MediumFix available
openvswitch — security advisory
A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary IP addresses.
- Products
- openvswitch
- Affected versions
- 3.1.0-2
- Fixed versions
- 3.1.0-2+deb12u1, 3.1.2-1
- CVEs
- CVE-2023-5366
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 16:30 UTC · Revision 1
Source evidence
A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary IP addresses.
osv:DEBIAN-CVE-2023-5366
openvswitch
Fixed versions: 3.1.0-2+deb12u1
openvswitch
Fixed versions: 3.1.2-1
openvswitch
Fixed versions: 3.1.2-1
Complete source record
{
"id": "4ae8fb847e1a2aedb872ffb2da8907f8c350da6d086c0ec9e00f081360ad4bc5",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-5366",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2023-5366",
"summary": "A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary IP addresses.",
"evidence": "osv:DEBIAN-CVE-2023-5366",
"products": [
{
"name": {
"value": "openvswitch",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.1.0-2+deb12u1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "3.1.0-2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "openvswitch",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.1.2-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "openvswitch",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.1.2-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2023-5366",
"aliases": [
"DEBIAN-CVE-2023-5366"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.0-2+deb12u1"
}
]
}
],
"package": {
"name": "openvswitch",
"purl": "pkg:deb/debian/openvswitch?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.1.0-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-5366.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.2-1"
}
]
}
],
"package": {
"name": "openvswitch",
"purl": "pkg:deb/debian/openvswitch?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-5366.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.1.2-1"
}
]
}
],
"package": {
"name": "openvswitch",
"purl": "pkg:deb/debian/openvswitch?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-5366.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T18:03:08.988925437Z",
"provider": "osv",
"upstream": [
"CVE-2023-5366"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2023-5366"
]
},
"related_cves": [
{
"value": "CVE-2023-5366",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 457940,
"published_at": "2023-10-06T18:15:12.52+00:00"
}