{"id":"CVE-2018-5381","details":"The Quagga BGP daemon (bgpd) prior to version 1.2.3 has a bug in its parsing of \"Capabilities\" in BGP OPEN messages, in the bgp_packet.c:bgp_capability_msg_parse function. The parser can enter an infinite loop on invalid capabilities if a Multi-Protocol capability does not have a recognized AFI/SAFI, causing a denial of service.","modified":"2026-04-16T06:16:06.569002900Z","published":"2018-02-19T13:29:00.583Z","related":["SUSE-SU-2018:0455-1","SUSE-SU-2018:0456-1","SUSE-SU-2018:0457-1","SUSE-SU-2024:3426-1","openSUSE-SU-2024:11290-1"],"references":[{"type":"ADVISORY","url":"https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txt"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/02/msg00021.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201804-17"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3573-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4115"},{"type":"ADVISORY","url":"http://savannah.nongnu.org/forum/forum.php?forum_id=9095"},{"type":"ADVISORY","url":"http://www.kb.cert.org/vuls/id/940439"},{"type":"ADVISORY","url":"https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdf"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-5381.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"1.2.2"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"17.10"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"fixed":"2.13.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}