samba — security advisory
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
- Products
- samba
- Affected versions
- Not specified
- Fixed versions
- 2:4.1.8+dfsg-1
- CVEs
- CVE-2014-0239
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 21:45 UTC · Revision 1
Source evidence
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
osv:DEBIAN-CVE-2014-0239
samba
Fixed versions: 2:4.1.8+dfsg-1
samba
Fixed versions: 2:4.1.8+dfsg-1
samba
Fixed versions: 2:4.1.8+dfsg-1
Complete source record
{
"id": "3ea7b908afb025ab5ca2ed05b5506ff83922c0a9bc0591cee7abb1aea804c824",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2014-0239",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2014-0239",
"summary": "The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.",
"evidence": "osv:DEBIAN-CVE-2014-0239",
"products": [
{
"name": {
"value": "samba",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.1.8+dfsg-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "samba",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.1.8+dfsg-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "samba",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2:4.1.8+dfsg-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "DEBIAN-CVE-2014-0239",
"aliases": [
"DEBIAN-CVE-2014-0239"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.1.8+dfsg-1"
}
]
}
],
"package": {
"name": "samba",
"purl": "pkg:deb/debian/samba?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-0239.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.1.8+dfsg-1"
}
]
}
],
"package": {
"name": "samba",
"purl": "pkg:deb/debian/samba?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-0239.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2:4.1.8+dfsg-1"
}
]
}
],
"package": {
"name": "samba",
"purl": "pkg:deb/debian/samba?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2014-0239.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T15:47:35.975105115Z",
"provider": "osv",
"upstream": [
"CVE-2014-0239"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2014-0239"
]
},
"related_cves": [
{
"value": "CVE-2014-0239",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 414340,
"published_at": "2014-05-28T04:58:32.75+00:00"
}