Critical
nsd — security advisory
nsd-checkzone in NLnet Labs NSD 4.2.0 has a Stack-based Buffer Overflow in the dname_concatenate() function in dname.c.
- Products
- nsd
- Affected versions
- 4.1.16-1build1, 4.1.17-1, 4.1.17-1build1, 4.1.17-1ubuntu0.1~esm1, 4.1.2-1, 4.1.26-1, 4.1.26-1build1, 4.1.26-1ubuntu0.1~esm1, 4.1.6-1, 4.1.7-1, 4.1.7-1ubuntu0.1~esm1, 4.11.1-1, 4.12.0-1, 4.13.0-6, 4.14.0-1, 4.14.0-1ubuntu0.1~esm1, 4.14.2-1, 4.14.3-1, 4.15.0-1, 4.15.0-1build1, 4.3.5-1, 4.3.7-1, 4.3.8-1, 4.3.8-1build1, 4.3.9-1, 4.3.9-1ubuntu0.1~esm1, 4.7.0-1, 4.8.0-1, 4.8.0-1build1, 4.8.0-1build3, 4.8.0-1ubuntu0.1~esm1
- Fixed versions
- Not specified
- CVEs
- CVE-2019-13207
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:30 UTC · Revision 1
Source evidence
nsd-checkzone in NLnet Labs NSD 4.2.0 has a Stack-based Buffer Overflow in the dname_concatenate() function in dname.c.
osv:UBUNTU-CVE-2019-13207
nsd
Fixed versions: Not specified
nsd
Fixed versions: Not specified
nsd
Fixed versions: Not specified
nsd
Fixed versions: Not specified
nsd
Fixed versions: Not specified
nsd
Fixed versions: Not specified
nsd
Fixed versions: Not specified
nsd
Fixed versions: Not specified
Complete source record
{
"id": "bf9ce5158a8d80237ea568cdb6a3fabf26aaef65f416c1ae851af59722fd4d10",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2019-13207",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2019-13207",
"summary": "nsd-checkzone in NLnet Labs NSD 4.2.0 has a Stack-based Buffer Overflow in the dname_concatenate() function in dname.c.",
"evidence": "osv:UBUNTU-CVE-2019-13207",
"products": [
{
"name": {
"value": "nsd",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.1.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.1.6-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.1.7-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.1.7-1ubuntu0.1~esm1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "nsd",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.1.16-1build1",
"evidence": "/affected/1/versions"
},
{
"value": "4.1.17-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.1.17-1build1",
"evidence": "/affected/1/versions"
},
{
"value": "4.1.17-1ubuntu0.1~esm1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "nsd",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.1.26-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.1.26-1build1",
"evidence": "/affected/2/versions"
},
{
"value": "4.1.26-1ubuntu0.1~esm1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "nsd",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.3.5-1",
"evidence": "/affected/3/versions"
},
{
"value": "4.3.7-1",
"evidence": "/affected/3/versions"
},
{
"value": "4.3.8-1",
"evidence": "/affected/3/versions"
},
{
"value": "4.3.8-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "4.3.9-1",
"evidence": "/affected/3/versions"
},
{
"value": "4.3.9-1ubuntu0.1~esm1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "nsd",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.7.0-1",
"evidence": "/affected/4/versions"
},
{
"value": "4.8.0-1",
"evidence": "/affected/4/versions"
},
{
"value": "4.8.0-1build1",
"evidence": "/affected/4/versions"
},
{
"value": "4.8.0-1build3",
"evidence": "/affected/4/versions"
},
{
"value": "4.8.0-1ubuntu0.1~esm1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "nsd",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.11.1-1",
"evidence": "/affected/5/versions"
},
{
"value": "4.12.0-1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "nsd",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.14.0-1",
"evidence": "/affected/6/versions"
},
{
"value": "4.14.2-1",
"evidence": "/affected/6/versions"
},
{
"value": "4.14.3-1",
"evidence": "/affected/6/versions"
},
{
"value": "4.15.0-1",
"evidence": "/affected/6/versions"
},
{
"value": "4.15.0-1build1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "nsd",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.12.0-1",
"evidence": "/affected/7/versions"
},
{
"value": "4.13.0-6",
"evidence": "/affected/7/versions"
},
{
"value": "4.14.0-1",
"evidence": "/affected/7/versions"
},
{
"value": "4.14.0-1ubuntu0.1~esm1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2019-13207",
"aliases": [
"UBUNTU-CVE-2019-13207"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/ubuntu/nsd?arch=source&distro=esm-apps-legacy%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"4.1.2-1",
"4.1.6-1",
"4.1.7-1",
"4.1.7-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-13207.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nsd",
"binary_version": "4.1.7-1ubuntu0.1~esm1"
},
{
"binary_name": "nsd3",
"binary_version": "4.1.7-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/ubuntu/nsd?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"4.1.16-1build1",
"4.1.17-1",
"4.1.17-1build1",
"4.1.17-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-13207.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nsd",
"binary_version": "4.1.17-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/ubuntu/nsd?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"4.1.26-1",
"4.1.26-1build1",
"4.1.26-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-13207.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nsd",
"binary_version": "4.1.26-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/ubuntu/nsd?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"4.3.5-1",
"4.3.7-1",
"4.3.8-1",
"4.3.8-1build1",
"4.3.9-1",
"4.3.9-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-13207.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nsd",
"binary_version": "4.3.9-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/ubuntu/nsd?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"4.7.0-1",
"4.8.0-1",
"4.8.0-1build1",
"4.8.0-1build3",
"4.8.0-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-13207.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nsd",
"binary_version": "4.8.0-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/ubuntu/nsd?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"4.11.1-1",
"4.12.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-13207.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nsd",
"binary_version": "4.12.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/ubuntu/nsd?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"4.14.0-1",
"4.14.2-1",
"4.14.3-1",
"4.15.0-1",
"4.15.0-1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-13207.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nsd",
"binary_version": "4.15.0-1build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "nsd",
"purl": "pkg:deb/ubuntu/nsd?arch=source&distro=esm-apps%2Fresolute",
"ecosystem": "Ubuntu:Pro:26.04:LTS"
},
"versions": [
"4.12.0-1",
"4.13.0-6",
"4.14.0-1",
"4.14.0-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-13207.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "nsd",
"binary_version": "4.14.0-1ubuntu0.1~esm1"
}
]
}
}
],
"modified": "2026-10-17T12:55:31.614258192Z",
"provider": "osv",
"upstream": [
"CVE-2019-13207"
],
"references": [
"https://ubuntu.com/security/CVE-2019-13207",
"https://github.com/NLnetLabs/nsd/issues/20",
"https://github.com/NLnetLabs/nsd/commit/91102da24d5949ccfec8fdab5bae2d01c4cabab5",
"https://www.cve.org/CVERecord?id=CVE-2019-13207"
]
},
"related_cves": [
{
"value": "CVE-2019-13207",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 353855,
"published_at": "2019-07-03T20:15:00+00:00"
}