin and see what I could throw at it, and I have been pleasantly surprised. In fact, it's been so successful that I've decided to try setting it up as a mini server with various services. In doing so, I've come up with a list of advantages that I feel are very compelling.

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Leftovers: BSD

Security Leftovers

  • Stop using SHA1 encryption: It’s now completely unsafe, Google proves
    Security researchers have achieved the first real-world collision attack against the SHA-1 hash function, producing two different PDF files with the same SHA-1 signature. This shows that the algorithm's use for security-sensitive functions should be discontinued as soon as possible. SHA-1 (Secure Hash Algorithm 1) dates back to 1995 and has been known to be vulnerable to theoretical attacks since 2005. The U.S. National Institute of Standards and Technology has banned the use of SHA-1 by U.S. federal agencies since 2010, and digital certificate authorities have not been allowed to issue SHA-1-signed certificates since Jan. 1, 2016, although some exemptions have been made. However, despite these efforts to phase out the use of SHA-1 in some areas, the algorithm is still fairly widely used to validate credit card transactions, electronic documents, email PGP/GPG signatures, open-source software repositories, backups and software updates.
  • on pgp
    First and foremost I have to pay respect to PGP, it was an important weapon in the first cryptowar. It has helped many whistleblowers and dissidents. It is software with quite interesting history, if all the cryptograms could tell... PGP is also deeply misunderstood, it is a highly successful political tool. It was essential in getting crypto out to the people. In my view PGP is not dead, it's just old and misunderstood and needs to be retired in honor. However the world has changed from the internet happy times of the '90s, from a passive adversary to many active ones - with cheap commercially available malware as turn-key-solutions, intrusive apps, malware, NSLs, gag orders, etc.
  • Cloudflare’s Cloudbleed is the worst privacy leak in recent Internet history
    Cloudflare revealed today that, for months, all of its protected websites were potentially leaking private information across the Internet. Specifically, Cloudflare’s reverse proxies were dumping uninitialized memory; that is to say, bleeding private data. The issue, termed Cloudbleed by some (but not its discoverer Tavis Ormandy of Google Project Zero), is the greatest privacy leak of 2017 and the year has just started. For months, since 2016-09-22 by their own admission, CloudFlare has been leaking private information through Cloudbleed. Basically, random data from random sites (again, it’s worth mentioning that every site that used CloudFlare in the last half year should be considered to having fallen victim to this) would be randomly distributed across the open Internet, and then indefinitely cached along the way.
  • Serious Cloudflare bug exposed a potpourri of secret customer data
    Cloudflare, a service that helps optimize the security and performance of more than 5.5 million websites, warned customers today that a recently fixed software bug exposed a range of sensitive information that could have included passwords and cookies and tokens used to authenticate users. A combination of factors made the bug particularly severe. First, the leakage may have been active since September 22, nearly five months before it was discovered, although the greatest period of impact was from February 13 and February 18. Second, some of the highly sensitive data that was leaked was cached by Google and other search engines. The result was that for the entire time the bug was active, hackers had the ability to access the data in real-time by making Web requests to affected websites and to access some of the leaked data later by crafting queries on search engines. "The bug was serious because the leaked memory could contain private information and because it had been cached by search engines," Cloudflare CTO John Graham-Cumming wrote in a blog post published Thursday. "We are disclosing this problem now as we are satisfied that search engine caches have now been cleared of sensitive information. We have also not discovered any evidence of malicious exploits of the bug or other reports of its existence."

Security Leftovers

  • Change all the passwords (again)
    Looks like it is time to change all the passwords again. There’s a tiny little flaw in a CDN used … everywhere, it seems.
  • Today's leading causes of DDoS attacks [Ed: The so-called 'Internet of things' (crappy devices with identical passwords) is a mess; programmers to blame, not Linux]
    Of the most recent mega 100Gbps attacks in the last quarter, most of them were directly attributed to the Mirai botnet. The Mirai botnet works by exploiting the weak security on many Internet of Things (IoT) devices. The program finds its victims by constantly scanning the internet for IoT devices, which use factory default or hard-coded usernames and passwords.
  • How to Set Up An SSL Certificate on Your Website [via "Steps To Secure Your Website With An SSL Certificate"]
  • SHA-1 is dead, long live SHA-1!
    Unless you’ve been living under a rock, you heard that some researchers managed to create a SHA-1 collision. The short story as to why this matters is the whole purpose of a hashing algorithm is to make it impossible to generate collisions on purpose. Unfortunately though impossible things are usually also impossible so in reality we just make sure it’s really really hard to generate a collision. Thanks to Moore’s Law, hard things don’t stay hard forever. This is why MD5 had to go live on a farm out in the country, and we’re not allowed to see it anymore … because it’s having too much fun. SHA-1 will get to join it soon.
  • SHA1 collision via ASCII art
    Happy SHA1 collision day everybody! If you extract the differences between the good.pdf and bad.pdf attached to the paper, you'll find it all comes down to a small ~128 byte chunk of random-looking binary data that varies between the files.
  • PayThink Knowledge is power in fighting new Android attack bot
    Android users and apps have become a major part of payments and financial services, carrying an increased risk for web crime. It is estimated that there are 107.7 million Android Smartphone users in the U.S. who have downloaded more than 65 million apps from the Google App Store, and each one of them represents a smorgasbord of opportunity for hackers to steal user credentials and other information.
  • Red Hat: 'use after free' vulnerability found in Linux kernel's DCCP protocol IPV6 implementation
    Red Hat Product Security has published details of an "important" security vulnerability in the Linux kernel. The IPv6 implementation of the DCCP protocol means that it is possible for a local, unprivileged user to alter kernel memory and escalate their privileges. Known as the "use-after-free" flaw, CVE-2017-6074 affects a number of Red Hat products including Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 and Red Hat Openshift Online v2. Mitigating factors include the requirement for a potential attacker to have access to a local account on a machine, and for IPV6 to be enabled, but it is still something that will be of concern to Linux users. Describing the vulnerability, Red Hat says: "This flaw allows an attacker with an account on the local system to potentially elevate privileges. This class of flaw is commonly referred to as UAF (Use After Free.) Flaws of this nature are generally exploited by exercising a code path that accesses memory via a pointer that no longer references an in use allocation due to an earlier free() operation. In this specific issue, the flaw exists in the DCCP networking code and can be reached by a malicious actor with sufficient access to initiate a DCCP network connection on any local interface. Successful exploitation may result in crashing of the host kernel, potential execution of code in the context of the host kernel or other escalation of privilege by modifying kernel memory structures."

Android Leftovers