| Name | CVE-2019-25036 |
| Description | Unbound before 1.9.5 allows an assertion failure and denial of service in synth_cname. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited |
| 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-2652-1 |
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 | vulnerable |
| buster (security) | 1.9.0-2+deb10u4 | vulnerable |
| 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~deb9u4 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| unbound | source | jessie | (unfixed) | end-of-life | | |
| unbound | source | stretch | (unfixed) | end-of-life | | |
| unbound | source | (unstable) | 1.9.6-1 | unimportant | | |
| unbound1.9 | source | stretch | 1.9.0-2+deb10u2~deb9u2 | | DLA-2652-1 | |
Notes
[stretch] - unbound <end-of-life> (No longer supported, see DSA 4694)
https://github.com/NLnetLabs/unbound/commit/f5e06689d193619c57c33270c83f5e40781a261d
Not deemed an exploitable vulnerability by upstream