{"id":"CVE-2017-16227","details":"The aspath_put function in bgpd/bgp_aspath.c in Quagga before 1.2.2 allows remote attackers to cause a denial of service (session drop) via BGP UPDATE messages, because AS_PATH size calculation for long paths counts certain bytes twice and consequently constructs an invalid message.","modified":"2026-04-16T04:32:58.810616744Z","published":"2017-10-29T20:29:00.207Z","related":["SUSE-SU-2018:0455-1","SUSE-SU-2018:0456-1","SUSE-SU-2018:0457-1","openSUSE-SU-2024:11290-1"],"references":[{"type":"REPORT","url":"http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txt"},{"type":"REPORT","url":"http://www.debian.org/security/2017/dsa-4011"},{"type":"FIX","url":"https://bugs.debian.org/879474"},{"type":"FIX","url":"https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008"},{"type":"FIX","url":"https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-16227.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"1.2.1"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}]}}],"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"}]}