cups — security advisory
The CUPS AppArmor profile incorrectly confined the dnssd backend due to use of hard links. A local attacker could possibly use this issue to escape confinement. This flaw affects versions prior to 2.2.7-1ubuntu2.1 in Ubuntu 18.04 LTS, prior to 2.2.4-7ubuntu3.1 in Ubuntu 17.10, prior to 2.1.3-4ubuntu0.5 in Ubuntu 16.04 LTS, and prior to 1.7.2-0ubuntu1.10 in Ubuntu 14.04 LTS.
- Products
- cups
- Affected versions
- Not specified
- Fixed versions
- 2.2.8-5
- CVEs
- CVE-2018-6553
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:31 UTC · Revision 1
Source evidence
The CUPS AppArmor profile incorrectly confined the dnssd backend due to use of hard links. A local attacker could possibly use this issue to escape confinement. This flaw affects versions prior to 2.2.7-1ubuntu2.1 in Ubuntu 18.04 LTS, prior to 2.2.4-7ubuntu3.1 in Ubuntu 17.10, prior to 2.1.3-4ubuntu0.5 in Ubuntu 16.04 LTS, and prior to 1.7.2-0ubuntu1.10 in Ubuntu 14.04 LTS.
osv:DEBIAN-CVE-2018-6553
cups
Fixed versions: 2.2.8-5
cups
Fixed versions: 2.2.8-5
cups
Fixed versions: 2.2.8-5
Complete source record
{
"id": "fd7b899ffcb140f97388046c376426e4d042ae45dab9cdd7fda06360f4b53797",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-6553",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2018-6553",
"summary": "The CUPS AppArmor profile incorrectly confined the dnssd backend due to use of hard links. A local attacker could possibly use this issue to escape confinement. This flaw affects versions prior to 2.2.7-1ubuntu2.1 in Ubuntu 18.04 LTS, prior to 2.2.4-7ubuntu3.1 in Ubuntu 17.10, prior to 2.1.3-4ubuntu0.5 in Ubuntu 16.04 LTS, and prior to 1.7.2-0ubuntu1.10 in Ubuntu 14.04 LTS.",
"evidence": "osv:DEBIAN-CVE-2018-6553",
"products": [
{
"name": {
"value": "cups",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.8-5",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "cups",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.8-5",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "cups",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.8-5",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2018-6553",
"aliases": [
"DEBIAN-CVE-2018-6553"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.8-5"
}
]
}
],
"package": {
"name": "cups",
"purl": "pkg:deb/debian/cups?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-6553.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.8-5"
}
]
}
],
"package": {
"name": "cups",
"purl": "pkg:deb/debian/cups?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-6553.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.8-5"
}
]
}
],
"package": {
"name": "cups",
"purl": "pkg:deb/debian/cups?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-6553.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:03:23.134604143Z",
"provider": "osv",
"upstream": [
"CVE-2018-6553"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2018-6553"
]
},
"related_cves": [
{
"value": "CVE-2018-6553",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 421330,
"published_at": "2018-08-10T15:29:01.187+00:00"
}