{"metadata": {"vulnerability": "CVE-2021-27861", "count": 33, "kinds": {"milestone": 6, "sighting": 2, "kev": 0, "other": 25}}, "data": [{"timestamp": "2021-03-01T00:00:00Z", "date_only": false, "value": "2021-03-01T00:00:00.000Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2021-27861", "field": "cveMetadata.dateReserved"}, {"timestamp": "2022-09-27T00:00:00Z", "date_only": false, "value": "2022-09-27T00:00:00.000Z", "kind": "other", "label": "Made public", "source": "cvelistv5 / certcc", "record": "CVE-2021-27861", "field": "containers.cna.datePublic"}, {"timestamp": "2022-09-27T01:00:00Z", "date_only": false, "value": "2022-09-27T01:00:00.000Z", "kind": "other", "label": "DATE PUBLIC", "source": "gsd \u00b7 GSD-2021-27861", "record": "GSD-2021-27861", "field": "namespaces.cve.org.CVE_data_meta.DATE_PUBLIC"}, {"timestamp": "2022-09-27T16:00:00Z", "date_only": false, "value": "2022-09-27T16:00:00+00:00", "kind": "milestone", "label": "Published", "source": "csaf_cisco \u00b7 CISCO-SA-VU855201-J3Z8CKTX", "record": "CISCO-SA-VU855201-J3Z8CKTX", "field": "document.tracking.initial_release_date"}, {"timestamp": "2022-09-27T16:38:06Z", "date_only": false, "value": "2022-09-27T16:38:06+00:00", "kind": "other", "label": "Advisory revision", "source": "csaf_cisco \u00b7 CISCO-SA-VU855201-J3Z8CKTX", "record": "CISCO-SA-VU855201-J3Z8CKTX", "field": "document.tracking.revision_history.0.date"}, {"timestamp": "2022-09-27T18:40:13.742Z", "date_only": false, "value": "2022-09-27T18:40:13.742Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2021-27861", "field": "cveMetadata.datePublished"}, {"timestamp": "2022-09-27T19:15:00Z", "date_only": false, "value": "2022-09-27T19:15:00Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-WCC2-HC4J-M2WC", "record": "GHSA-WCC2-HC4J-M2WC", "field": "database_specific.nvd_published_at"}, {"timestamp": "2022-09-27T19:15:00Z", "date_only": false, "value": "2022-09-27T19:15Z", "kind": "other", "label": "Published Date", "source": "gsd \u00b7 GSD-2021-27861", "record": "GSD-2021-27861", "field": "namespaces.nvd.nist.gov.publishedDate"}, {"timestamp": "2022-09-27T19:15:09.330Z", "date_only": false, "value": "2022-09-27T19:15:09.330", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-27861", "record": "FKIE_CVE-2021-27861", "field": "published"}, {"timestamp": "2022-09-27T22:00:00Z", "date_only": false, "value": "2022-09-27T22:00:00.000+00:00", "kind": "other", "label": "Advisory revision", "source": "csaf_certbund \u00b7 WID-SEC-W-2022-1551", "record": "WID-SEC-W-2022-1551", "field": "document.tracking.revision_history.0.date"}, {"timestamp": "2022-09-27T22:00:00Z", "date_only": false, "value": "2022-09-27T22:00:00.000+00:00", "kind": "milestone", "label": "Published", "source": "csaf_certbund \u00b7 WID-SEC-W-2022-1551", "record": "WID-SEC-W-2022-1551", "field": "document.tracking.initial_release_date"}, {"timestamp": "2022-09-27T22:00:00Z", "date_only": false, "value": "2022-09-27T22:00:00.000+00:00", "kind": "other", "label": "Release date", "source": "csaf_certbund \u00b7 WID-SEC-W-2022-1551", "record": "WID-SEC-W-2022-1551", "field": "vulnerabilities.0.release_date"}, {"timestamp": "2022-09-27T22:28:43Z", "date_only": false, "value": "2022-09-27T22:28:43.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/50533", "record": "CVE-2021-27861", "field": "creation_timestamp", "uuid": "82b5fcd1-21ae-4275-bcab-06b4cd6527e2", "content": "\u203c CVE-2021-27861 \u203c\n\nLayer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length (and optionally VLAN0 headers)\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/50533"}, {"timestamp": "2022-09-28T00:00:18Z", "date_only": false, "value": "2022-09-28T00:00:18Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-WCC2-HC4J-M2WC", "record": "GHSA-WCC2-HC4J-M2WC", "field": "published"}, {"timestamp": "2022-09-29T17:20:04Z", "date_only": false, "value": "2022-09-29T17:20:04.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/true_secator/3491", "record": "CVE-2021-27861", "field": "creation_timestamp", "uuid": "afa54b3c-df17-43fa-a150-fa3946c0b98e", "content": "\u041e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u043e \u0447\u0435\u0442\u044b\u0440\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u0448\u0438\u0440\u043e\u043a\u043e \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u043e\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 Ethernet VLAN Stacking.\n\nVLAN Stacking \u2014 \u0444\u0443\u043d\u043a\u0446\u0438\u044f \u0441\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0445 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432 \u0438 \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u043e\u0440\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f\u043c \u0438\u043d\u043a\u0430\u043f\u0441\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u043e\u0432 VLAN \u0432 \u043e\u0434\u043d\u043e \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u0435 VLAN.