openafs — security advisory
An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. Several data types used as RPC input variables were implemented as unbounded array types, limited only by the inherent 32-bit length field to 4 GB. An unauthenticated attacker could send, or claim to send, large input values and consume server resources waiting for those inputs, denying service to other valid connections.
- Products
- openafs
- Affected versions
- Not specified
- Fixed versions
- 1.8.2-1
- CVEs
- CVE-2018-16949
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:36 UTC · Revision 1
Source evidence
An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. Several data types used as RPC input variables were implemented as unbounded array types, limited only by the inherent 32-bit length field to 4 GB. An unauthenticated attacker could send, or claim to send, large input values and consume server resources waiting for those inputs, denying service to other valid connections.
osv:DEBIAN-CVE-2018-16949
openafs
Fixed versions: 1.8.2-1
openafs
Fixed versions: 1.8.2-1
Complete source record
{
"id": "a42fa8239abf54757749b4d4ff0380b03802b94467497c12d616c4fbb80e8a0f",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-16949",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2018-16949",
"summary": "An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. Several data types used as RPC input variables were implemented as unbounded array types, limited only by the inherent 32-bit length field to 4 GB. An unauthenticated attacker could send, or claim to send, large input values and consume server resources waiting for those inputs, denying service to other valid connections.",
"evidence": "osv:DEBIAN-CVE-2018-16949",
"products": [
{
"name": {
"value": "openafs",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.8.2-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openafs",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.8.2-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2018-16949",
"aliases": [
"DEBIAN-CVE-2018-16949"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.2-1"
}
]
}
],
"package": {
"name": "openafs",
"purl": "pkg:deb/debian/openafs?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-16949.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.2-1"
}
]
}
],
"package": {
"name": "openafs",
"purl": "pkg:deb/debian/openafs?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-16949.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:03:28.722754773Z",
"provider": "osv",
"upstream": [
"CVE-2018-16949"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2018-16949"
]
},
"related_cves": [
{
"value": "CVE-2018-16949",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 421633,
"published_at": "2018-09-12T01:29:00.623+00:00"
}