CVE-2017-8921

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.

• CWE-22

• https://sourceforge.net/p/flightgear/flightgear/ci/faf872e7f71ca14c567ac7080561fc785d8d2fd0/Issue Tracking, Patch, Third Party Advisory
• https://sourceforge.net/p/flightgear/flightgear/ci/faf872e7f71ca14c567ac7080561fc785d8d2fd0/Issue Tracking, Patch, Third Party Advisory

Published

May 12, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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