\n\n\u041e\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u0445 \u0441\u043e\u043e\u0431\u0449\u0438\u043b \u043a\u043e\u043e\u0440\u0434\u0438\u043d\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0439 \u0446\u0435\u043d\u0442\u0440 CERT, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u0438\u0432 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f\u043c \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \u0432\u0440\u0435\u043c\u044f \u043d\u0430 \u0440\u0430\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435, \u0440\u0435\u0430\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0438 \u0432\u044b\u043f\u0443\u0441\u043a \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0445 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438.\n\n\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0442 \u0432 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430\u0445 \u0438\u043d\u043a\u0430\u043f\u0441\u0443\u043b\u044f\u0446\u0438\u0438 Ethernet, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0441\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u0442\u044c \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0439 \u0441\u0435\u0442\u0438 (VLAN). \n\n\u0417\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a, \u043d\u0435 \u043f\u0440\u043e\u0448\u0435\u0434\u0448\u0438\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443 \u043f\u043e\u0434\u043b\u0438\u043d\u043d\u043e\u0441\u0442\u0438, \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043a\u043e\u043c\u0431\u0438\u043d\u0430\u0446\u0438\u044e \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u043e\u0432 VLAN \u0438 LLC/SNAP \u0434\u043b\u044f \u043e\u0431\u0445\u043e\u0434\u0430 \u0441\u0440\u0435\u0434\u0441\u0442\u0432 \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u0438 L2, \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a \u0437\u0430\u0449\u0438\u0442\u0430 IPv6 RA, \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 ARP, \u0437\u0430\u0449\u0438\u0442\u0430 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0441\u043e\u0441\u0435\u0434\u0435\u0439 IPv6 \u0438 \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u0435 DHCP.\n\n\u041d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043a\u0438 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u044e\u0442 \u0446\u0435\u043b\u044b\u0439 \u043f\u0443\u043b \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432, \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u043e\u0440\u043e\u0432 \u0438 \u043c\u0430\u0440\u0448\u0440\u0443\u0442\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u044b \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c\u044e 2 \u0443\u0440\u043e\u0432\u043d\u044f (L2) \u0434\u043b\u044f \u0444\u0438\u043b\u044c\u0442\u0440\u0430\u0446\u0438\u0438 \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u0438 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u0441\u0435\u0442\u0438.\n\n\u041e\u0448\u0438\u0431\u043a\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0430\u043c \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u0430\u0442\u0430\u043a\u0438 \u0442\u0438\u043f\u0430 \u00ab\u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438\u00bb (DoS) \u0438\u043b\u0438 \u00ab\u0447\u0435\u043b\u043e\u0432\u0435\u043a \u043f\u043e\u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0435\u00bb (MitM) \u0437\u0430 \u0441\u0447\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u0441\u043e\u0437\u0434\u0430\u043d\u043d\u044b\u0445 \u043f\u0430\u043a\u0435\u0442\u043e\u0432.\n\n\u041e\u0448\u0438\u0431\u043a\u0438 \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u043a\u0430\u043a CVE-2021-27853, CVE-2021-27854, CVE-2021-27861 \u0438 CVE-2021-27862, \u043a\u0430\u0436\u0434\u0430\u044f \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u0442\u0438\u043f \u043e\u0431\u0445\u043e\u0434\u0430 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 2 \u0443\u0440\u043e\u0432\u043d\u044f.\n\nCisco \u0438 Juniper Networks \u0443\u0436\u0435 \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u043b\u0438, \u0447\u0442\u043e \u0440\u044f\u0434 \u0438\u0437 \u0438\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 \u043f\u043e\u0434\u0432\u0435\u0440\u0436\u0435\u043d \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u043c, \u043d\u043e \u043c\u043d\u043e\u0433\u0438\u0435 \u0434\u0440\u0443\u0433\u0438\u0435 \u043f\u043e\u0441\u0442\u0430\u0432\u0449\u0438\u043a\u0438 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 \u0435\u0449\u0435 \u043d\u0435 \u0437\u0430\u0432\u0435\u0440\u0448\u0438\u043b\u0438 \u0441\u0432\u043e\u0435 \u0440\u0430\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0435 \u0438 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u0443\u0433\u0440\u043e\u0437\u0430 \u0432\u043e\u0437\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u043e\u0441\u0442\u0430\u0435\u0442\u0441\u044f \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439.", "url": "https://t.me/true_secator/3491"}, {"timestamp": "2022-10-05T18:16:08Z", "date_only": false, "value": "2022-10-05T18:16:08+00:00", "kind": "other", "label": "Advisory revision", "source": "csaf_cisco \u00b7 CISCO-SA-VU855201-J3Z8CKTX", "record": "CISCO-SA-VU855201-J3Z8CKTX", "field": "document.tracking.revision_history.1.date"}, {"timestamp": "2022-10-05T18:16:08Z", "date_only": false, "value": "2022-10-05T18:16:08+00:00", "kind": "other", "label": "Updated", "source": "csaf_cisco \u00b7 CISCO-SA-VU855201-J3Z8CKTX", 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