Synthetic Memory Protections - An update on ROP mitigations
https://www.openbsd.org/papers/csw2023.pdf [www.openbsd.org]
2023-03-25 19:35
tags:
cpu
defense
malloc
openbsd
pdf
security
slides
systems
ROP methods have become increasingly sophisticated
But we can identify system behaviours which only ROP code requires
We can contrast this to what Regular Control Flow code needs
And then, find behaviours to block
source: HN
OpenBSD 6.7
https://www.openbsd.org/67.html [www.openbsd.org]
2020-05-19 18:10
tags:
openbsd
release
Removed the dpt(4) driver for DPT EATA SCSI RAID.
Game of Trees
https://www.openbsd.org/papers/eurobsdcon2019-gameoftrees.pdf [www.openbsd.org]
2019-09-27 19:48
tags:
beta
development
git
openbsd
pdf
slides
swtools
Game of Trees is a work-in-progress version control system which attempts to be appealing to OpenBSD developers.
https://gameoftrees.org/
A 3 line diff
https://www.openbsd.org/lyrics.html#62 [www.openbsd.org]
2018-12-19 21:06
tags:
audio
development
music
openbsd
Unfortunately, in software development not all problems are as trivial as we think.
OpenBSD 6.4
https://www.openbsd.org/64.html [www.openbsd.org]
2018-10-18 17:01
tags:
openbsd
release
RWQq6XmS4eDAcQW4KsT5Ka0KwTQp2JMOP9V/DR4HTVOL5Bc0D7LeuPwA
OpenBSD EuroBSDcon 2018
https://www.openbsd.org/events.html#eurobsdcon2018 [www.openbsd.org]
2018-09-26 18:27
tags:
defense
development
openbsd
security
slides
Marc Espie, Advances in OpenBSD packages: https is a lie (slides)
Kristaps Džonsons, OpenBSD and Diving (slides)
Ingo Schwarze, Better documentation - on the web and for LibreSSL (slides, source)
Bob Beck, Unveil in OpenBSD (slides)
Todd Mortimer, Removing ROP Gadgets from OpenBSD (slides)
Bob Beck, LibTLS Tutorial for TLS beginners (tutorial)
Peter Hessler, Introduction to BGP for developers and sysadmins
Fuzzing the OpenBSD Kernel
https://www.openbsd.org/papers/fuzz-slides.pdf [www.openbsd.org]
2018-09-06 19:35
tags:
fuzzing
openbsd
pdf
slides
systems
Fuzzing the OpenBSD kernel using the syzkaller kernel fuzzer.
kcov(4)
A driver for tracking kernel code coverage.
Enabled on a per thread basis.
The kernel program counter is tracked during syscalls made by the same thread.
Not a strict requirement for syzkaller but improves its ability to generate interesting programs.
Pledge, and Unveil, in OpenBSD
https://www.openbsd.org/papers/BeckPledgeUnveilBSDCan2018.pdf [www.openbsd.org]
2018-06-11 09:58
tags:
defense
fs
openbsd
pdf
security
slides
Unveiling a directory unveils everything underneath it in the filesystem
source: L
OpenBSD vmm/vmd Update
https://www.openbsd.org/papers/asiabsdcon2018-vmm-slides.pdf [www.openbsd.org]
2018-03-09 18:11
tags:
openbsd
pdf
slides
update
virtualization
New guests, better hardware emulation, send and receive, etc.
source: L
OpenBSD 6.2
http://www.openbsd.org/62.html [www.openbsd.org]
2017-10-10 02:35
tags:
openbsd
release
Make sure you use a properly formatted floppy with NO BAD BLOCKS or your install will most likely fail.
OpenBSD talks at EuroBSDcon 2017
http://www.openbsd.org/events.html#eurobsd2017 [www.openbsd.org]
2017-09-26 18:27
tags:
archive
openbsd
slides
systems
Slides posted.
Antoine Jacoutot and Baptiste Daroussin, My BSD sucks less than yours (paper, slides)
Theo de Raadt, Pledge and Privsep
Marc Espie, “Is it done yet ?” The never ending story of pkg tools
Jasper Lievisse Adriaanse, OpenBSD’s small steps towards DTrace (a tale about DDB and CTF)
Gilles Chehade, OpenSMTPD, current state of affairs
Martin Pieuchot, Your scheduler is not the problem
Alexander Bluhm, Never Lose a Syslog Message
Landry Breuil, 7 years of maintaining firefox
Stefan Sperling, Getting started with OpenBSD device driver development
OpenBSD 6.1
https://www.openbsd.org/61.html [www.openbsd.org]
2017-04-12 15:03
tags:
openbsd
release
Lots of work for arm64 ports, among many other changes.
OpenBSD vmm/vmd Update
https://www.openbsd.org/papers/asiabsdcon2017-vmm-slides.pdf [www.openbsd.org]
2017-03-13 17:18
tags:
openbsd
pdf
slides
update
virtualization
Better CPU support, better guest support, better configuration.
source: L
libtls: rethinking the TLS/SSL API
http://www.openbsd.org/papers/linuxconfau2017-libtls/ [www.openbsd.org]
2017-01-22 07:29
tags:
library
networking
openbsd
programming
security
slides
ux
video