CVE catalog
CVE-2022-30699
unbound: CVE-2022-30699
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.16% · Oct 27, 2026
NLnet Labs Unbound, up to and including version 1.16.1, is vulnerable to a novel type of the "ghost domain names" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a rogue domain name when the cached delegation information is about to expire. The rogue nameserver delays the response so that the cached delegation information is expired. Upon receiving the delayed answer containing the delegation information, Unbound overwrites the now expired entries. This action can be repeated when the delegation information is about to expire making the rogue delegation information ever-updating. From version 1.16.2 on, Unbound stores the start time for a query and uses that to decide if the cached delegation information can be overwritten.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | unbound | sid | 1.26.2-1 | fixed |
| Debian | unbound | forky | 1.26.2-1 | fixed |
| Debian | unbound | trixie | 1.22.0-2+deb13u3 | fixed |
| Debian | unbound | trixie-security | 1.26.2-0+deb13u1 | fixed |
| Debian | unbound | bookworm | 1.17.1-2+deb12u4 | fixed |
| Debian | unbound | bookworm-security | 1.17.1-2+deb12u3 | fixed |
| Ubuntu | unbound | pro | 1.4.22-1ubuntu6 | vulnerable |
| Ubuntu | unbound | pro | 1.5.7-1ubuntu1 | vulnerable |
| Ubuntu | unbound | pro | 1.5.7-1ubuntu2 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1+esm1 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1+esm2 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1+esm3 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1+esm4 | vulnerable |
| Ubuntu | unbound | pro | 1.5.8-1ubuntu1.1+esm5 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.5-1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1build1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.1 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.2 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.3 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.4 | vulnerable |
| Ubuntu | unbound | 18.04 | 1.6.7-1ubuntu2.5 | fixed |
| Ubuntu | unbound | 20.04 | 1.9.0-2ubuntu1 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.0-2ubuntu2 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2ubuntu1 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2ubuntu1.1 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2ubuntu1.2 | vulnerable |
| Ubuntu | unbound | 20.04 | 1.9.4-2ubuntu1.3 | fixed |
| Ubuntu | unbound | 22.04 | 1.13.1-1ubuntu1 | vulnerable |
| Ubuntu | unbound | 22.04 | 1.13.1-1ubuntu3 | vulnerable |
| Ubuntu | unbound | 22.04 | 1.13.1-1ubuntu5 | vulnerable |
| Ubuntu | unbound | 22.04 | 1.13.1-1ubuntu5.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | unbound | source | sid | 1.16.2-1 | not yet assigned | Not reported | [1016493] |
| Debian | unbound | source | forky | 1.16.2-1 | not yet assigned | Not reported | [1016493] |
| Debian | unbound | source | trixie | 1.16.2-1 | not yet assigned | Not reported | [1016493] |
| Debian | unbound | source | bookworm | 1.16.2-1 | not yet assigned | Not reported | [1016493] |
| Ubuntu | unbound | deb | 18.04 | 1.6.7-1ubuntu2.5 | Not reported | UBUNTU-CVE-2022-30699 | Not reported |
| Ubuntu | unbound | deb | 20.04 | 1.9.4-2ubuntu1.3 | Not reported | UBUNTU-CVE-2022-30699 | Not reported |
| Ubuntu | unbound | deb | 22.04 | 1.13.1-1ubuntu5.1 | Not reported | UBUNTU-CVE-2022-30699 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libunbound8]Fixed
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
- [libunbound-dev]Fixed
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
- [python3-unbound]Fixed
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
- [unbound]Fixed
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
- [unbound-anchor]Fixed
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
- [unbound-host]Fixed
Source package: [unbound]
Details (4)
1.17.1-2+deb12u4· amd64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u4· arm64 · bookwormFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· amd64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
1.17.1-2+deb12u3· arm64 · bookworm-securityFixed · Fixed:
1.16.2-1dsa · unbound · debian · bookworm
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2022_7622.json]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2022-30699]
- [https://security-tracker.debian.org/tracker/CVE-2022-30699]
- [https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-30699.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2022/wid-sec-w-2022-2044.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]