CVE-2017-8921 Path traversal in n/a
A malicious aircraft resource can overwrite user files via path traversal in the FlightGear simulator, requiring an upgrade to fix.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-8921?
CVE-2017-8921 is a high-severity path traversal vulnerability in n/a, published on 12 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2017-8921?
It affects 1 product.
Products include Flightgear Flightgear.
How do I fix CVE-2017-8921?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2017-8921 being exploited?
There is no known exploitation of CVE-2017-8921 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2017-8921, GHSA-cm86-qqq5-r5v2, UBUNTU-CVE-2017-8921.