{"id":"UBUNTU-CVE-2017-2670","details":"It was found in Undertow before 1.3.28 that with non-clean TCP close, the Websocket server gets into infinite loop on every IO thread, effectively causing DoS.","modified":"2026-04-02T18:08:29.145567Z","published":"2018-07-27T15:29:00Z","upstream":["CVE-2017-2670"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-2670"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-2670"}],"affected":[{"package":{"name":"undertow","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/undertow@1.3.16-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.4-1","1.3.5-1","1.3.7-1","1.3.11-1","1.3.16-1","1.3.16-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libundertow-java","binary_version":"1.3.16-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-2670.json"}},{"package":{"name":"undertow","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/undertow@2.3.8-2ubuntu0.1~esm1?arch=source&distro=esm-apps/noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.8-2","2.3.8-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libundertow-java","binary_version":"2.3.8-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-2670.json"}}],"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"},{"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"}]}