{"id":"CVE-2024-2182","aliases":["DEBIAN-CVE-2024-2182","EUVD-2024-27144","GHSA-p67c-35g3-9pqc","RHSA-2024:1385","RHSA-2024:1386","RHSA-2024:1387","RHSA-2024:1388","RHSA-2024:1390","RHSA-2024:1391","RHSA-2024:1392","RHSA-2024:1393","RHSA-2024:1394","RHSA-2024:4035","SUSE-SU-2026:0280-1","SUSE-SU-2026:0290-1","SUSE-SU-2026:0619-1","SUSE-SU-2026:0660-1","SUSE-SU-2026:20049-1","SUSE-SU-2026:20061-1","UBUNTU-CVE-2024-2182","USN-6691-1"],"status":"published","title":"Ovn: insufficient validation of bfd packets may lead to denial of service","description":"A flaw was found in the Open Virtual Network (OVN). In OVN clusters where BFD is used between hypervisors for high availability, an attacker can inject specially crafted BFD packets from inside unprivileged workloads, including virtual machines or containers, that can trigger a denial of service.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00783,"percentile":0.56266,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-346"],"published":"2024-03-12T00:00:00Z","modified":"2026-11-02T12:01:23Z","fixes":[{"ecosystem":"Debian:12","package":"ovn","fixed_in":["23.03.1-1~deb12u2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"ovn","fixed_in":["24.03.1-1"],"sources":["osv"]},{"ecosystem":"Red Hat:enterprise_linux:8::fastdatapath","package":"ovn23.06","fixed_in":["0:23.06.1-112.el8fdp"],"sources":["osv"]},{"ecosystem":"Red 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tps://www.suse.com/security/cve/CVE-2023-3153","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-3966","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-5366","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-2182","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-0650","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20260290-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20260619-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20260660-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202620049-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1236353","tags":["report"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202620061-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2024-2182","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-6691-1","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2024-2182","title":"Ovn: 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In OVN clusters where BFD is used between hypervisors for high availability, an attacker can inject specially crafted BFD packets from inside unprivileged workloads, including virtual machines or containers, that can trigger a denial of service.","status":"published","published":"2024-03-12T16:18:31.829Z","modified":"2026-10-19T10:24:39.836Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:34:09.897248Z"}],"euvd":[{"id":"EUVD-2024-27144","description":"A flaw was found in the Open Virtual Network (OVN). In OVN clusters where BFD is used between hypervisors for high availability, an attacker can inject specially crafted BFD packets from inside unprivileged workloads, including virtual machines or containers, that can trigger a denial of service.","status":"published","published":"2024-03-12T16:18:31Z","modified":"2026-10-19T10:24:39Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:59:51.629031Z"}],"ghsa":[{"id":"GHSA-p67c-35g3-9pqc","title":"A flaw was found in the Open Virtual Network (OVN). In OVN clusters where BFD is used between...","description":"A flaw was found in the Open Virtual Network (OVN). 