{"id":"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":"2026-08-18T13:28:51.331057Z","published":"2020-06-17T16:15:11.930Z","related":["SUSE-SU-2020:14424-1","SUSE-SU-2020:1922-1","SUSE-SU-2020:2167-1","openSUSE-SU-2020:0988-1","openSUSE-SU-2020:1025-1","openSUSE-SU-2020:1056-1","openSUSE-SU-2024:10598-1"],"database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*"],"extracted_events":[{"introduced":"16.04"},{"last_affected":"16.04"},{"introduced":"18.04"},{"last_affected":"18.04"},{"introduced":"20.04"},{"last_affected":"20.04"}],"source":"CPE_STRING","vendor_product":"canonical:ubuntu_linux"},{"extracted_events":[{"introduced":"8.0"},{"last_affected":"8.0"},{"introduced":"9.0"},{"last_affected":"9.0"}],"source":"CPE_STRING","vendor_product":"debian:debian_linux","cpes":["cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"]},{"vendor_product":"opensuse:leap","cpes":["cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*","cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"15.1"},{"last_affected":"15.1"},{"introduced":"15.2"},{"last_affected":"15.2"}],"source":"CPE_STRING"}]},"references":[{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html"},{"type":"ADVISORY","url":"https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4434-1/"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1860354"},{"type":"FIX","url":"https://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libvnc/libvncserver","events":[{"introduced":"0"},{"fixed":"2aa20dad4c23c18948d3f63b33f9dfec1f837729"},{"fixed":"23e5cbe6b090d7f22982aee909a6a618174d3c2d"}],"database_specific":{"cpe":"cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"0.9.13"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["LibVNCServer-0.9.12","LibVNCServer-0.9.11","LibVNCServer-0.9.10","LibVNCServer-0.9.9","LibVNCServer-0.9.8","X11VNC_0_9_12","X11VNC_0_9_11","X11VNC_0_9_10","X11VNC_0_9_9","X11VNC_0_9_8","X11VNC_0_9_7","X11VNC_REL_0_9_6","X11VNC_REL_0_9_5","X11VNC_REL_0_9_4"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-14399.json","vanir_signatures_modified":"2026-08-18T13:28:51Z","vanir_signatures":[{"target":{"function":"SetFormatAndEncodings","file":"libvncclient/rfbproto.c"},"deprecated":false,"digest":{"function_hash":"292719199051264423232023195326445512722","length":6767},"id":"CVE-2020-14399-2ff28e15","signature_type":"Function","signature_version":"v1","source":"https://github.com/libvnc/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d"},{"source":"https://github.com/libvnc/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d","target":{"file":"libvncclient/rfbproto.c"},"deprecated":false,"digest":{"line_hashes":["289411994645727400457192257966915221379","208837877831103949359398245394014295558","332985853190493794914941061839301886752","88759214378154492617504044073384416189","101271520213990510100092381220390867601","55113811666554751528682358494177991134","181492142388692610613554751535531639094","218617286323755537607650297728216934745","29442809713893014097360319726760739566","285295838407132926322499123666082004538"],"threshold":0.9},"id":"CVE-2020-14399-4d282684","signature_type":"Line","signature_version":"v1"}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}