| Name | CVE-2017-15105 |
| Description | A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wildcard NSEC record could be used to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick unbound into accepting a NODATA proof. |
| 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-1264-1, DLA-1676-1 |
| Debian Bugs | 887733 |
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
https://unbound.net/downloads/CVE-2017-15105.txt
https://unbound.net/downloads/patch_cve_2017_15105.diff
https://medium.com/nlnetlabs/the-peculiar-case-of-nsec-processing-using-expanded-wildcard-records-ae8285f236be