CVE-2019-18934

NameCVE-2019-18934
DescriptionUnbound 1.6.4 through 1.9.4 contain a vulnerability in the ipsec module that can cause shell code execution after receiving a specially crafted answer. This issue can only be triggered if unbound was compiled with `--enable-ipsecmod` support, and ipsecmod is enabled and used in the configuration.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
unbound (PTS)stretch1.6.0-3+deb9u2fixed
buster, buster (security)1.9.0-2+deb10u2vulnerable
bookworm, sid, bullseye1.13.1-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
unboundsourcejessie(not affected)
unboundsourcestretch(not affected)
unboundsource(unstable)1.9.6-1unimportant

Notes

[stretch] - unbound <not-affected> (ipsecmod module introduced later)
[jessie] - unbound <not-affected> (ipsecmod module introduced later)
Debian binary packages not built with --enable-ipsecmod
https://nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt
https://github.com/NLnetLabs/unbound/commit/09845779d5f2c96e3064ff398cad65c08357cfbf
https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/

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