172 lines
6.8 KiB
JSON
172 lines
6.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-34177",
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"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
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"state": "PUBLISHED",
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"assignerShortName": "canonical",
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"dateReserved": "2026-03-26T09:24:08.448Z",
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"datePublished": "2026-04-09T09:15:27.532Z",
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"dateUpdated": "2026-04-09T12:12:48.251Z"
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},
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"containers": {
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"cna": {
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"title": "VM lowlevel restriction bypass via raw.apparmor and raw.qemu.conf",
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"affected": [
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{
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"vendor": "Canonical",
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"product": "lxd",
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"platforms": [
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"Linux"
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],
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"collectionURL": "https://github.com/canonical",
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"packageName": "lxd",
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"repo": "https://github.com/canonical/lxd",
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"programFiles": [
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"permissions.go"
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],
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"versions": [
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{
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"status": "affected",
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"version": "4.12.0",
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"lessThan": "5.0.7",
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"versionType": "semver"
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},
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{
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"status": "affected",
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"version": "5.1.0",
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"lessThan": "5.21.5",
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"versionType": "semver"
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},
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{
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"status": "affected",
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"version": "6.0.0",
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"lessThan": "6.8.0",
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"versionType": "semver"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-184",
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"description": "CWE-184 Incomplete list of disallowed inputs",
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"type": "CWE"
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}
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]
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "Canonical LXD versions 4.12 through 6.7 contain an incomplete denylist in isVMLowLevelOptionForbidden (lxd/project/limits/permissions.go), which omits raw.apparmor and raw.qemu.conf from the set of keys blocked under the restricted.virtual-machines.lowlevel=block project restriction. A remote attacker with can_edit permission on a VM instance in a restricted project can inject an AppArmor rule and a QEMU chardev configuration that bridges the LXD Unix socket into the guest VM, enabling privilege escalation to LXD cluster administrator and subsequently to host root."
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}
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],
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"references": [
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{
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"url": "https://github.com/canonical/lxd/security/advisories/GHSA-fm2x-c5qw-4h6f",
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"name": "VM lowlevel restriction bypass via raw.apparmor and raw.qemu.conf",
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"tags": [
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"vdb-entry",
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"vendor-advisory"
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]
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},
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{
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"url": "https://github.com/canonical/lxd/pull/17909",
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"name": "lxd: Prevent use of raw.apparmor and raw.qemu.conf when low level options are blocked",
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"tags": [
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"patch",
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"issue-tracking"
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]
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}
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],
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"metrics": [
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV3_1": {
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"version": "3.1",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "HIGH",
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"userInteraction": "NONE",
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"scope": "CHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"availabilityImpact": "HIGH",
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"baseSeverity": "CRITICAL",
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"baseScore": 9.1,
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H"
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}
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Miha Purg",
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"type": "finder"
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}
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],
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"source": {
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"discovery": "INTERNAL"
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},
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"providerMetadata": {
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"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
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"shortName": "canonical",
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"dateUpdated": "2026-04-09T09:15:27.532Z"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/canonical/lxd/security/advisories/GHSA-fm2x-c5qw-4h6f",
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"tags": [
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"exploit"
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]
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}
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],
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-04-09T12:12:43.482752Z",
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"id": "CVE-2026-34177",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-04-09T12:12:48.251Z"
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}
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}
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]
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}
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} |