187 lines
8.5 KiB
JSON
187 lines
8.5 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-2026-86408",
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"assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
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"state": "PUBLISHED",
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"assignerShortName": "CIRCL",
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"dateReserved": "2026-09-07T12:11:12.888Z",
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"datePublished": "2026-09-07T12:11:18.233Z",
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"dateUpdated": "2026-09-08T14:49:54.747Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"defaultStatus": "unaffected",
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"product": "MISP",
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"programFiles": [
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"app/Controller/CryptographicKeysController.php"
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],
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"repo": "https://github.com/MISP/MISP",
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"vendor": "MISP",
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"versions": [
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{
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"lessThanOrEqual": "2.5.45",
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"status": "affected",
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"version": "0",
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"versionType": "semver"
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}
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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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"type": "finder",
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"value": "Scottish Government - National Cyber Team"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "iglocska"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "Claude Opus 5 (1M context)"
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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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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Affected versions of MISP do not enforce parent-event visibility when serving cryptographic keys through <code>CryptographicKeysController::view()</code>.</p>\n<p>The vulnerable handler queried <code>CryptographicKey</code> directly using the supplied key ID and selected sensitive fields such as:</p>\n<ul>\n<li>\n<code>type</code>\n</li>\n<li>\n<code>key_data</code>\n</li>\n<li>\n<code>fingerprint</code>\n</li>\n</ul>\n<p>but did not fetch or authorize the associated parent event first.</p>\n<p>The upstream commit explicitly states that <code>cryptographicKeys/view</code> could return a <strong>protected event’s signing key to any authenticated user</strong>.</p>\n<p>The fix adds <code>parent_id</code> and <code>parent_type</code> to the lookup and then enforces authorization through the associated event using <code>fetchSimpleEvent($user, parent_id)</code>. If the parent is not an Event, access is limited to site administrators.</p>Version affected: ≤2.5.45<br>"
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}
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],
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"value": "Affected versions of MISP do not enforce parent-event visibility when serving cryptographic keys through CryptographicKeysController::view().\n\n\nThe vulnerable handler queried CryptographicKey directly using the supplied key ID and selected sensitive fields such as:\n\n\n\n * \ntype\n\n\n * \nkey_data\n\n\n * \nfingerprint\n\n\n\n\n\nbut did not fetch or authorize the associated parent event first.\n\n\nThe upstream commit explicitly states that cryptographicKeys/view could return a protected event’s signing key to any authenticated user.\n\n\nThe fix adds parent_id and parent_type to the lookup and then enforces authorization through the associated event using fetchSimpleEvent($user, parent_id). If the parent is not an Event, access is limited to site administrators.\n\nVersion affected: ≤2.5.45"
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-1",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"
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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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"cvssV4_0": {
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"attackVector": "NETWORK",
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"baseScore": 7.1,
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"baseSeverity": "HIGH",
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"privilegesRequired": "LOW",
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"providerUrgency": "NOT_DEFINED",
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"subAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"userInteraction": "NONE",
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"valueDensity": "NOT_DEFINED",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "NONE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "NONE",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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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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}
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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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"cweId": "CWE-862",
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"description": "CWE-862 Missing Authorization",
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"lang": "en",
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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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"cweId": "CWE-639",
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"description": "CWE-639 Authorization Bypass Through User-Controlled Key",
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"lang": "en",
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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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"providerMetadata": {
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"orgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
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"shortName": "CIRCL",
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"dateUpdated": "2026-09-07T12:11:18.233Z"
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},
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"references": [
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/MISP/MISP/commit/2edde619b"
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"title": "MISP Missing Authorization in Cryptographic Key View Exposes Signing Keys from Protected Events",
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"x_generator": {
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"engine": "Vulnogram 0.2.0"
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}
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},
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"adp": [
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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": "2026-09-08T14:49:41.763889Z",
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"id": "CVE-2026-86408",
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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": "partial"
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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": "2026-09-08T14:49:54.747Z"
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}
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}
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]
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}
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} |