{"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-2023-43796","title":"Title"},{"category":"description","text":"Synapse is an open-source Matrix homeserver Prior to versions 1.95.1 and 1.96.0rc1, cached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver. System administrators are encouraged to upgrade to Synapse 1.95.1 or 1.96.0rc1 to receive a patch. As a workaround, the `federation_domain_whitelist` can be used to limit federation traffic with a homeserver.","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-2023-43796","url":"https://www.suse.com/security/cve/CVE-2023-43796"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1216770 for CVE-2023-43796","url":"https://bugzilla.suse.com/1216770"}],"title":"SUSE CVE CVE-2023-43796","tracking":{"current_release_date":"2025-07-07T23:50:19Z","generator":{"date":"2023-11-02T02:44:02Z","engine":{"name":"cve-database.git:bin/generate-csaf-vex.pl","version":"1"}},"id":"CVE-2023-43796","initial_release_date":"2023-11-02T02:44:02Z","revision_history":[{"date":"2023-11-02T02:44:02Z","number":"2","summary":"Current version"},{"date":"2025-01-01T01:53:57Z","number":"3","summary":"Current version"},{"date":"2025-02-14T06:13:00Z","number":"4","summary":"Current version"},{"date":"2025-02-16T06:06:06Z","number":"5","summary":"Current version"},{"date":"2025-03-15T06:08:49Z","number":"6","summary":"Current version"},{"date":"2025-07-07T23:50:19Z","number":"7","summary":"Current version"}],"status":"interim","version":"7"}},"product_tree":{"branches":[{"branches":[{"branches":[{"category":"product_name","name":"openSUSE Tumbleweed","product":{"name":"openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed","product_identification_helper":{"cpe":"cpe:/o:opensuse:tumbleweed"}}},{"category":"product_version","name":"matrix-synapse-1.95.1-1.1","product":{"name":"matrix-synapse-1.95.1-1.1","product_id":"matrix-synapse-1.95.1-1.1","product_identification_helper":{"cpe":"cpe:2.3:a:matrix:synapse:1.95.1:*:*:*:*:*:*:*","purl":"pkg:rpm/suse/matrix-synapse@1.95.1-1.1"}}}],"category":"product_family","name":"SUSE Linux Enterprise"}],"category":"vendor","name":"SUSE"}],"relationships":[{"category":"default_component_of","full_product_name":{"name":"matrix-synapse-1.95.1-1.1 as component of openSUSE Tumbleweed","product_id":"openSUSE Tumbleweed:matrix-synapse-1.95.1-1.1"},"product_reference":"matrix-synapse-1.95.1-1.1","relates_to_product_reference":"openSUSE Tumbleweed"}]},"vulnerabilities":[{"cve":"CVE-2023-43796","ids":[{"system_name":"SUSE CVE Page","text":"https://www.suse.com/security/cve/CVE-2023-43796"}],"notes":[{"category":"general","text":"Synapse is an open-source Matrix homeserver Prior to versions 1.95.1 and 1.96.0rc1, cached device information of remote users can be queried from Synapse. This can be used to enumerate the remote users known to a homeserver. System administrators are encouraged to upgrade to Synapse 1.95.1 or 1.96.0rc1 to receive a patch. As a workaround, the `federation_domain_whitelist` can be used to limit federation traffic with a homeserver.","title":"CVE description"}],"product_status":{"recommended":["openSUSE Tumbleweed:matrix-synapse-1.95.1-1.1"]},"references":[{"category":"external","summary":"CVE-2023-43796","url":"https://www.suse.com/security/cve/CVE-2023-43796"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1216770 for CVE-2023-43796","url":"https://bugzilla.suse.com/1216770"}],"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":["openSUSE Tumbleweed:matrix-synapse-1.95.1-1.1"]}],"scores":[{"cvss_v3":{"baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"products":["openSUSE Tumbleweed:matrix-synapse-1.95.1-1.1"]}],"threats":[{"category":"impact","date":"2023-10-31T18:00:27Z","details":"moderate"}],"title":"CVE-2023-43796"}]}