Published: 30/10/2019 Updated: 11/04/2024

CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10

CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9

VMScore: 668

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

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)

Vulnerable Product	Search on Vulmon	Subscribe to Product
systemd project systemd
fedoraproject fedora 31

CWE-295 https://github.com/systemd/systemd/issues/9397 https://blog.cloudflare.com/dns-encryption-explained/https://github.com/systemd/systemd/blob/v243/src/resolve/resolved-dnstls-gnutls.c#L62-L63 https://security.netapp.com/advisory/ntap-20191122-0002/https://github.com/systemd/systemd/pull/13870 https://tools.ietf.org/html/rfc7858#section-4.1 https://github.com/systemd/systemd/blob/v239/man/resolved.conf.xml#L199-L207 https://github.com/systemd/systemd/blob/v243/man/resolved.conf.xml#L196-L207 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NLJVOJMB6ANDILRLDZK26YGLYBEPHKY/https://nvd.nist.gov

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