This bug was fixed in the package systemd - 237-3ubuntu8
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systemd (237-3ubuntu8) bionic; urgency=medium
* Workaround captive portals not responding to EDNS0 queries (DVE-2018-0001).
(LP: #1727237)
* resolved: Listen on both TCP and UDP by default. (LP: #1731522)
*
Xenial is affected too (systemd v229 looks to be, in general), so when
SRUing we might as well push the fix there too, even if resolved is not
typically used on Xenial.
** Also affects: systemd (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: systemd (Ubuntu Xenial)
Packages are in my ppa:
https://launchpad.net/~cyphermox/+archive/ubuntu/sru/+packages
For bionic and xenial. I'll do one further build for artful.
>From the look of things though, this will only be built and ready for
amd64/i386, not for other architectures just yet.
** Changed in: systemd
** Also affects: systemd (Ubuntu Zesty)
Importance: Undecided
Status: New
** Changed in: systemd (Ubuntu Bionic)
Status: Triaged => Fix Committed
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** Also affects: systemd (Ubuntu Bionic)
Importance: High
Status: Triaged
** Also affects: systemd (Ubuntu Artful)
Importance: Undecided
Status: New
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