{"id":"UBUNTU-CVE-2018-20743","details":"murmur in Mumble through 1.2.19 before 2018-08-31 mishandles multiple concurrent requests that are persisted in the database, which allows remote attackers to cause a denial of service (daemon hang or crash) via a message flood.","modified":"2025-10-24T04:47:19Z","published":"2019-01-25T16:29:00Z","upstream":["CVE-2018-20743"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-20743"},{"type":"REPORT","url":"https://github.com/mumble-voip/mumble/issues/3505"},{"type":"REPORT","url":"https://github.com/mumble-voip/mumble/pull/3510"},{"type":"REPORT","url":"https://github.com/mumble-voip/mumble/pull/3512"},{"type":"REPORT","url":"https://bugs.debian.org/919249"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-20743"}],"affected":[{"package":{"name":"mumble","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/mumble@1.2.12-1ubuntu1+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.8-2ubuntu1","1.2.12-1ubuntu1","1.2.12-1ubuntu1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.12-1ubuntu1+esm1","binary_name":"mumble"},{"binary_version":"1.2.12-1ubuntu1+esm1","binary_name":"mumble-server"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20743.json"}},{"package":{"name":"mumble","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/mumble@1.2.19-1ubuntu1.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.18-1","1.2.19-1","1.2.19-1build1","1.2.19-1ubuntu1","1.2.19-1ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.19-1ubuntu1.1","binary_name":"mumble"},{"binary_version":"1.2.19-1ubuntu1.1","binary_name":"mumble-server"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20743.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}