CVE-2018-21029

Name	CVE-2018-21029
Description	systemd 239 through 245 accepts any certificate signed by a trusted certificate authority for DNS Over TLS. Server Name Indication (SNI) is not sent, and there is no hostname validation with the GnuTLS backend. NOTE: This has been disputed by the developer as not a vulnerability since hostname validation does not have anything to do with this issue (i.e. there is no hostname to be sent)
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
systemd (PTS)	bookworm	252.39-1~deb12u2	fixed
	bookworm (security)	252.38-1~deb12u1	fixed
	trixie	257.13-1~deb13u1	fixed
	forky	261.2-1	fixed
	sid	262~rc1-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency
systemd	source	jessie	(not affected)
systemd	source	stretch	(not affected)
systemd	source	buster	(not affected)
systemd	source	(unstable)	244-1	low

Notes

[buster] - systemd <not-affected> (Only affected v243)
[stretch] - systemd <not-affected> (Only affected v243)
[jessie] - systemd <not-affected> (Only affected v243)
https://github.com/systemd/systemd/issues/9397