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In OVN clusters where BFD is used between hypervisors for high availability, an attacker can inject specially crafted BFD packets from inside unprivileged workloads, including virtual machines or containers, that can trigger a denial of service.","status":"published","published":"2024-03-12T17:15:59.19Z","modified":"2026-10-19T11:17:15.617Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:09:40.831473Z"}],"osv":[{"id":"DEBIAN-CVE-2024-2182","description":"A flaw was found in the Open Virtual Network (OVN). In OVN clusters where BFD is used between hypervisors for high availability, an attacker can inject specially crafted BFD packets from inside unprivileged workloads, including virtual machines or containers, that can trigger a denial of service.","status":"published","published":"2024-03-12T17:15:59.19Z","modified":"2026-11-02T12:01:23.774910599Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:45:41.849198Z"},{"id":"RHSA-2024:1385","title":"Red Hat Security Advisory: ovn23.06 security update","status":"published","published":"2024-09-13T23:56:38Z","modified":"2026-10-20T10:02:37Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2024:1386","title":"Red Hat Security Advisory: ovn22.12 security update","status":"published","published":"2024-09-13T23:56:21Z","modified":"2026-10-20T10:02:37Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2024:1387","title":"Red Hat Security Advisory: ovn22.03 security update","status":"published","published":"2024-09-13T23:56:30Z","modified":"2026-10-20T10:02:38Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2024:1388","title":"Red Hat Security Advisory: ovn23.03 security update","status":"published","published":"2024-09-13T23:56:15Z","modified":"2026-10-20T10:02:39Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2024:1390","title":"Red Hat Security Advisory: ovn23.09 security update","status":"published","published":"2024-09-13T23:55:34Z","modified":"2026-10-20T10:02:39Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2024:1391","title":"Red Hat Security Advisory: ovn23.06 security update","status":"published","published":"2024-09-13T23:55:43Z","modified":"2026-10-20T10:02:39Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2024:1392","title":"Red Hat Security Advisory: ovn22.12 security update","status":"published","published":"2024-09-13T23:56:07Z","modified":"2026-10-20T10:02:40Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2024:1393","title":"Red Hat Security Advisory: ovn22.03 security update","status":"published","published":"2024-09-13T23:55:51Z","modified":"2026-10-20T10:02:41Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2024:1394","title":"Red Hat Security Advisory: ovn23.03 security update","status":"published","published":"2024-09-13T23:55:59Z","modified":"2026-10-20T10:02:42Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2024:4035","title":"Red Hat Security Advisory: ovn-2021 security update","status":"published","published":"2024-09-13T23:59:56Z","modified":"2026-10-20T10:02:53Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:14.03234Z"},{"id":"UBUNTU-CVE-2024-2182","description":"A flaw was found in the Open Virtual Network (OVN). In OVN clusters where BFD is used between hypervisors for high availability, an attacker can inject specially crafted BFD packets from inside unprivileged workloads, including virtual machines or containers, that can trigger a denial of service.","status":"published","published":"2024-03-12T00:00:00Z","modified":"2026-02-04T02:37:29.427918Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:54:42.68848Z"},{"id":"CVE-2024-2182","description":"A flaw was found in the Open Virtual Network (OVN). In OVN clusters where BFD is used between hypervisors for high availability, an attacker can inject specially crafted BFD packets from inside unprivileged workloads, including virtual machines or containers, that can trigger a denial of service.","status":"published","published":"2024-03-12T17:15:59Z","modified":"2026-07-13T14:14:35.106690435Z","updated_at":"2026-11-02T15:44:38.577405Z"},{"id":"SUSE-SU-2026:0280-1","title":"Security update for openvswitch","description":"This update for openvswitch fixes the following issues:\n\nUpdate to v3.1.7:\n\n - CVE-2023-3966: openvswitch, openvswitch3: Invalid memory access in Geneve with HW offload (bsc#1219465).