Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-15105
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:11 UTC · Revision 1
Source evidence
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.
osv:CVE-2017-15105
Complete source record
{
"id": "7314a221463048c69e733dd9a8a58a7caa9514d6df36e65ac92fbbc247a967f4",
"url": "https://osv.dev/vulnerability/CVE-2017-15105",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-15105",
"summary": "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.",
"evidence": "osv:CVE-2017-15105",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2017-15105",
"aliases": [
"CVE-2017-15105"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/nlnetlabs/unbound",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "df881fedb30858ae8007c4629ed9b52243c5b83a"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "1.6.8"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"release-1.6.7",
"release-1.6.7rc1",
"release-1.6.6rc2",
"release-1.6.6rc1",
"release-1.6.4rc2",
"release-1.6.4rc1",
"release-1.6.2rc1",
"release-1.6.1rc3",
"release-1.6.1rc2",
"release-1.6.1rc1",
"release-1.6.0rc1",
"release-1.5.10rc1",
"release-1.5.10",
"release-1.5.9rc1",
"release-1.5.8rc1",
"release-1.5.8",
"release-1.5.7",
"release-1.5.6",
"release-1.5.6rc1",
"release-1.5.5",
"release-1.5.5rc1",
"release-1.5.4rc1",
"release-1.5.4",
"release-1.5.3rc1",
"release-1.5.2",
"release-1.5.2rc1",
"release-1.5.1",
"release-1.5.1rc2",
"release-1.5.1rc1",
"release-1.5.0rc1",
"release-1.4.22",
"release-1.4.22rc1",
"release-1.4.20",
"release-1.4.19",
"release-1.4.19rc1",
"release-1.4.18rc2",
"release-1.4.18rc1",
"release-1.4.17",
"release-1.4.17rc1",
"release-1.4.14",
"release-1.4.14rc1",
"release-1.4.13",
"release-1.4.13rc2",
"release-1.4.13rc1",
"release-1.4.12rc1",
"release-1.4.11rc3",
"release-1.4.11",
"release-1.4.11rc2",
"release-1.4.11rc1",
"release-1.4.9",
"release-1.4.9rc1",
"release-1.4.8rc1",
"release-1.4.7",
"release-1.4.7rc1",
"release-1.4.6",
"release-1.4.6rc1",
"release-1.4.5",
"release-1.4.5rc1",
"release-1.4.4",
"release-1.4.4rc1",
"release-1.4.3",
"release-1.4.2",
"release-1.4.1",
"release-1.4.0",
"release-1.4.0rc1",
"release-1.3.3",
"release-1.3.3rc1",
"release-1.3.2",
"release-1.3.1",
"release-1.1.1",
"release-1.0.1",
"release-0.11",
"release-0.10",
"release-0.8",
"release-0.7",
"release-0.6",
"release-0.5",
"release-0.4",
"release-0.3",
"release-0.1",
"release-0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-15105.json"
}
}
],
"modified": "2026-10-24T10:30:36.059925297Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2018/01/msg00039.html",
"https://lists.debian.org/debian-lts-announce/2019/02/msg00022.html",
"https://usn.ubuntu.com/3673-1/",
"https://unbound.net/downloads/CVE-2017-15105.txt"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "17.10"
},
{
"last_affected": "17.10"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
},
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-15105",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 433984,
"published_at": "2018-01-23T16:29:00.273+00:00"
}