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trench
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polarian
There was an openssh MITM patch today, although I do not see any security advisory on it freebsd side, does this not affect freebsd or is it pending?
freebsd.org/security/advisories
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mason
scoobybejesus: Nice, glad you nailed it down. :)
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mason
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polarian
mason: OpenSSH_9.7p1, OpenSSL 3.0.13 30 Jan 2024
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polarian
This does not contain the MITM patch afaik
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ketas
i read that announcd
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ketas
seems nonaffective
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ketas
as i get it
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ketas
non default configs
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TommyC
One specific option that is changed from the default configs. No need to panic if you don't run sshd on port 22. :3
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ketas
why would !22 matter?
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ketas
because usually it don't get bot scans?
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ketas
for mitm you needed access too
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ketas
i doubt you discard ssh traffic on other ports
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ketas
impersonate any server when the
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ketas
VerifyHostKeyDNS option is enabled. This option is off by default.
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polarian
ketas: its still a good thing to patch
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polarian
in case people are using it
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TommyC
ketas: The option that makes sshd vulnerable without the patch is the VerifyHostKeyDNS option being "on" where the default value is usually "off". Hence, as a joke, I said "No need to panic if you don't run sshd on port 22." because that's a completely different and unrelated option.
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ketas
and second was dos?
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ivy
TommyC: it's also ssh(1) that's affected, not sshd(8)...
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TommyC
ivy: My bad, you're right. I'm just used to typing "sshd" when it comes to some vulnerability.
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ketas
mitm is ssh, dos is sshd
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polarian
dos is not a big deal, at least imo... it is not a security flaw but is annoying
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polarian
but a mitm, even if it is non-default options is a big deal
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ketas
dos sucks too
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polarian
yeah but you aren't going to get pwned from a dos
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polarian
are you?
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ketas
but yeah, VerifyHostKeyDNS=on == mitm
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ketas
is cursed
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ketas
i bet everyone also looks into it
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ketas
logic error is also stupid mistake
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ketas
real bad
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ivy
hmmm, i booted 15.0 disc1 ISO and expected to get the installer on the serial console, but did not... is dual console not enabled on the installer?
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ivy
i thought i'd done this before and it just worked
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samporterbridges
ivy: i ran into the same thing today too. had to enable it in /boot/loader.conf
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samporterbridges
ivy: fwiw, enabling the corresponding serial console settings in loader.conf didn
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ivy
yeah, just mildly annoying as i had to set up VNC in order to do that :-)
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samporterbridges
't seem to work
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rwp
To install with serial one must boot the installer initial loader to the boot prompt which does work over serial. Then Select "3. Escape to loader prompt" and then type in set console=comconsole and then boot in order to get a serial port install.
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ivy
i didn't get beastie over serial, if the BIOS loader prints anything i must have been too slow to see it :(
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ivy
i wonder if this is because (iirc) this VM provider only supports BIOS boot rather than UEFI, i recall BIOS serial console support is a bit more limited or you have to recompile the first stage loader to change the default, or something
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rwp
If you are not getting to the Beastie prompt then perhaps the serial is a different address than the default? No idea.
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ivy
(did i mention i hate BIOS boot?)
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rwp
Let me mention that I hate UEFI boot.
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rwp
So between the two of us we have everything covered! :-)
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samporterbridges
and mine's an APU2 board, i don't have a VGA option
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ivy
oh well, after install setting boot_serial=YES; console=comconsole is all working
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skered
rwp: Why do you hate UEFI?
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mason
Frankly anything that's not OpenFirmware is subpar.
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cs_0x6373
does anyone know if the powerpc64/powerpc64le port support PowerVM virtualized Power8/9/10 systems or only the linux-only systems?
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cs_0x6373
i just tried booting 14.2 (both big and little endianess) on an S822 (Power8) system in an lpar, but i only get an error on boot
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jmnbtslsQE
scoobybejesus: OK, but out of curiosity, then what caused the SSL error? your proxy was malfunctioning? because the description for that error said it should be something unrelated to the peers or their exchange
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scoobybejesus
I did not confirm (I suppose I may try later) but I suspect getting the middle of a tcp stream causes the recipient to immediately respond with "this is nonsense", which why the immediate response is to request to close the connection
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jschmidt
re: the ssh MitM attack - assuming VerifyHostKeyDNS /is/ set to yes, is that mitigated by DNSSEC? I do publish SSHFP RRs to my DNSSEC-enabled domains...
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lts
jschmidt: I'd guess it is not a mitigation. From the attack description: "as if no error had occurred, and without checking the server's host key at all."
openwall.com/lists/oss-security/2025/02/18/1
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jschmidt
ok, then "ouch". :^)
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uskerine
I will try again, how well supported tend Dell laptops (from 2018/2019) to be in FreeBSD? Thanks
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lts
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uskerine
thanks, shall I understand this one is reasonablily supported?
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uskerine
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ivy
let's say i do 'zfs create -o mountpoint=/export zroot/export', then it's fine to do 'zfs create -o mountpoint=/export/home data/home', right? since zroot (the root pool) is mounted before data and will never be unmounted, this should work okay
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bdrewery
ivy: yes
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ivy
thanks