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harald@hub.volse.no
Harald Eilertsen

I recommend anyone who wants a solid intro to finding and exploiting weaknesses in C and C++ code to check out the training from @Patricia@social.vivaldi.net at NDC-security in Oslo in January!

#infosec #training #NDC #C++ #C

Image/photoPatricia Aas 🐢​ wrote the following post Tue, 29 Nov 2022 15:53:32 +0100

I’ve adjusted my training to be targeted towards security professionals who want hands-on experience with binary exploitation and vulnerabilities.

Premiering at NDC Security, January 2023

(In)Secure C++: Sec Edition

https://ndc-security.com/workshops/in-secure-cpp-sec-edition/91f417ab387b

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harald@hub.volse.no
Harald Eilertsen

Java theory and practice: Urban performance legends, revisited

The Java language is the target of a lot of abuse for performance. And while some of it may well be deserved, a tour of message board and newsgroup postings on the subject shows that there is a great deal of misunderstanding about how a Java Virtual Machine (JVM) actually works. In this month's Java theory and practice, Brian Goetz pokes some holes in the oft-repeated performance myth of slow allocation in JVMs.

Old article, but quite an interesting read about the performance of memory management (and Garbage Collection in general) in the JVM compared to traditional, manual memory management as in C and C++.

#programing #memory-management #java #c++

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canoodle@nerdpol.ch
SilouettE

Rust vs Go - Open Source is about enabling users - Rust lang will complement C around the GNU Linux Kernel (for better safety) "Amazon, Microsoft, Google" and the White House, want to make Open Source more secure

Open Source is about enabling users "Amazon, Microsoft, Google" and the White House, want to help make Open Source more secure... [caption id="attachment_26251" align="alignnone" width="430"] https://www.youtube.com/watch?v=U-8KopUKMzA\[/caption\] https://www.golem.de/news/openssf-150-millionen-us-dollar-sollen-open-source-absichern-2205-165382.html https://www.golem.de/news/openssf-linux-foundation-will-security-praxis-vereinheitlichen-2008-150036.html src of src: "White House OSS Mobilization Plan" 2022: https://openssf.org/blog/2022/05/11/testimony-to-the-us-house-committee-on-science-and-technology/ 2020: "The OpenSSF is[...]

#linux #gnu #gnulinux #opensource #administration #sysops #dev #c #development #rust #go #google #security #itsec #cybersec #cybersecurity #kernel #linus #torvalds #mozilla #licence #licencing #patents #patent

Originally posted at: https://dwaves.de/2022/05/16/rust-vs-go-open-source-is-about-enabling-users-rust-lang-will-complement-c-around-the-gnu-linux-kernel-for-better-safety-amazon-microsoft-google-and-the-white-house-want-to-make-open-sour/

canoodle@nerdpol.ch
SilouettE

Rst vs Go - Open Source is about enabling users - Rust lang will complement C around the GNU Linux Kernel (for better safety) "Amazon, Microsoft, Google" and the White House, want to make Open Source more secure

Open Source is about enabling users

“Amazon, Microsoft, Google” and the White House, want to help make Open Source more secure…

https://www.youtube.com/watch?v=U-8KopUKMzA

https://www.youtube.com/watch?v=U-8KopUKMzA

so far so good eh?

How will this exactly play out? What will be the “modi operandi”? (Pentagon & JP Morgan Bank, are interested in making the software supply chain more secure, as the IT of banks (!!!) not very good (say the banks THEMSELVES (that fired a lot of IT staff to save on money))

Just an idea for the govs & big corps with the money:

  • put up a “Open Source” “kickstarter” like website
    • where companies & gov can put up their requirements
    • Open Source developers either accept to tackle those requirements
    • or:
      • post their own projects & investors can allocate their resorces to Open Source
      • ABSOLUTE transparency is critical here, not a “pay to play” “taking power” “taking over” “Open Source” “influencing” sealing deals behind closed doors.

https://en.wikipedia.org/wiki/Star_Trek:_First_Contact

https://en.wikipedia.org/wiki/Star_Trek:_First_Contact

long version:

https://peertube.co.uk/w/jKvQozs7xDqpQvbwQFdKbF

The Star Trek economy: will it ever exist?

Afaik Dutch historian Rutger Bregman confirms in his book “Humankind: A Hopeful History” (BE WARNED: it is a realist’s thriller!), that “the nature” of humans (also under constant development), is as such, that only a small percentage are reckless “psychopaths”,

the majority of mankind rather wants to help each other, than shoot each other.

Rust “second in command” around the GNU Linux Kernel

https://en.wikipedia.org/wiki/Rust_(programming_language)

https://en.wikipedia.org/wiki/Rust_(programming_language)

https://en.wikipedia.org/wiki/Rust_(programming_language)

https://en.wikipedia.org/wiki/Rust_(programming_language)

https://foundation.rust-lang.org/

https://foundation.rust-lang.org/

Because Rust lang promises improvements around cyber/itsecurity (no more buffer over/underruns), it might become “second in command” around the Kernel.

The cons: Rust is more C++ than C, which might be a problem for the (long term) C nerds.

