{"id":"UBUNTU-CVE-2017-7522","details":"OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an embedded NULL character.","modified":"2025-07-16T08:13:26.670342Z","published":"2017-06-27T13:29:00Z","withdrawn":"2025-07-18T16:43:56Z","upstream":["CVE-2017-7522"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-7522"},{"type":"REPORT","url":"https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2017/06/21/6"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-7522"}],"affected":[{"package":{"name":"openvpn","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/openvpn@2.3.2-7ubuntu3.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.2-7ubuntu3.1"}]}],"versions":["2.3.2-4ubuntu1","2.3.2-5ubuntu1","2.3.2-7ubuntu1","2.3.2-7ubuntu2","2.3.2-7ubuntu3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"openvpn","binary_version":"2.3.2-7ubuntu3.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-7522.json"}},{"package":{"name":"openvpn","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/openvpn@2.3.10-1ubuntu2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.10-1ubuntu2"}]}],"versions":["2.3.7-1ubuntu1","2.3.7-2ubuntu1","2.3.8-1ubuntu1","2.3.10-1ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"openvpn","binary_version":"2.3.10-1ubuntu2"},{"binary_name":"openvpn-dbgsym","binary_version":"2.3.10-1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-7522.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}