{"id":"UBUNTU-CVE-2020-14399","details":"An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly \"no trust boundary crossed.","modified":"2026-02-04T02:21:24.684Z","published":"2020-06-17T16:15:00Z","related":["USN-4434-1"],"upstream":["CVE-2020-14399"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-14399"},{"type":"REPORT","url":"https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4434-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-14399"}],"affected":[{"package":{"name":"libvncserver","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libvncserver@0.9.10+dfsg-3ubuntu0.16.04.5?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.10+dfsg-3ubuntu0.16.04.5"}]}],"versions":["0.9.10+dfsg-3","0.9.10+dfsg-3build1","0.9.10+dfsg-3ubuntu0.16.04.1","0.9.10+dfsg-3ubuntu0.16.04.2","0.9.10+dfsg-3ubuntu0.16.04.3","0.9.10+dfsg-3ubuntu0.16.04.4"],"ecosystem_specific":{"binaries":[{"binary_name":"libvncclient1","binary_version":"0.9.10+dfsg-3ubuntu0.16.04.5"},{"binary_name":"libvncserver-config","binary_version":"0.9.10+dfsg-3ubuntu0.16.04.5"},{"binary_name":"libvncserver-dev","binary_version":"0.9.10+dfsg-3ubuntu0.16.04.5"},{"binary_name":"libvncserver1","binary_version":"0.9.10+dfsg-3ubuntu0.16.04.5"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14399.json"}},{"package":{"name":"libvncserver","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libvncserver@0.9.11+dfsg-1ubuntu1.3?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.11+dfsg-1ubuntu1.3"}]}],"versions":["0.9.11+dfsg-1","0.9.11+dfsg-1ubuntu1","0.9.11+dfsg-1ubuntu1.1","0.9.11+dfsg-1ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libvncclient1","binary_version":"0.9.11+dfsg-1ubuntu1.3"},{"binary_name":"libvncserver-config","binary_version":"0.9.11+dfsg-1ubuntu1.3"},{"binary_name":"libvncserver-dev","binary_version":"0.9.11+dfsg-1ubuntu1.3"},{"binary_name":"libvncserver1","binary_version":"0.9.11+dfsg-1ubuntu1.3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14399.json"}},{"package":{"name":"libvncserver","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libvncserver@0.9.12+dfsg-9ubuntu0.2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.12+dfsg-9ubuntu0.2"}]}],"versions":["0.9.11+dfsg-1.3","0.9.12+dfsg-3ubuntu3","0.9.12+dfsg-6","0.9.12+dfsg-7","0.9.12+dfsg-8","0.9.12+dfsg-9","0.9.12+dfsg-9ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libvncclient1","binary_version":"0.9.12+dfsg-9ubuntu0.2"},{"binary_name":"libvncserver-dev","binary_version":"0.9.12+dfsg-9ubuntu0.2"},{"binary_name":"libvncserver1","binary_version":"0.9.12+dfsg-9ubuntu0.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14399.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":"Ubuntu","score":"medium"}]}