Unrated
djbdns — security advisory
The resolver in dnscache in Daniel J. Bernstein djbdns 1.05 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.
- Products
- djbdns
- Affected versions
- 1:1.05-15fakesync1, 1:1.05-15ubuntu2, 1:1.05-22ubuntu1, 1:1.05-22ubuntu2, 1:1.05-23fakesync1, 1:1.05-8ubuntu1
- Fixed versions
- Not specified
- CVEs
- CVE-2012-1191
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:19 UTC · Revision 1
Source evidence
The resolver in dnscache in Daniel J. Bernstein djbdns 1.05 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.
osv:UBUNTU-CVE-2012-1191
djbdns
Fixed versions: Not specified
djbdns
Fixed versions: Not specified
djbdns
Fixed versions: Not specified
djbdns
Fixed versions: Not specified
djbdns
Fixed versions: Not specified
djbdns
Fixed versions: Not specified
Complete source record
{
"id": "01821719923e736449734e5069f520bd362e84a7efdd716e3bb3af26ba967e32",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2012-1191",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2012-1191",
"summary": "The resolver in dnscache in Daniel J. Bernstein djbdns 1.05 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a \"ghost domain names\" attack.",
"evidence": "osv:UBUNTU-CVE-2012-1191",
"products": [
{
"name": {
"value": "djbdns",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.05-8ubuntu1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "djbdns",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.05-15fakesync1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "djbdns",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.05-15ubuntu2",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "djbdns",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.05-15ubuntu2",
"evidence": "/affected/3/versions"
},
{
"value": "1:1.05-22ubuntu1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "djbdns",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.05-22ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "1:1.05-23fakesync1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "djbdns",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:1.05-22ubuntu1",
"evidence": "/affected/5/versions"
},
{
"value": "1:1.05-22ubuntu2",
"evidence": "/affected/5/versions"
}
]
}
],
"severity": "unknown",
"structured": {
"id": "UBUNTU-CVE-2012-1191",
"aliases": [
"UBUNTU-CVE-2012-1191"
],
"metrics": [
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "djbdns",
"purl": "pkg:deb/ubuntu/djbdns?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"1:1.05-8ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dbndns",
"binary_version": "1:1.05-8ubuntu1"
},
{
"binary_name": "djbdns",
"binary_version": "1:1.05-8ubuntu1"
},
{
"binary_name": "dnscache-run",
"binary_version": "1:1.05-8ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "djbdns",
"purl": "pkg:deb/ubuntu/djbdns?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"1:1.05-15fakesync1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "axfrdns",
"binary_version": "1:1.05-15fakesync1"
},
{
"binary_name": "djbdns-conf",
"binary_version": "1:1.05-15fakesync1"
},
{
"binary_name": "djbdns-utils",
"binary_version": "1:1.05-15fakesync1"
},
{
"binary_name": "dnscache",
"binary_version": "1:1.05-15fakesync1"
},
{
"binary_name": "rbldns",
"binary_version": "1:1.05-15fakesync1"
},
{
"binary_name": "tinydns",
"binary_version": "1:1.05-15fakesync1"
},
{
"binary_name": "walldns",
"binary_version": "1:1.05-15fakesync1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "djbdns",
"purl": "pkg:deb/ubuntu/djbdns?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"1:1.05-15ubuntu2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "axfrdns",
"binary_version": "1:1.05-15ubuntu2"
},
{
"binary_name": "djbdns-conf",
"binary_version": "1:1.05-15ubuntu2"
},
{
"binary_name": "djbdns-utils",
"binary_version": "1:1.05-15ubuntu2"
},
{
"binary_name": "dnscache",
"binary_version": "1:1.05-15ubuntu2"
},
{
"binary_name": "rbldns",
"binary_version": "1:1.05-15ubuntu2"
},
{
"binary_name": "tinydns",
"binary_version": "1:1.05-15ubuntu2"
},
{
"binary_name": "walldns",
"binary_version": "1:1.05-15ubuntu2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "djbdns",
"purl": "pkg:deb/ubuntu/djbdns?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"1:1.05-15ubuntu2",
"1:1.05-22ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "axfrdns",
"binary_version": "1:1.05-22ubuntu1"
},
{
"binary_name": "djbdns-conf",
"binary_version": "1:1.05-22ubuntu1"
},
{
"binary_name": "djbdns-utils",
"binary_version": "1:1.05-22ubuntu1"
},
{
"binary_name": "dnscache",
"binary_version": "1:1.05-22ubuntu1"
},
{
"binary_name": "rbldns",
"binary_version": "1:1.05-22ubuntu1"
},
{
"binary_name": "tinydns",
"binary_version": "1:1.05-22ubuntu1"
},
{
"binary_name": "walldns",
"binary_version": "1:1.05-22ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "djbdns",
"purl": "pkg:deb/ubuntu/djbdns?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"1:1.05-22ubuntu2",
"1:1.05-23fakesync1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "axfrdns",
"binary_version": "1:1.05-23fakesync1"
},
{
"binary_name": "djbdns-conf",
"binary_version": "1:1.05-23fakesync1"
},
{
"binary_name": "djbdns-utils",
"binary_version": "1:1.05-23fakesync1"
},
{
"binary_name": "dnscache",
"binary_version": "1:1.05-23fakesync1"
},
{
"binary_name": "rbldns",
"binary_version": "1:1.05-23fakesync1"
},
{
"binary_name": "tinydns",
"binary_version": "1:1.05-23fakesync1"
},
{
"binary_name": "walldns",
"binary_version": "1:1.05-23fakesync1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "djbdns",
"purl": "pkg:deb/ubuntu/djbdns?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1:1.05-22ubuntu1",
"1:1.05-22ubuntu2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2012/UBUNTU-CVE-2012-1191.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "axfrdns",
"binary_version": "1:1.05-22ubuntu2"
},
{
"binary_name": "djbdns-conf",
"binary_version": "1:1.05-22ubuntu2"
},
{
"binary_name": "djbdns-utils",
"binary_version": "1:1.05-22ubuntu2"
},
{
"binary_name": "dnscache",
"binary_version": "1:1.05-22ubuntu2"
},
{
"binary_name": "rbldns",
"binary_version": "1:1.05-22ubuntu2"
},
{
"binary_name": "tinydns",
"binary_version": "1:1.05-22ubuntu2"
},
{
"binary_name": "walldns",
"binary_version": "1:1.05-22ubuntu2"
}
]
}
}
],
"modified": "2026-10-17T12:52:36.325323985Z",
"provider": "osv",
"upstream": [
"CVE-2012-1191"
],
"references": [
"https://ubuntu.com/security/CVE-2012-1191",
"https://www.cve.org/CVERecord?id=CVE-2012-1191"
]
},
"related_cves": [
{
"value": "CVE-2012-1191",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 353246,
"published_at": "2012-02-17T22:55:00+00:00"
}