| Name | CVE-2020-12662 |
| Description | Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2556-1, DSA-4694-1 |
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 | vulnerable |
| stretch | 1.6.0-3+deb9u2 | vulnerable |
| 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 |
| unbound1.9 (PTS) | stretch (security) | 1.9.0-2+deb10u2~deb9u2 | fixed |
| stretch (lts), stretch | 1.9.0-2+deb10u2~deb9u5 | fixed |
The information below is based on the following data on fixed versions.
Notes
[stretch] - unbound <end-of-life> (No longer supported, see DSA 4694)
[jessie] - unbound <end-of-life> (No longer supported)
https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt
Patch: https://nlnetlabs.nl/downloads/unbound/patch_cve_2020-12662_2020-12663.diff