CVE-2017-8921

Name	CVE-2017-8921
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	862689

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
flightgear (PTS)	bullseye	1:2020.3.6+dfsg-1	fixed
	bookworm	1:2020.3.16+dfsg-1	fixed
	sid, trixie	1:2020.3.18+dfsg-1.1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
flightgear	source	jessie	3.0.0-5+deb8u2
flightgear	source	(unstable)	1:2016.4.4+dfsg-3			862689

Notes

Fixed by: https://sourceforge.net/p/flightgear/flightgear/ci/faf872e7f71ca14c567ac7080561fc785d8d2fd0/ (next)
Fixed by: https://sourceforge.net/p/flightgear/flightgear/ci/19ab09406e4249f2c6f8ac51938258d1c51eace0/ (2016.4)
Fixed by: https://sourceforge.net/p/flightgear/flightgear/ci/c8250b10bb9a116889f831d2299678b0ef70fec2/ (3.0.0)