CVE-2018-21029

NameCVE-2018-21029
Descriptionsystemd 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)
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, 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 PackageReleaseVersionStatus
systemd (PTS)jessie, jessie (lts)215-17+deb8u15fixed
stretch (security)232-25+deb9u14fixed
stretch (lts), stretch232-25+deb9u17fixed
buster, buster (lts)241-7~deb10u11fixed
buster (security)241-7~deb10u10fixed
bullseye247.3-7+deb11u5fixed
bullseye (security)247.3-7+deb11u6fixed
bookworm252.31-1~deb12u1fixed
trixie257-2fixed
sid257.1-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
systemdsourcewheezy(not affected)
systemdsourcejessie(not affected)
systemdsourcestretch(not affected)
systemdsourcebuster(not affected)
systemdsource(unstable)244-1low

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
[wheezy] - systemd <not-affected> (Vulnerable code introduced later)

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