The Internet Security Research Group and partners have announced that Claudio Jeker (claudio@) is the third Radiant Award recipient. From the announcement:

We’re excited to announce the third Radiant Award recipient, Claudio Jeker.

When we at ISRG think about the greatest threats to Web security today, the lack of Border Gateway Protocol (BGP) security might top our list. Claudio's passion for networking, his focus on security, and his talent as a software developer are enabling him to make great contributions to fixing this and other Web security problems. In particular, he is making great contributions to OpenBSD and OpenBGPD.

Congratulations Claudio!

Alexandr Nedvedicky (sashan@) wrote to tech@ regarding a recent significant change:

Hello,

commit from today [1] makes IP stack more paranoid. Up to now OpenBSD
implemented so called 'weak host model' [2]. The today's commit alters
that for hosts, which don't forward packets (don't act as routers).

Your laptops, desktops and servers now check packet destination address
with IP address bound to interface, where such packet is received on.
If there will be mismatch the packet will be discarded and 'wrongif'
counter will be bumped. You can use 'netstat -s|grep wrongif' to
display the counter value.

It is understood the behavior, which has been settled in IP stack since 80's,
got changed. tech@openbsd.org (or bugs@openbsd.org) wants to hear back from you,
if this change breaks your existing set up. There is a common believe this
change won't hurt majority (> 97%) users, though there is some non-zero risk,
hence this announcement is being sent.

thanks and
regards
sashan

[1] https://marc.info/?l=openbsd-cvs&m=157580332113635&w=2

[2] https://en.wikipedia.org/wiki/Host_model

Fresh from the just concluded e2k19 hackathon, Claudio Jeker (claudio@) writes in:

After 2 years it was once again time to pack skis and snowshoes, put a satellite dish onto a sledge and hike through the snowy rockies to the Elk Lakes hut.

Theo de Raadt (deraadt@) has committed code for a new exploit-prevention mechanism:

[…]
Repurpose the "syscalls must be on a writeable page" mechanism to
enforce a new policy: system calls must be in pre-registered regions.
We have discussed more strict checks than this, but none satisfy the
cost/benefit based upon our understanding of attack methods, anyways
let's see what the next iteration looks like.

This is intended to harden (translation: attackers must put extra
effort into attacking) against a mixture of W^X failures and JIT bugs
which allow syscall misinterpretation, especially in environments with
polymorphic-instruction/variable-sized instructions.  It fits in a bit
with libc/libcrypto/ld.so random relink on boot and no-restart-at-crash
behaviour, particularily for remote problems. Less effective once on-host
since someone the libraries can be read.
[…]

The full commit details are well worth reading, as is the manual page for the (new) msyscall(2), and some associated discussion on tech@.

As this change involves ABI breakage, upgrading via snapshots is the easiest way to avoid trouble.

Florian Obser (florian@) has committed code to give unwind(8) a flexible approach to resolving strategies:

Modified files:
	sbin/unwind    : resolver.c resolver.h 
	usr.sbin/unwindctl: unwindctl.c 

Log message:
Instead of only considering if a resolving strategy is dead, works or
validates, measure how well it is doing.

Next up in our hackathon series from p2k19 is one from Stefan Sperling (stsp@), who writes:

My main goal for the p2k19 hackathon was 9260 device support in iwm(4). Firmware updates for previous device generation were an important prerequisite step. One day before p2k19, the oldest generation of hardware supported by the iwm(4) driver was switched to latest available firmware images.

Next up in the series of p2k19 reports is Ken Westerback (krw@), who writes:

tl;dr - Great City, Great Coffee, Great Hacking. I already miss Bucharest.

Our next p2k19 report comes from Jeremy Evans (jeremy@):

While I had originally planned to attend the entire hackathon, circumstances changed and I was only able to make it there for a few days. Still, I was able to get some work done.

Fresh from the just concluded p2k19 hackathon comes this report from Landry breuil (landry@), who writes:

This year having been a bit hectic with work and house renovation, i was really planning to enjoy bucarest as the first real break of the year.. and it definitely was a blast.