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I. Basic Information for CVE-2019-16784
Vulnerability Information

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Vulnerability Title
Local Privilege Escalation present only on the Windows version of PyInstaller
Source: NVD (National Vulnerability Database)
Vulnerability Description
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).
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
带着不必要的权限执行
Source: NVD (National Vulnerability Database)
Vulnerability Title
PyInstaller 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PyInstaller是Python基金会的一个Python库,它会分析您的代码以发现您的脚本需要执行的所有其他模块和库。 PyInstaller 3.6之前版本(Windows)中存在安全漏洞。本地攻击者可通过发送特制的请求利用该漏洞提升权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
PyInstallerPyInstaller < 3.6 -
II. Public POCs for CVE-2019-16784
#POC DescriptionSource LinkShenlong Link
1Exploit for PyInstaller CVE-2019-16784https://github.com/AlterSolutions/PyInstallerPrivEscPOC Details
2A Proof of Concept exploit for the PyInstaller CVE-2019-16783https://github.com/Ckrielle/CVE-2019-16784-POCPOC Details
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III. Intelligence Information for CVE-2019-16784
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IV. Related Vulnerabilities
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