Unless (Linus?) & Greg (or someone else) wants to develop a brand new “C” “2.0” lang + compiler designed around security…

Unless Google wants to change it’s Go lang licence…

…Rust it is.

Is Go (a more C like) alternative?

https://en.wikipedia.org/wiki/Go_(programming_language)

https://en.wikipedia.org/wiki/Go_(programming_language)

(2018: developer Voit wrote a Network driver (GNU Linux kernel module) in Go)

https://www.net.in.tum.de/fileadmin/bibtex/publications/theses/2018-ixy-go.pdf

C ixy vs Go ixy: performance (only) “10% slower then the C implementation under optimal circumstance” (optimal meaning: system’s CPU needs fast single threading)

“One of the biggest problem during development was low-level memory management.”

“Specifically register access has proven itself to be difficult in Go”

“On the other hand we were surprised about the garbage collection.”

“Originally named as the reason why Go is nor suited for systems programming, our analysis has proven otherwise”

“easier to read and does not require much understanding of the language itself in order to understand the code, especially compared to some C constructs like function pointer, pointer casting and other more intricate operations” (src)

the Go lang licencing MumboJumbo:

“Copyright (c) 2009 The Go Authors. All rights reserved.”

“Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

* Neither the name of Google Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

“AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.”

that’s not all… there is more licencing mumbojumbo for all those Free Software Foundation & lawyerzzz:

‘Additional IP Rights Grant (Patents)’

‘”This implementation” means the copyrightable works distributed by Google as part of the Go project.

Google hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section)

patent license to make, have made, use, offer to sell, sell, import, transfer and otherwise run, modify and propagate

the contents of this implementation of Go,

where such license applies only to those patent claims,

both currently owned or controlled by Google and acquired in the future,

licensable by Google that are necessarily infringed by this implementation of Go.

This grant does not include claims that would be infringed only as a consequence of further modification of this implementation.

If you or your agent or exclusive licensee institute or order or agree to the institution of patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that this implementation of Go or any code incorporated within this implementation of Go constitutes direct or contributory patent infringement,

or inducement of patent infringement, then any patent rights granted to you under this License for this implementation of Go shall terminate as of the date such litigation is filed.’

src: https://raw.githubusercontent.com/golang/go/master/PATENTS

While the sources of the Go lang are indeed accessible via github, it’s licence is neither GPL 2.0 nor GPL 3.0 nor Apache licence nor MIT licence and thus questionable if:

  1. Google can be trusted (?)
  2. the Go lang licence is “compact” but (currently) not at all Open Source compatible (not a word about if modifcations are allowed)
  3. why did Google not simply pick a “well known” Open source licence? https://opensource.org/licenses

One fine day, Google might to decide, to change the licence, and from this to:

Next problem: Rust (src here) was started by Mozilla, is used by Mozilla for Firefox, but Mozilla has build up financial dependencies to Google.

(Rust in contrast is licenced under MIT & Apache licence https://www.rust-lang.org/policies/licenses)

While this is all not really: K.I.S.S (the UNIX philosophy of Keep it Super Simple)

No dispair, just do your best.

Sticking to the default?

The problem is that systems designed & “Made in the 1970s” (C compiler, Phones, Mail), were not designed around security (because it was not really a problem in those days).

So…

  • unless Google won’t change the Go lang licence to something Open Source compatible
  • unless Linus & Greg or someone else wants to build a C 2.0 around security, Rust is it.

The Go lang licencing problem is the ZFS Oracle licencing problematic all over again:

https://dwaves.de/2022/01/20/the-most-controversial-filesytem-in-the-known-universe-zfs-so-ext4-is-faster-on-single-disk-systems-btrfs-with-snapshots-but-without-the-zfs-licensing-problems/

In other words: Licences (money) have more than once, instead of enabling developers & users, have hindered developers & users.

Another company that M$ successfully killed by buying it…

Another example how Microsoft successfully made this planet worse:

Ever heared of Video2Brain?

IT WAS AN EXCELLENT learning platform, with high quality video learning courses with…

  • 2000 courses in German
  • 1200 courses in Spanish
  • 1300 courses in French
  • 500 courses in Japanese (as of September 2017)
  • 0 in English? (a bit strange, but this company was from Austria and has focused on the EU market, that might be one reason)

Microsoft bought it up… now it is… dead? MS killed it. #wtf?

Now a high quality Video2Brain Rust videos would be needed (luckily – again – Youtube volunteers are chipping in THANKS! (MS maybe transfer some money to them? eh? thanks!))

PS: so that’s my take, could not ask that question via…

stackoverflow.com and serverfault.com suck and DESPERATELY needs competition

stackoverflow.com and serverfault.com suck and DESPERATELY needs competition

#linux #gnu #gnulinux #opensource #administration #sysops #dev #c #development #rust #go #google #security #itsec #cybersec #cybersecurity #kernel #linus #torvalds #mozilla #licence #licencing #patents #patent

Originally posted at: https://dwaves.de/2022/05/16/rst-vs-go-open-source-is-about-enabling-users-rust-lang-will-complement-c-around-the-gnu-linux-kernel-for-better-safety-amazon-microsoft-google-and-the-white-house-want-to-make-open-sourc/

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