\n - CVE-2024-2182: openvswitch: ov: insufficient validation of incoming BFD packets may lead to denial of service (bsc#1255435).\n - CVE-2023-1668: openvswitch: remote traffic denial of service via crafted packets with IP proto 0 (bsc#1210054).\n - CVE-2023-3153: openvswitch,openvswitch3: service monitor MAC flow is not rate limited (bsc#1212125).\n - CVE-2023-5366: openvswitch: missing masks on a final stage with ports trie (bsc#1216002).\n","status":"published","published":"2026-01-23T15:33:56Z","modified":"2026-03-23T04:51:42.427758Z","updated_at":"2026-11-02T15:54:00.846737Z"},{"id":"SUSE-SU-2026:0290-1","title":"Security update for openvswitch3","description":"This update for openvswitch3 fixes the following issues:\n\nUpdate to v3.1.7:\n\n - CVE-2023-3966: openvswitch, openvswitch3: Invalid memory access in Geneve with HW offload (bsc#1219465).\n - CVE-2024-2182: openvswitch: ov: insufficient validation of incoming BFD packets may lead to denial of service (bsc#1255435).\n - CVE-2023-1668: openvswitch: remote traffic denial of service via crafted packets with IP proto 0 (bsc#1210054).\n - CVE-2023-3153: openvswitch,openvswitch3: service monitor MAC flow is not rate limited (bsc#1212125).\n - CVE-2023-5366: openvswitch: missing masks on a final stage with ports trie (bsc#1216002).\n","status":"published","published":"2026-01-26T10:34:13Z","modified":"2026-03-23T04:52:06.266664Z","updated_at":"2026-11-02T15:54:00.846737Z"},{"id":"SUSE-SU-2026:0619-1","title":"Security update for openvswitch","description":"This update for openvswitch fixes the following issues:\n\n- CVE-2024-2182: Fixed insufficient validation of incoming \n  BFD packets may lead to denial of service (bsc#1255435)\n","status":"published","published":"2026-02-24T15:36:20Z","modified":"2026-02-26T16:16:52.160732Z","updated_at":"2026-11-02T15:54:00.846737Z"},{"id":"SUSE-SU-2026:0660-1","title":"Security update for openvswitch","description":"This update for openvswitch fixes the following issues:\n\n- CVE-2024-2182: Fixed insufficient validation of incoming \n  BFD packets may lead to denial of service (bsc#1255435)\n","status":"withdrawn","published":"2026-02-26T15:09:19Z","modified":"2026-07-13T14:00:32.654127642Z","updated_at":"2026-11-02T15:54:00.846737Z"},{"id":"SUSE-SU-2026:20049-1","title":"Security update for openvswitch","description":"This update for openvswitch fixes the following issues:\n\nUpdate OpenvSwitch to v3.1.7 and OVN to v23.03.3.\n\nSecurity issues fixed:\n\n- CVE-2023-3966: ovs: invalid memory access and potential denial of service via specially crafted Geneve packets\n  (bsc#1219465).\n- CVE-2023-5366: ovs: OpenFlow rules may be bypassed via specially crafted ICMPv6 Neighbor Advertisement packets sent\n  between virtual machines t(bsc#1216002).\n- CVE-2024-2182: ovn: denial of service via injection of specially crafted BFD packets from inside unprivileged\n  workloads (bsc#1255435).\n- CVE-2025-0650: ovn: egress ACLs may be bypassed via specially crafted UDP packet (bsc#1236353).\n\nOther updates and bugfixes:\n\n- OpenvSwitch:\n  * https://www.openvswitch.org/releases/NEWS-3.1.7.txt\n  * v3.1.7\n    - Bug fixes\n    - OVS validated with DPDK 22.11.7.\n  * v3.1.6\n    - Bug fixes\n    - OVS validated with DPDK 22.11.6.\n  * v3.1.5\n    - Bug fixes\n    - OVS validated with DPDK 22.11.5.\n  * v3.1.4\n    - Bug fixes\n    - OVS validated with DPDK 22.11.4.\n- OVN:\n  * https://github.com/ovn-org/ovn/blob/branch-23.03/NEWS\n  * v23.03.3\n    - Bug fixes\n    - Add \"garp-max-timeout-sec\" config option to vswitchd external-ids to cap the time between when ovn-controller\n      sends gARP packets.\n  * v23.03.1\n    - Bug fixes\n    - CT entries are not flushed by default anymore whenever a load balancer backend is removed. A new, per-LB, option\n      'ct_flush' can be used to restore the previous behavior. Disabled by default.\n    - Always allow IPv6 Router Discovery, Neighbor Discovery, and Multicast Listener Discovery protocols, regardless of\n      ACLs defined.