ubuntu-cve-2021-3559
Vulnerability from osv_ubuntu
Published
2021-05-24 12:15
Modified
2025-07-16 04:56
Summary
Details
A flaw was found in libvirt in the virConnectListAllNodeDevices API in versions before 7.0.0. It only affects hosts with a PCI device and driver that supports mediated devices (e.g., GRID driver). This flaw could be used by an unprivileged client with a read-only connection to crash the libvirt daemon by executing the 'nodedev-list' virsh command. The highest threat from this vulnerability is to system availability.
Severity
6.5 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnss-libvirt",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libnss-libvirt-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-bin",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-clients",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-clients-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-driver-storage-gluster",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-driver-storage-gluster-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-driver-storage-rbd",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-driver-storage-rbd-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-driver-storage-sheepdog",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-driver-storage-sheepdog-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-driver-storage-zfs",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-driver-storage-zfs-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-system",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-daemon-system-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-dev",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-doc",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-sanlock",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-sanlock-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-wireshark",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt-wireshark-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt0",
"binary_version": "4.0.0-1ubuntu8.19"
},
{
"binary_name": "libvirt0-dbgsym",
"binary_version": "4.0.0-1ubuntu8.19"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "libvirt",
"purl": "pkg:deb/ubuntu/libvirt@4.0.0-1ubuntu8.19?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.0.0-1ubuntu8.19"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.6.0-1ubuntu5",
"3.6.0-1ubuntu6",
"4.0.0-1ubuntu1",
"4.0.0-1ubuntu2",
"4.0.0-1ubuntu3",
"4.0.0-1ubuntu4",
"4.0.0-1ubuntu5",
"4.0.0-1ubuntu6",
"4.0.0-1ubuntu7",
"4.0.0-1ubuntu8",
"4.0.0-1ubuntu8.1",
"4.0.0-1ubuntu8.2",
"4.0.0-1ubuntu8.3",
"4.0.0-1ubuntu8.4",
"4.0.0-1ubuntu8.5",
"4.0.0-1ubuntu8.6",
"4.0.0-1ubuntu8.7",
"4.0.0-1ubuntu8.8",
"4.0.0-1ubuntu8.9",
"4.0.0-1ubuntu8.10",
"4.0.0-1ubuntu8.11",
"4.0.0-1ubuntu8.12",
"4.0.0-1ubuntu8.13",
"4.0.0-1ubuntu8.14",
"4.0.0-1ubuntu8.15",
"4.0.0-1ubuntu8.16",
"4.0.0-1ubuntu8.17"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnss-libvirt",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libnss-libvirt-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-clients",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-clients-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-lxc",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-lxc-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-qemu",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-qemu-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-storage-gluster",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-storage-gluster-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-storage-rbd",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-storage-rbd-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-storage-zfs",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-storage-zfs-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-vbox",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-vbox-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-xen",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-driver-xen-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-system",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-system-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-system-systemd",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-daemon-system-sysv",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-dev",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-doc",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-sanlock",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-sanlock-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-wireshark",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt-wireshark-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt0",
"binary_version": "6.0.0-0ubuntu8.9"
},
{
"binary_name": "libvirt0-dbgsym",
"binary_version": "6.0.0-0ubuntu8.9"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "libvirt",
"purl": "pkg:deb/ubuntu/libvirt@6.0.0-0ubuntu8.9?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.0.0-0ubuntu8.9"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.4.0-0ubuntu5",
"6.0.0-0ubuntu1",
"6.0.0-0ubuntu2",
"6.0.0-0ubuntu3",
"6.0.0-0ubuntu4",
"6.0.0-0ubuntu5",
"6.0.0-0ubuntu6",
"6.0.0-0ubuntu7",
"6.0.0-0ubuntu8",
"6.0.0-0ubuntu8.1",
"6.0.0-0ubuntu8.2",
"6.0.0-0ubuntu8.3",
"6.0.0-0ubuntu8.4",
"6.0.0-0ubuntu8.5",
"6.0.0-0ubuntu8.7",
"6.0.0-0ubuntu8.8"
]
}
],
"aliases": [],
"details": "A flaw was found in libvirt in the virConnectListAllNodeDevices API in versions before 7.0.0. It only affects hosts with a PCI device and driver that supports mediated devices (e.g., GRID driver). This flaw could be used by an unprivileged client with a read-only connection to crash the libvirt daemon by executing the \u0027nodedev-list\u0027 virsh command. The highest threat from this vulnerability is to system availability.",
"id": "UBUNTU-CVE-2021-3559",
"modified": "2025-07-16T04:56:39Z",
"published": "2021-05-24T12:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3559"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1962306"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3559"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2021-3559"
],
"withdrawn": "2025-07-18T16:46:26Z"
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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