{"metadata": {"vulnerability": "CVE-2021-34737", "count": 28, "kinds": {"milestone": 5, "sighting": 1, "kev": 0, "other": 22}}, "data": [{"timestamp": "2021-06-15T00:00:00Z", "date_only": false, "value": "2021-06-15T00:00:00.000Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2021-34737", "field": "cveMetadata.dateReserved"}, {"timestamp": "2021-09-08T00:00:00Z", "date_only": false, "value": "2021-09-08T00:00:00.000Z", "kind": "other", "label": "Made public", "source": "cvelistv5 / cisco", "record": "CVE-2021-34737", "field": "containers.cna.datePublic"}, {"timestamp": "2021-09-08T15:43:07Z", "date_only": false, "value": "2021-09-08T15:43:07+00:00", "kind": "other", "label": "Advisory revision", "source": "csaf_cisco \u00b7 CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "record": "CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "field": "document.tracking.revision_history.0.date"}, {"timestamp": "2021-09-08T16:00:00Z", "date_only": false, "value": "2021-09-08T16:00:00", "kind": "other", "label": "DATE PUBLIC", "source": "cvelistv5 / cisco", "record": "CVE-2021-34737", "field": "containers.cna.x_legacyV4Record.CVE_data_meta.DATE_PUBLIC"}, {"timestamp": "2021-09-08T16:00:00Z", "date_only": false, "value": "2021-09-08T16:00:00", "kind": "other", "label": "DATE PUBLIC", "source": "gsd \u00b7 GSD-2021-34737", "record": "GSD-2021-34737", "field": "namespaces.cve.org.CVE_data_meta.DATE_PUBLIC"}, {"timestamp": "2021-09-08T16:00:00Z", "date_only": false, "value": "2021-09-08T16:00:00+00:00", "kind": "milestone", "label": "Published", "source": "csaf_cisco \u00b7 CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "record": "CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "field": "document.tracking.initial_release_date"}, {"timestamp": "2021-09-08T16:00:00Z", "date_only": false, "value": "2021-09-08T16:00:00+00:00", "kind": "other", "label": "Release date", "source": "csaf_cisco \u00b7 CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "record": "CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "field": "vulnerabilities.0.release_date"}, {"timestamp": "2021-09-09T00:00:00Z", "date_only": true, "value": "2021-09-09", "kind": "other", "label": "Submit Time", "source": "cnvd \u00b7 CNVD-2021-102363", "record": "CNVD-2021-102363", "field": "submitTime"}, {"timestamp": "2021-09-09T05:01:30Z", "date_only": false, "value": "2021-09-09T05:01:30.000Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / cisco", "record": "CVE-2021-34737", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2021-09-09T05:01:30.516Z", "date_only": false, "value": "2021-09-09T05:01:30.516Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2021-34737", "field": "cveMetadata.datePublished"}, {"timestamp": "2021-09-09T05:15:00Z", "date_only": false, "value": "2021-09-09T05:15:00Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-X6M9-RGR7-FM6P", "record": "GHSA-X6M9-RGR7-FM6P", "field": "database_specific.nvd_published_at"}, {"timestamp": "2021-09-09T05:15:00Z", "date_only": false, "value": "2021-09-09T05:15Z", "kind": "other", "label": "Published Date", "source": "gsd \u00b7 GSD-2021-34737", "record": "GSD-2021-34737", "field": "namespaces.nvd.nist.gov.publishedDate"}, {"timestamp": "2021-09-09T05:15:11.963Z", "date_only": false, "value": "2021-09-09T05:15:11.963", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-34737", "record": "FKIE_CVE-2021-34737", "field": "published"}, {"timestamp": "2021-09-09T12:29:41Z", "date_only": false, "value": "2021-09-09T12:29:41.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/28561", "record": "CVE-2021-34737", "field": "creation_timestamp", "uuid": "b3d8773c-81ec-429a-9b23-c3165c66a5b5", "content": "\u203c CVE-2021-34737 \u203c\n\nA vulnerability in the DHCP version 4 (DHCPv4) server feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to trigger a crash of the dhcpd process, resulting in a denial of service (DoS) condition. This vulnerability exists because certain DHCPv4 messages are improperly validated when they are processed by an affected device. An attacker could exploit this vulnerability by sending a malformed DHCPv4 message to an affected device. A successful exploit could allow the attacker to cause a NULL pointer dereference, resulting in a crash of the dhcpd process. While the dhcpd process is restarting, which may take up to approximately two minutes, DHCPv4 server services are unavailable on the affected device. This could temporarily prevent network access to clients that join the network during that time period. Note: Only the dhcpd process crashes and eventually restarts automatically. The router does not reload.