\n    - Send ICMP Fragmentation Needed packets back to offending ports when communicating with multichassis ports using\n      frames that don't fit through a tunnel. This is done only for logical switches that are attached to a physical\n      network via a localnet port, in which case multichassis ports may have an effective MTU different from regular\n      ports and hence may need this mechanism to maintain connectivity with other peers in the network.\n    - ECMP routes use L4_SYM dp-hash by default if the datapath supports it. Existing sessions might get re-hashed to a\n      different ECMP path when OVN detects the algorithm support in the datapath during an upgrade or restart of\n      ovn-controller.\n","status":"published","published":"2026-01-09T10:54:58Z","modified":"2026-03-23T04:52:31.998653Z","updated_at":"2026-11-02T15:54:01.610851Z"},{"id":"SUSE-SU-2026:20061-1","title":"Security update for openvswitch","description":"This update for openvswitch fixes the following issues:\n\nUpdate OpenvSwitch to v3.1.7 and OVN to v23.03.3:\n\nSecurity issues fixed:\n\n- CVE-2023-3966: ovs: invalid memory access and potential denial of service via specially crafted Geneve packets\n  (bsc#1219465).\n- CVE-2023-5366: ovs: OpenFlow rules may be bypassed via specially crafted ICMPv6 Neighbor Advertisement packets sent\n  between virtual machines t(bsc#1216002).\n- CVE-2024-2182: ovn: denial of service via injection of specially crafted BFD packets from inside unprivileged\n  workloads (bsc#1255435).\n- CVE-2025-0650: ovn: egress ACLs may be bypassed via specially crafted UDP packet (bsc#1236353).\n\nOther updates and bugfixes:\n\n- OpenvSwitch upstream bugfix updates:\n  * https://www.openvswitch.org/releases/NEWS-3.1.7.txt\n  * v3.1.7\n    - Bug fixes\n    - OVS validated with DPDK 22.11.7.\n  * v3.1.6\n    - Bug fixes\n    - OVS validated with DPDK 22.11.6.\n  * v3.1.5\n    - Bug fixes\n    - OVS validated with DPDK 22.11.5.\n  * v3.1.4\n    - Bug fixes\n    - OVS validated with DPDK 22.11.4.\n  \n- OVN upstream bugfix updates:\n  * https://github.com/ovn-org/ovn/blob/branch-23.03/NEWS\n  * v23.03.3\n    - Bug fixes\n    - Add \"garp-max-timeout-sec\" config option to vswitchd external-ids to cap the time between when ovn-controller\n      sends gARP packets.\n  * v23.03.1\n    - Bug fixes\n    - CT entries are not flushed by default anymore whenever a load balancer backend is removed.  A new, per-LB, option\n      'ct_flush' can be used to restore the previous behavior. Disabled by default.\n    - Always allow IPv6 Router Discovery, Neighbor Discovery, and Multicast Listener Discovery protocols, regardless of\n      ACLs defined.\n    - Send ICMP Fragmentation Needed packets back to offending ports when communicating with multichassis ports using\n      frames that don't fit through a tunnel. This is done only for logical switches that are attached to a physical\n      network via a localnet port, in which case multichassis ports may have an effective MTU different from regular\n      ports and hence may need this mechanism to maintain connectivity with other peers in the network.\n    - ECMP routes use L4_SYM dp-hash by default if the datapath supports it. Existing sessions might get re-hashed to a\n      different ECMP path when OVN detects the algorithm support in the datapath during an upgrade or restart of\n      ovn-controller.\n","status":"published","published":"2026-01-08T14:43:50Z","modified":"2026-03-23T04:52:32.866694Z","updated_at":"2026-11-02T15:54:01.610851Z"},{"id":"USN-6691-1","title":"ovn vulnerability","description":"It was discovered that OVN incorrectly enabled OVS Bidirectional Forwarding\nDetection on logical ports. A remote attacker could possibly use this issue\nto disrupt traffic.\n","status":"published","published":"2024-03-12T14:18:08Z","modified":"2026-02-10T04:43:37Z","updated_at":"2026-11-02T16:58:17.914523Z"}]}}