CVE-2019-16784: Improper Privilege Management
(updated )
In PyInstaller before version, only on Windows, a local privilege escalation vulnerability is present in this particular case. A software using PyInstaller in onefile
mode can be launched by a privileged user (at least more than the current one) so that TempPath
may become a world writable directory. This is the case for example if the software is launched as a service or as a scheduled task using a system account. In order to be exploitable the software has to be (re)started after the attacker launch the exploit program, so for a service launched at startup, a service restart is needed (e.g. after a crash or an upgrade).
References
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