CVE catalog

CVE-2022-30698

unbound: CVE-2022-30698

Severity: Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Published: Aug 1, 2022, 3:15:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 1.16% · Oct 25, 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 subdomain of a rogue domain name. The rogue nameserver returns delegation information for the subdomain that updates Unbound's delegation cache. This action can be repeated before expiry of the delegation information by querying Unbound for a second level subdomain which the rogue nameserver provides new delegation information. Since Unbound is a child-centric resolver, the ever-updating child delegation information can keep a rogue domain name resolvable long after revocation. From version 1.16.2 on, Unbound checks the validity of parent delegation records before using cached delegation information.

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
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
Suse	unbound	linux enterprise module for basesystem 15 sp6	`1.20.0-150600.23.3.1`	fixed
Suse	unbound	linux enterprise module for package hub 15 sp6	`1.20.0-150600.23.3.1`	fixed
Opensuse	unbound	leap 15.6	`1.20.0-150600.23.3.1`	fixed
Suse	unbound	linux enterprise micro 5.5	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise module for basesystem 15 sp5	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise module for package hub 15 sp5	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise high performance computing 15 sp2-ltss	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise high performance computing 15 sp3-ltss	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise high performance computing 15 sp4-espos	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise high performance computing 15 sp4-ltss	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise server 15 sp2-ltss	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise server 15 sp3-ltss	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise server 15 sp4-ltss	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise server for sap applications 15 sp2	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise server for sap applications 15 sp3	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	linux enterprise server for sap applications 15 sp4	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	manager proxy 4.3	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	manager server 4.3	`1.20.0-150100.10.13.1`	fixed
Suse	unbound	enterprise storage 7.1	`1.20.0-150100.10.13.1`	fixed
Opensuse	unbound	leap 15.5	`1.20.0-150100.10.13.1`	fixed
Opensuse	unbound	tumbleweed	`1.16.2-1.1`	fixed
Suse	unbound	linux enterprise micro 5.5	`1.20.0-150100.10.13.1`	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-2022-30698	Not reported
Ubuntu	unbound	deb	20.04	`1.9.4-2ubuntu1.3`	Not reported	UBUNTU-CVE-2022-30698	Not reported
Ubuntu	unbound	deb	22.04	`1.13.1-1ubuntu5.1`	Not reported	UBUNTU-CVE-2022-30698	Not reported
Ubuntu	unbound	deb	18.04	`1.6.7-1ubuntu2.5`	Not reported	USN-5569-1	Not reported
Ubuntu	unbound	deb	20.04	`1.9.4-2ubuntu1.3`	Not reported	USN-5569-1	Not reported
Ubuntu	unbound	deb	22.04	`1.13.1-1ubuntu5.1`	Not reported	USN-5569-1	Not reported
Suse	unbound	rpm	linux enterprise module for basesystem 15 sp6	`1.20.0-150600.23.3.1`	Not reported	SUSE-SU-2024:1923-1	Not reported
Suse	unbound	rpm	linux enterprise module for package hub 15 sp6	`1.20.0-150600.23.3.1`	Not reported	SUSE-SU-2024:1923-1	Not reported
Opensuse	unbound	rpm	leap 15.6	`1.20.0-150600.23.3.1`	Not reported	SUSE-SU-2024:1923-1	Not reported
Suse	unbound	rpm	linux enterprise micro 5.5	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise module for basesystem 15 sp5	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise module for package hub 15 sp5	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise high performance computing 15 sp2-ltss	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise high performance computing 15 sp3-ltss	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise high performance computing 15 sp4-espos	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise high performance computing 15 sp4-ltss	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise server 15 sp2-ltss	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise server 15 sp3-ltss	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise server 15 sp4-ltss	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise server for sap applications 15 sp2	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise server for sap applications 15 sp3	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	linux enterprise server for sap applications 15 sp4	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	manager proxy 4.3	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	manager server 4.3	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Suse	unbound	rpm	enterprise storage 7.1	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Opensuse	unbound	rpm	leap 15.5	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-1	Not reported
Opensuse	unbound	rpm	tumbleweed	`1.16.2-1.1`	Not reported	OPENSUSE-SU-2024:12235-1	Not reported
Suse	unbound	rpm	linux enterprise micro 5.5	`1.20.0-150100.10.13.1`	Not reported	SUSE-SU-2024:1991-2	Not reported

[Debian bug #1016493]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libunbound8]Unknown
Source package: [unbound]
Details (4)
- 1.17.1-2+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
[libunbound-dev]Unknown
Source package: [unbound]
Details (4)
- 1.17.1-2+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
[python3-unbound]Unknown
Source package: [unbound]
Details (4)
- 1.17.1-2+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
[unbound]Unknown
Details (4)
- 1.17.1-2+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
[unbound-anchor]Unknown
Source package: [unbound]
Details (4)
- 1.17.1-2+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
[unbound-host]Unknown
Source package: [unbound]
Details (4)
- 1.17.1-2+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm
- 1.17.1-2+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 1.16.2-1
  dsa · unbound · debian · bookworm

[openSUSE Tumbleweed]

[libunbound8]Unknown
Source package: [unbound]
Details (1)
- 1.26.0-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.16.2-1.1
  Version impact unknown
  dsa · unbound · opensuse · tumbleweed
[python3-unbound]Unknown
Source package: [unbound]
Details (1)
- 1.26.0-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.16.2-1.1
  Version impact unknown
  dsa · unbound · opensuse · tumbleweed
[unbound]Unknown
Source package: [unbound]
Details (1)
- 1.26.0-2.1 · x86_64 · tumbleweed
  Fixed · Fixed: 1.16.2-1.1
  dsa · unbound · opensuse · tumbleweed
[unbound-anchor]Unknown
Source package: [unbound]
Details (1)
- 1.26.0-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.16.2-1.1
  Version impact unknown
  dsa · unbound · opensuse · tumbleweed
[unbound-devel]Unknown
Source package: [unbound]
Details (1)
- 1.26.0-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 1.16.2-1.1
  Version impact unknown
  dsa · unbound · opensuse · tumbleweed
[unbound-munin]Unknown
Source package: [unbound]
Details (1)
- 1.26.0-2.1 · noarch · tumbleweed
  Unknown · Fixed: 1.16.2-1.1
  Version impact unknown
  dsa · unbound · opensuse · tumbleweed

Observed: Oct 23, 2026, 6:26:46 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]