{"id":"UBUNTU-CVE-2023-46849","details":"Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.","modified":"2026-01-30T02:10:30.520801Z","published":"2023-11-15T00:00:00Z","withdrawn":"2025-07-18T16:54:40Z","related":["USN-6484-1"],"upstream":["CVE-2023-46849"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-46849"},{"type":"REPORT","url":"https://community.openvpn.net/openvpn/wiki/CVE-2023-46849"},{"type":"REPORT","url":"https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6484-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-46849"}],"affected":[{"package":{"name":"openvpn","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/openvpn@2.4.7-1ubuntu2.20.04.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-1ubuntu2.20.04.4"}]}],"versions":["2.4.7-1ubuntu2","2.4.7-1ubuntu2.20.04.2","2.4.7-1ubuntu2.20.04.3"],"ecosystem_specific":{"binaries":[{"binary_name":"openvpn","binary_version":"2.4.7-1ubuntu2.20.04.4"},{"binary_name":"openvpn-dbgsym","binary_version":"2.4.7-1ubuntu2.20.04.4"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46849.json"}},{"package":{"name":"openvpn","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/openvpn@2.5.5-1ubuntu3.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.5-1ubuntu3.1"}]}],"versions":["2.5.1-3ubuntu1","2.5.1-3ubuntu2","2.5.1-3ubuntu4","2.5.1-3ubuntu5","2.5.5-1ubuntu1","2.5.5-1ubuntu3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"openvpn","binary_version":"2.5.5-1ubuntu3.1"},{"binary_name":"openvpn-dbgsym","binary_version":"2.5.5-1ubuntu3.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46849.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}