CVE-2019-16866

NameCVE-2019-16866
DescriptionUnbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-4544-1
Debian Bugs941692

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
unbound (PTS)jessie, jessie (lts)1.4.22-3+deb8u4fixed
stretch1.6.0-3+deb9u2fixed
buster, buster (lts)1.9.0-2+deb10u5fixed
buster (security)1.9.0-2+deb10u4fixed
bullseye1.13.1-1+deb11u2fixed
bullseye (security)1.13.1-1+deb11u4fixed
bookworm (security), bookworm1.17.1-2+deb12u2fixed
sid, trixie1.22.0-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
unboundsourcewheezy(unfixed)end-of-life
unboundsourcejessie(not affected)
unboundsourcestretch(not affected)
unboundsourcebuster1.9.0-2+deb10u1DSA-4544-1
unboundsource(unstable)1.9.4-1941692

Notes

[stretch] - unbound <not-affected> (Vulnerable code introduced in 1.7.1)
[jessie] - unbound <not-affected> (Vulnerable code introduced in 1.7.1)
https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt
Patch: https://nlnetlabs.nl/downloads/unbound/patch_cve_2019-16866.diff
https://github.com/NLnetLabs/unbound/commit/b60c4a472c856f0a98120b7259e991b3a6507eb5
https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/

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