| Name | CVE-2019-16866 |
| Description | Unbound 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-4544-1 |
| Debian Bugs | 941692 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| unbound (PTS) | jessie, jessie (lts) | 1.4.22-3+deb8u4 | fixed |
| stretch | 1.6.0-3+deb9u2 | fixed |
| buster, buster (lts) | 1.9.0-2+deb10u5 | fixed |
| buster (security) | 1.9.0-2+deb10u4 | fixed |
| bullseye | 1.13.1-1+deb11u2 | fixed |
| bullseye (security) | 1.13.1-1+deb11u4 | fixed |
| bookworm (security), bookworm | 1.17.1-2+deb12u2 | fixed |
| sid, trixie | 1.22.0-1 | fixed |
The information below is based on the following data on fixed versions.
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/