coturn — security advisory
An exploitable unsafe default configuration vulnerability exists in the TURN server functionality of coTURN prior to 4.5.0.9. By default, the TURN server allows relaying external traffic to the loopback interface of its own host. This can provide access to other private services running on that host, which can lead to further attacks. An attacker can set up a relay with a loopback address as the peer on an affected TURN server to trigger this vulnerability.
- Products
- coturn
- Affected versions
- Not specified
- Fixed versions
- 4.5.1.0-1
- CVEs
- CVE-2018-4058
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:30 UTC · Revision 1
Source evidence
An exploitable unsafe default configuration vulnerability exists in the TURN server functionality of coTURN prior to 4.5.0.9. By default, the TURN server allows relaying external traffic to the loopback interface of its own host. This can provide access to other private services running on that host, which can lead to further attacks. An attacker can set up a relay with a loopback address as the peer on an affected TURN server to trigger this vulnerability.
osv:DEBIAN-CVE-2018-4058
coturn
Fixed versions: 4.5.1.0-1
coturn
Fixed versions: 4.5.1.0-1
coturn
Fixed versions: 4.5.1.0-1
Complete source record
{
"id": "e11862f74b3d81a73154c49cd8bb7c08231ab154c80154777602ede5edea4b21",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-4058",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2018-4058",
"summary": "An exploitable unsafe default configuration vulnerability exists in the TURN server functionality of coTURN prior to 4.5.0.9. By default, the TURN server allows relaying external traffic to the loopback interface of its own host. This can provide access to other private services running on that host, which can lead to further attacks. An attacker can set up a relay with a loopback address as the peer on an affected TURN server to trigger this vulnerability.",
"evidence": "osv:DEBIAN-CVE-2018-4058",
"products": [
{
"name": {
"value": "coturn",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.5.1.0-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "coturn",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.5.1.0-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "coturn",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.5.1.0-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2018-4058",
"aliases": [
"DEBIAN-CVE-2018-4058"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.5.1.0-1"
}
]
}
],
"package": {
"name": "coturn",
"purl": "pkg:deb/debian/coturn?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-4058.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.5.1.0-1"
}
]
}
],
"package": {
"name": "coturn",
"purl": "pkg:deb/debian/coturn?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-4058.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.5.1.0-1"
}
]
}
],
"package": {
"name": "coturn",
"purl": "pkg:deb/debian/coturn?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-4058.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:03:22.136480638Z",
"provider": "osv",
"upstream": [
"CVE-2018-4058"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2018-4058"
]
},
"related_cves": [
{
"value": "CVE-2018-4058",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 421295,
"published_at": "2019-03-21T16:00:54.077+00:00"
}