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Security

Pascutto: Linux sandboxing improvements in Firefox 60

Gian-Carlo Pascutto posts about the sandboxing improvements in the Firefox 60 release. "The most important change is that content processes — which render Web pages and execute JavaScript — are no longer allowed to directly connect to the Internet, or connect to most local services accessed with Unix-domain sockets (for example, PulseAudio)."

Comments (7 posted)

Serious vulnerabilities with OpenPGP and S/MIME

The efail.de site describes a set of vulnerabilities in the implementation of PGP and MIME that can cause the disclosure of encrypted communications, including old messages. "In a nutshell, EFAIL abuses active content of HTML emails, for example externally loaded images or styles, to exfiltrate plaintext through requested URLs."

The EFF recommends uninstalling email-encryption tools that automatically decrypt email entirely. "Until the flaws described in the paper are more widely understood and fixed, users should arrange for the use of alternative end-to-end secure channels, such as Signal, and temporarily stop sending and especially reading PGP-encrypted email."

Comments (22 posted)

Security quotes of the week

In an ideal world, schools should be actively preparing pupils to be empowered citizens in a digital world that is increasingly riddled with exploitative and coercive systems. Instead, the [UK] government is forcing schools to collect data that are then sold or given to firms that exploit it, with no meaningful consent. There is not even the normal right to request subject access [so] you can check whether the information about you is right and have it corrected if it's wrong.
Ross Anderson

Securus Technologies markets a product to law enforcement that taps into realtime cell-tower data from mobile carriers to produce fine-grained location tracking of anyone carrying a phone; it is nominally marketed to find parolees and wandering Alzheimer's patients, but because it has no checks or balances, cops can query it willy-nilly to find anyone's location.

That's what, Cory Hutcheson, ex-Sheriff of Mississippi County, MO, is accused of doing; prosecutors say that for three years, Hutcheson abused Securus's system to track all kinds of people -- even a local judge -- without a warrant.

Securus claims that it restricts the use of its system to legally permitted surveillance, requiring users to upload warrants or court orders prior to use; but it does not vet or review those orders before granting access. Securus also does not make the alleged court orders visible to carriers before it queries their databases, meaning that the phone companies have to take Securus's word for it.

The carriers, meanwhile, are exploiting a loophole in privacy laws that nominally prohibit selling this kind of data: by burying "consent" to the sale of your location data in their lengthy, never-read agreements, the carriers are able to circumvent the law; primarily to sell your data to marketers, but also to surveillance companies like Securus.

Cory Doctorow

A hacker has broken into the servers of Securus, a company that allows law enforcement to easily track nearly any phone across the country, and which a US Senator has exhorted federal authorities to investigate. The hacker has provided some of the stolen data to Motherboard, including usernames and poorly secured passwords for thousands of Securus' law enforcement customers.

Although it's not clear how many of these customers are using Securus's phone geolocation service, the news still signals the incredibly lax security of a company that is granting law enforcement exceptional power to surveill individuals.

Joseph Cox in Motherboard

Security is never something we actually want. Security is something we need in order to avoid what we don't want. It's also more abstract, concerned with hypothetical future possibilities. Of course it's lower on the priorities list than fundraising and press coverage. They're more tangible, and they're more immediate.

This is all to the attackers' advantage.

Bruce Schneier reacts to a report on election security

Comments (5 posted)

Kernel development

Kernel release status

The current development kernel is 4.17-rc5, released on May 13. Linus said: "So I think we're in pretty good shape. Please go keep testing, though, to make sure we're not missing anything."

Stable updates: 4.16.9, 4.14.41, 4.9.100, 4.4.132, and 3.18.109 were released on May 16.

Comments (none posted)

Distributions

Canonical on trust and security in the Snap Store

Here's a posting from Canonical concerning the cryptocurrency-mining app that was discovered in its Snap Store. "Several years ago when we started the work on snap packages, we understood that we could not instantly implement an alternative that was completely safe from all perspectives. In addition to being safe, it had to be useful. So the challenge we gave ourselves was to significantly improve the situation immediately, and then pave the road for incremental improvements that could be rolled out gradually."

Comments (14 posted)

Distribution quotes of the week

These numbers are so inaccurate it's not really worth it to bother: should a DD who hasn't made an upload in ten years be counted? Should a non-DD non-DM contributor who maintains 86 packages for one and half decades? Then, don't forget that a good part of the credit should go to upstreams who actually wrote the software. And so on.

Thus, saying that Debian is produced "by almost a thousand active developers" is the most accurate figure we can honestly give.

Adam Borowski

So while the use cases you mention should be taken into consideration, I don't believe they support the conclusion that we should continue to release Ubuntu on i386 in future releases.

[This] is a cost largely paid by Canonical (both in terms of infrastructure, and in terms of engineering work to keep the base system working). It's not very compelling to say that Canonical should continue bearing these costs out of pocket on the grounds that some other companies are unwilling to update their software to an ISA from this millennium :)

Steve Langasek

Unfortunately, if we all stop using small distros five years from now there will likely be no brilliant new up-and-comers.
Scott Gilbertson

For people who want to insist that Linux is not Unix; that's fine. I usually like to yank their chain by saying, tongue in cheek, that sure, Linux is not Unix, but it is largely compatible with Legacy Unix systems. :-)
Ted Ts'o

Comments (6 posted)

Development

Announcing Rust 1.26

The Rust team has announced the release of version 1.26.0 of the Rust programming language. "The past few releases have had a steady stream of relatively minor additions. We’ve been working on a lot of stuff, however, and it’s all starting to land in stable. 1.26 is possibly the most feature-packed release since Rust 1.0."

Comments (none posted)

Hutterer: X server pointer acceleration analysis

For those who are curious about the rather complex way in which X server pointer acceleration works, Peter Hutterer has put together a four-part series on the topic: part 1, part 2, part 3, and part 4. "The input for the acceleration profile is a speed in mickeys, a threshold (in mickeys) and a max accel factor (unitless). Mickeys are a bit tricky. This means the acceleration is device-specific, the deltas for a mouse at 1000 dpi are 20% larger than the deltas for a mouse at 800 dpi (assuming same physical distance and speed)".

Comments (3 posted)

Development quote of the week

While Wayland is certainly making great strides, I don't think the world is yet ready to stop using X altogether, but it's getting harder and harder for us to keep X alive.
Alan Coopersmith

Comments (none posted)

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