| 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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more) |
| References | DSA-4694-1 |
| NVD severity | medium |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| unbound (PTS) | stretch | 1.6.0-3+deb9u2 | vulnerable |
| buster | 1.9.0-2+deb10u1 | vulnerable |
| buster (security) | 1.9.0-2+deb10u2 | fixed |
| bullseye, sid | 1.10.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| unbound | source | (unstable) | 1.10.1-1 | | | |
| unbound | source | buster | 1.9.0-2+deb10u2 | | DSA-4694-1 | |
| unbound | source | jessie | (unfixed) | end-of-life | | |
| unbound | source | stretch | (unfixed) | end-of-life | | |
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