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/28561"}, {"timestamp": "2021-09-22T15:10:00Z", "date_only": false, "value": "2021-09-22T15:10Z", "kind": "other", "label": "Last Modified Date", "source": "gsd \u00b7 GSD-2021-34737", "record": "GSD-2021-34737", "field": "namespaces.nvd.nist.gov.lastModifiedDate"}, {"timestamp": "2021-10-20T17:55:23Z", "date_only": false, "value": "2021-10-20T17:55:23+00:00", "kind": "other", "label": "Advisory revision", "source": "csaf_cisco \u00b7 CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "record": "CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "field": "document.tracking.revision_history.1.date"}, {"timestamp": "2021-10-20T17:55:23Z", "date_only": false, "value": "2021-10-20T17:55:23+00:00", "kind": "other", "label": "Updated", "source": "csaf_cisco \u00b7 CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "record": "CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "field": "document.tracking.current_release_date"}, {"timestamp": "2021-12-27T00:00:00Z", "date_only": true, "value": "2021-12-27", "kind": "other", "label": "Open Time", "source": "cnvd \u00b7 CNVD-2021-102363", "record": "CNVD-2021-102363", "field": "openTime"}, {"timestamp": "2022-05-24T19:14:06Z", "date_only": false, "value": "2022-05-24T19:14:06Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-X6M9-RGR7-FM6P", "record": "GHSA-X6M9-RGR7-FM6P", "field": "published"}, {"timestamp": "2022-05-24T19:14:06Z", "date_only": false, "value": "2022-05-24T19:14:06Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-X6M9-RGR7-FM6P", "record": "GHSA-X6M9-RGR7-FM6P", "field": "modified"}, {"timestamp": "2023-12-13T01:23:14.156Z", "date_only": false, "value": "2023-12-13T01:23:14.156476Z", "kind": "other", "label": "Updated", "source": "gsd \u00b7 GSD-2021-34737", "record": "GSD-2021-34737", "field": "gsd.osvSchema.modified"}, {"timestamp": "2024-05-10T23:07:47Z", "date_only": false, "value": "2024-05-10T23:07:47+00:00", "kind": "other", "label": "Document generated", "source": "csaf_cisco \u00b7 CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "record": "CISCO-SA-IOSXR-DHCP-DOS-PJPVRELU", "field": "document.tracking.generator.date"}, {"timestamp": "2024-08-04T00:19:48.091Z", "date_only": false, "value": "2024-08-04T00:19:48.091Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CVE", "record": "CVE-2021-34737", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2024-11-07T21:54:21.168Z", "date_only": false, "value": "2024-11-07T21:54:21.168817Z", "kind": "other", "label": "Recorded", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2021-34737", "field": "containers.adp.1.metrics.0.other.content.timestamp"}, {"timestamp": "2024-11-07T21:54:21.168Z", "date_only": false, "value": "2024-11-07T21:54:21.168817Z", "kind": "other", "label": "Recorded", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-34737", "record": "FKIE_CVE-2021-34737", "field": "metrics.ssvcV203.0.ssvcData.timestamp"}, {"timestamp": "2024-11-07T22:00:23.958Z", "date_only": false, "value": "2024-11-07T22:00:23.958Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2021-34737", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2024-11-07T22:00:23.958Z", "date_only": false, "value": "2024-11-07T22:00:23.958Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CISA-ADP", "record": "CVE-2021-34737", "field": "containers.adp.1.providerMetadata.dateUpdated"}, {"timestamp": "2026-06-17T03:56:27.617Z", "date_only": false, "value": "2026-06-17T03:56:27.617", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-34737", "record": "FKIE_CVE-2021-34737", "field": "lastModified"}]}