{"id":"UBUNTU-CVE-2018-16758","details":"Missing message authentication in the meta-protocol in Tinc VPN version 1.0.34 and earlier allows a man-in-the-middle attack to disable the encryption of VPN packets.","modified":"2025-10-24T04:47:12Z","published":"2018-10-10T21:29:00Z","upstream":["CVE-2018-16758"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-16758"},{"type":"REPORT","url":"http://www.tinc-vpn.org/git/browse?p=tinc;a=commit;h=e97943b7cc9c851ae36f5a41e2b6102faa74193f"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-16758"}],"affected":[{"package":{"name":"tinc","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/tinc@1.0.26-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.26-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.26-1","binary_name":"tinc"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-16758.json"}},{"package":{"name":"tinc","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/tinc@1.0.33-1build1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.31-1","1.0.32-1","1.0.33-1","1.0.33-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.33-1build1","binary_name":"tinc"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-16758.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}