| 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, 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 Package | Release | Version | Status |
|---|
| systemd (PTS) | bullseye | 247.3-7+deb11u5 | fixed |
| bullseye (security) | 247.3-7+deb11u6 | fixed |
| bookworm | 252.36-1~deb12u1 | fixed |
| bookworm (security) | 252.38-1~deb12u1 | fixed |
| trixie, sid | 257.7-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| 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