Vulnerability Details CVE-2019-16784
In PyInstaller before version 3.6, only on Windows, a local privilege escalation vulnerability is present in this particular case: If a software using PyInstaller in "onefile" mode is launched by a privileged user (at least more than the current one) which have his "TempPath" resolving to 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 (TempPath will be C:\Windows\Temp). 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).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.032
EPSS Ranking 86.6%
CVSS Severity
CVSS v3 Score 7.0
CVSS v2 Score 4.4
References
Products affected by CVE-2019-16784
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cpe:2.3:a:pyinstaller:pyinstaller:1.0
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cpe:2.3:a:pyinstaller:pyinstaller:1.1
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cpe:2.3:a:pyinstaller:pyinstaller:1.2
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cpe:2.3:a:pyinstaller:pyinstaller:1.3
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cpe:2.3:a:pyinstaller:pyinstaller:1.4
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cpe:2.3:a:pyinstaller:pyinstaller:1.5
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cpe:2.3:a:pyinstaller:pyinstaller:1.5.1
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cpe:2.3:a:pyinstaller:pyinstaller:2.0
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cpe:2.3:a:pyinstaller:pyinstaller:2.1
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cpe:2.3:a:pyinstaller:pyinstaller:3.0
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cpe:2.3:a:pyinstaller:pyinstaller:3.1
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cpe:2.3:a:pyinstaller:pyinstaller:3.1.1
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cpe:2.3:a:pyinstaller:pyinstaller:3.2
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cpe:2.3:a:pyinstaller:pyinstaller:3.2.1
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cpe:2.3:a:pyinstaller:pyinstaller:3.3
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cpe:2.3:a:pyinstaller:pyinstaller:3.3.1
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cpe:2.3:a:pyinstaller:pyinstaller:3.4
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cpe:2.3:a:pyinstaller:pyinstaller:3.5
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cpe:2.3:o:microsoft:windows:-