{"id":"CVE-2019-11779","details":"In Eclipse Mosquitto 1.5.0 to 1.6.5 inclusive, if a malicious MQTT client sends a SUBSCRIBE packet containing a topic that consists of approximately 65400 or more '/' characters, i.e. the topic hierarchy separator, then a stack overflow will occur.","modified":"2026-08-27T03:48:16.663286788Z","published":"2019-09-19T14:15:10.573Z","related":["openSUSE-SU-2019:2206-1","openSUSE-SU-2019:2247-1","openSUSE-SU-2024:11057-1"],"database_specific":{"unresolved_ranges":[{"vendor_product":"canonical:ubuntu_linux","cpes":["cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"19.04"},{"last_affected":"19.04"}],"source":"CPE_STRING"},{"source":"CPE_STRING","vendor_product":"debian:debian_linux","cpes":["cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.0"},{"last_affected":"8.0"},{"introduced":"10.0"},{"last_affected":"10.0"}]},{"source":"CPE_STRING","vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"29"},{"last_affected":"29"},{"introduced":"30"},{"last_affected":"30"},{"introduced":"31"},{"last_affected":"31"}]},{"vendor_product":"opensuse:backports_sle","cpes":["cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*"],"extracted_events":[{"introduced":"15.0-sp1"},{"last_affected":"15.0-sp1"}],"source":"CPE_STRING"},{"cpes":["cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"15.1"},{"last_affected":"15.1"}],"source":"CPE_STRING","vendor_product":"opensuse:leap"}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D4WMHIM64Q35NGTR6R3ILZUL4MA4ANB5/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HFWQBNFTAVHPUYNGYO2TCPF5PCSWC2Z7/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWNVTFA2CKXERXRYPYE2YFTZP4GNBGYY/"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00077.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00008.html"},{"type":"ADVISORY","url":"https://bugs.eclipse.org/bugs/show_bug.cgi?id=551160"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00035.html"},{"type":"ADVISORY","url":"https://seclists.org/bugtraq/2019/Nov/25"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4137-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2019/dsa-4570"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/eclipse-mosquitto/mosquitto","events":[{"introduced":"5e60136449d678948520085985d7e7f91f9e601c"},{"fixed":"f47b56583149850f69c684130170753944ea9c93"},{"introduced":"4555ee79e513d9a6dc5c13d527c56cb2cfdd24d0"},{"fixed":"8c9e448d5c8c79e6c8b49655c7dd4a64e5b3ca54"}],"database_specific":{"cpe":"cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"1.5"},{"fixed":"1.5.9"},{"introduced":"1.6"},{"fixed":"1.6.6"}],"source":"CPE_RANGE"}}],"versions":["v1.5.8","v1.6.5","v1.6.4","v1.6.3","v1.6.2","v1.6.1","v1.6","v1.5.7","v1.5.5","v1.5.4","v1.5.3","v1.5.2","v1.5.1","v1.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-11779.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}