{"id":"UBUNTU-CVE-2017-8921","details":"In FlightGear before 2017.2.1, the FGCommand interface allows overwriting any file the user has write access to, but not with arbitrary data: only with the contents of a FlightGear flightplan (XML). A resource such as a malicious third-party aircraft could exploit this to damage files belonging to the user. Both this issue and CVE-2016-9956 are directory traversal vulnerabilities in Autopilot/route_mgr.cxx - this one exists because of an incomplete fix for CVE-2016-9956.","modified":"2025-10-24T04:46:19Z","published":"2017-05-12T19:29:00Z","upstream":["CVE-2017-8921"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-8921"},{"type":"REPORT","url":"https://sourceforge.net/p/flightgear/flightgear/ci/faf872e7f71ca14c567ac7080561fc785d8d2fd0/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-8921"}],"affected":[{"package":{"name":"flightgear","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/flightgear@3.4.0-3ubuntu1.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.0-1build1","3.4.0-2","3.4.0-3","3.4.0-3ubuntu1","3.4.0-3ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"flightgear","binary_version":"3.4.0-3ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-8921.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}