Medium
Security advisory
The internal DNS server in Samba 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4.4.x before 4.4.0rc4, when an AD DC is configured, allows remote authenticated users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from process memory by uploading a crafted DNS TXT record.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-0771
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:18 UTC · Revision 1
Source evidence
The internal DNS server in Samba 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4.4.x before 4.4.0rc4, when an AD DC is configured, allows remote authenticated users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from process memory by uploading a crafted DNS TXT record.
osv:CVE-2016-0771
Complete source record
{
"id": "5381fadc9792dcad10aa5c2295ae970da1dc44f53b91a1ad1d343394d0b7a5e2",
"url": "https://osv.dev/vulnerability/CVE-2016-0771",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-0771",
"summary": "The internal DNS server in Samba 4.x before 4.1.23, 4.2.x before 4.2.9, 4.3.x before 4.3.6, and 4.4.x before 4.4.0rc4, when an AD DC is configured, allows remote authenticated users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from process memory by uploading a crafted DNS TXT record.",
"evidence": "osv:CVE-2016-0771",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2016-0771",
"aliases": [
"CVE-2016-0771"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/samba-team/samba",
"type": "GIT",
"events": [
{
"introduced": "df33344d8eb40221d60c99931690703a11d91bc2"
},
{
"last_affected": "ff77a114f3dd9ed79b9fec08c14ad4b9e107841b"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:samba:samba:4.0.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0"
},
{
"last_affected": "4.0.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.1"
},
{
"last_affected": "4.0.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.2"
},
{
"last_affected": "4.0.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.3"
},
{
"last_affected": "4.0.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.4"
},
{
"last_affected": "4.0.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.5"
},
{
"last_affected": "4.0.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.6:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.6"
},
{
"last_affected": "4.0.6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.7:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.7"
},
{
"last_affected": "4.0.7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.8:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.8"
},
{
"last_affected": "4.0.8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.9:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.9"
},
{
"last_affected": "4.0.9"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.10:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.10"
},
{
"last_affected": "4.0.10"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.11:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.11"
},
{
"last_affected": "4.0.11"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.12:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.12"
},
{
"last_affected": "4.0.12"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.13:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.13"
},
{
"last_affected": "4.0.13"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.14:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.14"
},
{
"last_affected": "4.0.14"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.15:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.15"
},
{
"last_affected": "4.0.15"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.16:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.16"
},
{
"last_affected": "4.0.16"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.17:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.17"
},
{
"last_affected": "4.0.17"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.18:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.18"
},
{
"last_affected": "4.0.18"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.19:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.19"
},
{
"last_affected": "4.0.19"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.20:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.20"
},
{
"last_affected": "4.0.20"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.21:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.21"
},
{
"last_affected": "4.0.21"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.22:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.22"
},
{
"last_affected": "4.0.22"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.23:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.23"
},
{
"last_affected": "4.0.23"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.0.24:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.24"
},
{
"last_affected": "4.0.24"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.0"
},
{
"last_affected": "4.1.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.1"
},
{
"last_affected": "4.1.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.2"
},
{
"last_affected": "4.1.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.3"
},
{
"last_affected": "4.1.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.4"
},
{
"last_affected": "4.1.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.5"
},
{
"last_affected": "4.1.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.6:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.6"
},
{
"last_affected": "4.1.6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.7:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.7"
},
{
"last_affected": "4.1.7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.8:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.8"
},
{
"last_affected": "4.1.8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.9:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.9"
},
{
"last_affected": "4.1.9"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.10:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.10"
},
{
"last_affected": "4.1.10"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.11:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.11"
},
{
"last_affected": "4.1.11"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.12:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.12"
},
{
"last_affected": "4.1.12"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.13:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.13"
},
{
"last_affected": "4.1.13"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.14:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.14"
},
{
"last_affected": "4.1.14"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.15:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.15"
},
{
"last_affected": "4.1.15"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.16:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.16"
},
{
"last_affected": "4.1.16"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.17:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.17"
},
{
"last_affected": "4.1.17"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.18:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.18"
},
{
"last_affected": "4.1.18"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.19:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.19"
},
{
"last_affected": "4.1.19"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.20:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.20"
},
{
"last_affected": "4.1.20"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.21:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.21"
},
{
"last_affected": "4.1.21"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.1.22:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.22"
},
{
"last_affected": "4.1.22"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-rc1"
},
{
"last_affected": "4.2.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-rc2"
},
{
"last_affected": "4.2.0-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.0:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-rc3"
},
{
"last_affected": "4.2.0-rc3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.0:rc4:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-rc4"
},
{
"last_affected": "4.2.0-rc4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.1"
},
{
"last_affected": "4.2.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.2"
},
{
"last_affected": "4.2.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.3"
},
{
"last_affected": "4.2.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.4"
},
{
"last_affected": "4.2.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.5"
},
{
"last_affected": "4.2.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.6:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.6"
},
{
"last_affected": "4.2.6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.7:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.7"
},
{
"last_affected": "4.2.7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.2.8:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.8"
},
{
"last_affected": "4.2.8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.3.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.3.0"
},
{
"last_affected": "4.3.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.3.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.3.1"
},
{
"last_affected": "4.3.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.3.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.3.2"
},
{
"last_affected": "4.3.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.3.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.3.3"
},
{
"last_affected": "4.3.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.3.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.3.4"
},
{
"last_affected": "4.3.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.3.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.3.5"
},
{
"last_affected": "4.3.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.4.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "4.4.0-rc1"
},
{
"last_affected": "4.4.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.4.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "4.4.0-rc2"
},
{
"last_affected": "4.4.0-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:samba:4.4.0:rc3:*:*:*:*:*:*",
"range": [
{
"introduced": "4.4.0-rc3"
},
{
"last_affected": "4.4.0-rc3"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"4.0.0",
"4.0.1",
"4.0.10",
"4.0.11",
"4.0.12",
"4.0.13",
"4.0.14",
"4.0.15",
"4.0.16",
"4.0.17",
"4.0.18",
"4.0.19",
"4.0.2",
"4.0.20",
"4.0.21",
"4.0.22",
"4.0.23",
"4.0.24",
"4.0.3",
"4.0.4",
"4.0.5",
"4.0.6",
"4.0.7",
"4.0.8",
"4.0.9",
"4.1.0",
"4.1.1",
"4.1.10",
"4.1.11",
"4.1.12",
"4.1.13",
"4.1.14",
"4.1.15",
"4.1.16",
"4.1.17",
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"4.2.0-rc4",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-0771.json"
}
}
],
"modified": "2026-10-24T10:30:16.909779837Z",
"provider": "osv",
"references": [
"https://www.samba.org/samba/security/CVE-2016-0771.html",
"https://bugzilla.samba.org/show_bug.cgi?id=11128",
"https://bugzilla.samba.org/show_bug.cgi?id=11686"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2016-0771",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 429443,
"published_at": "2016-03-13T22:59:01.797+00:00"
}