{"id":"UBUNTU-CVE-2019-20788","details":"libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.","modified":"2026-04-22T13:44:01.818701Z","published":"2020-04-23T19:15:00Z","related":["USN-4407-1"],"upstream":["CVE-2019-20788"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-20788"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4407-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-20788"}],"affected":[{"package":{"name":"x11vnc","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/x11vnc@0.9.13-1.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.13-1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"x11vnc","binary_version":"0.9.13-1.1"},{"binary_name":"x11vnc-data","binary_version":"0.9.13-1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20788.json"}},{"package":{"name":"libvncserver","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libvncserver@0.9.10+dfsg-3ubuntu0.16.04.4?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.10+dfsg-3ubuntu0.16.04.4"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libvncclient1","binary_version":"0.9.10+dfsg-3ubuntu0.16.04.4"},{"binary_version":"0.9.10+dfsg-3ubuntu0.16.04.4","binary_name":"libvncserver-config"},{"binary_name":"libvncserver1","binary_version":"0.9.10+dfsg-3ubuntu0.16.04.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20788.json"}},{"package":{"name":"libvncserver","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libvncserver@0.9.11+dfsg-1ubuntu1.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.11+dfsg-1ubuntu1.2"}]}],"versions":["0.9.11+dfsg-1","0.9.11+dfsg-1ubuntu1","0.9.11+dfsg-1ubuntu1.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"0.9.11+dfsg-1ubuntu1.2","binary_name":"libvncclient1"},{"binary_name":"libvncserver-config","binary_version":"0.9.11+dfsg-1ubuntu1.2"},{"binary_version":"0.9.11+dfsg-1ubuntu1.2","binary_name":"libvncserver1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20788.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}