CVE-2018-21029

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Summary

CVECVE-2018-21029
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-10-30 22:15:00 UTC
Updated2023-11-07 02:56:00 UTC
Description** DISPUTED ** 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).

Risk And Classification

Problem Types: CWE-295

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 31 All All All
Application Freedesktop Systemd All All All All
Application Freedesktop Systemd All All All All
Application Systemd Project Systemd All All All All
Application Systemd Project Systemd All All All All

References

ReferenceSourceLinkTags
systemd/resolved.conf.xml at v239 · systemd/systemd · GitHub MISC github.com
[SECURITY] Fedora 31 Update: systemd-243.4-1.fc31 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 31 Update: systemd-243.4-1.fc31 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
CVE-2018-21029 Systemd Vulnerability in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
DNS Encryption Explained MISC blog.cloudflare.com Third Party Advisory
resolved: validate IP address in certificate for DNS-over-TLS (GnuTLS) by irtimmer · Pull Request #13870 · systemd/systemd · GitHub MISC github.com
RFC 7858 - Specification for DNS over Transport Layer Security (TLS) MISC tools.ietf.org
systemd/resolved.conf.xml at v243 · systemd/systemd · GitHub MISC github.com
RFE: Certificate checking for Resolveds DNS over TLS feature · Issue #9397 · systemd/systemd · GitHub MISC github.com Issue Tracking, Third Party Advisory
systemd/resolved-dnstls-gnutls.c at v243 · systemd/systemd · GitHub MISC github.com Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 900013 CBL-Mariner Linux Security Update for systemd 239
  • 903146 Common Base Linux Mariner (CBL-Mariner) Security Update for systemd (2696)
  • 905779 Common Base Linux Mariner (CBL-Mariner) Security Update for systemd (2696-1)
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