155 lines
6.2 KiB
JSON
155 lines
6.2 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-2026-42488",
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"assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
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"state": "PUBLISHED",
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"assignerShortName": "XEN",
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"dateReserved": "2026-04-27T14:20:24.138Z",
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"datePublished": "2026-06-18T13:47:23.838Z",
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"dateUpdated": "2026-06-18T15:07:35.190Z"
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},
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"containers": {
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"cna": {
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"title": "x86: mismatched mapcache metadata",
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"datePublic": "2026-06-09T12:00:00.000Z",
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"descriptions": [
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{
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"lang": "en",
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"value": "Some shadow paging errors paths will switch the page-tables without\nupdating the currently running vCPU reference. This causes a mismatch\nbetween the loaded page-tables and the mapcache metadata which can lead\nto corruption of the mapcache."
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}
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],
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"impacts": [
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{
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"descriptions": [
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{
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"lang": "en",
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"value": "Privilege escalation, Denial of Service (DoS) affecting the entire host,\nand information leaks."
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}
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]
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}
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],
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"affected": [
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{
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"defaultStatus": "unknown",
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"product": "Xen",
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"vendor": "Xen",
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"versions": [
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{
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"status": "unknown",
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"version": "consult Xen advisory XSA-494"
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}
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]
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}
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],
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"configurations": [
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{
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"lang": "en",
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"value": "Xen 4.15 and onwards are vulnerable. Any Xen version with the fix for\nXSA-438 applied is vulnerable.\n\nOnly x86 systems are vulnerable. Only 64-bit PV guests can leverage the\nvulnerability, and only when running in shadow mode. Shadow mode would\nbe in use when migrating guests or as a workaround for XSA-273 (L1TF)."
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}
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],
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"workarounds": [
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{
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"lang": "en",
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"value": "Running only HVM or PVH guests will avoid the vulnerability.\n\nRunning PV guests in the PV shim will also avoid the vulnerability."
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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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"type": "finder",
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"value": "This issue was discovered by Roger Pau Monné of XenServer."
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}
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],
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"references": [
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{
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"url": "https://xenbits.xenproject.org/xsa/advisory-494.html"
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}
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],
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"providerMetadata": {
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"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
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"shortName": "XEN",
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"dateUpdated": "2026-06-18T13:47:23.838Z"
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}
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},
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"adp": [
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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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"type": "CWE",
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"cweId": "CWE-119",
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"lang": "en",
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"description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"
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}
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 8.1,
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"attackVector": "NETWORK",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"integrityImpact": "HIGH",
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"userInteraction": "NONE",
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"attackComplexity": "HIGH",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "HIGH"
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}
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},
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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": "2026-06-18T15:02:17.385668Z",
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"id": "CVE-2026-42488",
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"options": [
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{
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"Exploitation": "none"
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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": "2026-06-18T15:03:20.373Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "http://xenbits.xen.org/xsa/advisory-494.html"
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},
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{
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"url": "http://www.openwall.com/lists/oss-security/2026/06/09/14"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2026-06-18T15:07:35.190Z"
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}
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}
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]
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}
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} |