{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2018-17205","title":"Title"},{"category":"description","text":"An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting ofproto_rule_insert__ in ofproto/ofproto.c. During bundle commit, flows that are added in a bundle are applied to ofproto in order. If a flow cannot be added (e.g., the flow action is a go-to for a group id that does not exist), OvS tries to revert back all previous flows that were successfully applied from the same bundle. This is possible since OvS maintains list of old flows that were replaced by flows from the bundle. While reinserting old flows, OvS has an assertion failure due to a check on rule state != RULE_INITIALIZED. This would work for new flows, but for an old flow the rule state is RULE_REMOVED. The assertion failure causes an OvS crash.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2018-17205","url":"https://www.suse.com/security/cve/CVE-2018-17205"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1104467 for CVE-2018-17205","url":"https://bugzilla.suse.com/1104467"},{"category":"external","summary":"Advisory link for SUSE-SU-2018:4128-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2018-December/004965.html"},{"category":"external","summary":"Advisory link for openSUSE-SU-2018:4148-1","url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/RWWVMXVHK4TM7P3FSDLTKB3QSJBMQARY/#RWWVMXVHK4TM7P3FSDLTKB3QSJBMQARY"}],"title":"SUSE CVE CVE-2018-17205","tracking":{"current_release_date":"2025-10-07T09:48:38Z","generator":{"date":"2023-02-15T04:23:37Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2018-17205","initial_release_date":"2023-02-15T04:23:37Z","revision_history":[{"date":"2023-02-15T04:23:37Z","number":"2","summary":"Current version"},{"date":"2023-12-08T04:09:14Z","number":"3","summary":"Current version"},{"date":"2023-12-09T02:54:29Z","number":"4","summary":"Current version"},{"date":"2025-01-01T07:24:12Z","number":"5","summary":"Current version"},{"date":"2025-02-18T06:57:26Z","number":"6","summary":"Current version"},{"date":"2025-03-14T03:51:28Z","number":"7","summary":"Current version"},{"date":"2025-03-15T11:54:19Z","number":"8","summary":"Current version"},{"date":"2025-04-25T06:49:47Z","number":"9","summary":"Current version"},{"date":"2025-10-07T09:48:38Z","number":"10","summary":"Current version"}],"status":"interim","version":"10"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"SUSE Linux Enterprise High Performance Computing 15","product":{"name":"SUSE Linux Enterprise High Performance Computing 15","product_id":"SUSE Linux Enterprise High Performance Computing 15","product_identification_helper":{"cpe":"cpe:/o:suse:sle_hpc:15"}}},{"category":"product_name","name":"SUSE Linux Enterprise Module for Server Applications 15","product":{"name":"SUSE Linux Enterprise Module for Server Applications 15","product_id":"SUSE Linux Enterprise Module for Server Applications 15","product_identification_helper":{"cpe":"cpe:/o:suse:sle-module-server-applications:15"}}},{"category":"product_name","name":"SUSE Linux Enterprise Server 12 SP3","product":{"name":"SUSE Linux Enterprise Server 12 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Page","text":"https://www.suse.com/security/cve/CVE-2018-17205"}],"notes":[{"category":"general","text":"An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting ofproto_rule_insert__ in ofproto/ofproto.c. During bundle commit, flows that are added in a bundle are applied to ofproto in order. If a flow cannot be added (e.g., the flow action is a go-to for a group id that does not exist), OvS tries to revert back all previous flows that were successfully applied from the same bundle. This is possible since OvS maintains list of old flows that were replaced by flows from the bundle. While reinserting old flows, OvS has an assertion failure due to a check on rule state != RULE_INITIALIZED. This would work for new flows, but for an old flow the rule state is RULE_REMOVED. The assertion failure causes an OvS crash.","title":"CVE description"}],"product_status":{"known_not_affected":["SUSE Linux Enterprise High Performance Computing 15:libopenvswitch-2_11-0","SUSE Linux Enterprise High Performance Computing 15:libopenvswitch-2_8-0","SUSE Linux Enterprise High Performance Computing 15:openvswitch","SUSE Linux Enterprise High Performance Computing 15:openvswitch-devel","SUSE Linux Enterprise Module for Server Applications 15:libopenvswitch-2_11-0","SUSE Linux Enterprise Module for Server Applications 15:libopenvswitch-2_8-0","SUSE Linux Enterprise Module for Server Applications 15:openvswitch","SUSE Linux Enterprise Module for Server Applications 15:openvswitch-devel","SUSE Linux Enterprise Server 15:libopenvswitch-2_11-0","SUSE Linux Enterprise Server 15:libopenvswitch-2_8-0","SUSE Linux Enterprise Server 15:openvswitch","SUSE Linux Enterprise Server 15:openvswitch-devel","SUSE Linux Enterprise Server for SAP Applications 15:libopenvswitch-2_11-0","SUSE Linux Enterprise Server for SAP Applications 15:libopenvswitch-2_8-0","SUSE Linux Enterprise Server for SAP Applications 15:openvswitch","SUSE Linux Enterprise Server for SAP Applications 15:openvswitch-devel"],"recommended":["SUSE Linux Enterprise Server 12 SP3-TERADATA:openvswitch-2.7.6-3.23.1","SUSE Linux Enterprise Server 12 SP3:openvswitch-2.7.6-3.23.1","SUSE Linux Enterprise Server for SAP Applications 12 SP3:openvswitch-2.7.6-3.23.1"]},"references":[{"category":"external","summary":"CVE-2018-17205","url":"https://www.suse.com/security/cve/CVE-2018-17205"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1104467 for CVE-2018-17205","url":"https://bugzilla.suse.com/1104467"},{"category":"external","summary":"Advisory link for SUSE-SU-2018:4128-1","url":"https://lists.suse.com/pipermail/sle-security-updates/2018-December/004965.html"},{"category":"external","summary":"Advisory link for openSUSE-SU-2018:4148-1","url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/RWWVMXVHK4TM7P3FSDLTKB3QSJBMQARY/#RWWVMXVHK4TM7P3FSDLTKB3QSJBMQARY"}],"remediations":[{"category":"vendor_fix","details":"To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n","product_ids":["SUSE Linux Enterprise Server 12 SP3-TERADATA:openvswitch-2.7.6-3.23.1","SUSE Linux Enterprise Server 12 SP3:openvswitch-2.7.6-3.23.1","SUSE Linux Enterprise Server for SAP Applications 12 SP3:openvswitch-2.7.6-3.23.1"]}],"scores":[{"cvss_v3":{"baseScore":6.5,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"products":["SUSE Linux Enterprise Server 12 SP3-TERADATA:openvswitch-2.7.6-3.23.1","SUSE Linux Enterprise Server 12 SP3:openvswitch-2.7.6-3.23.1","SUSE Linux Enterprise Server for SAP Applications 12 SP3:openvswitch-2.7.6-3.23.1"]}],"threats":[{"category":"impact","date":"2018-08-28T13:16:04Z","details":"moderate"}],"title":"CVE-2018-17205"}]}