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CVE-2020-15264— Privilege Escalation in Boxstarter

Quick assessment

Affected
chocolatey boxstarter
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Chocolatey Boxstarter是美国chocolatey（Chocolatey）公司的一款适用于安装虚拟Windows环境的虚拟机管理软件。 Boxstarter installer 2.13.0之前版本存在安全漏洞，该漏洞源于将C:ProgramDataBoxstarter配置为在系统范围的PATH环境变量中。但是，该目录可由普通的、无特权的用户写入。要利用此漏洞，请将一个DLL放在特权服务正在查找的目录中。当Windows启动时，它将使用系统特权执行DllMain()中的代码。攻击者可利用

CVSS 8.0 · High EPSS 1.55% · P74
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I. Basic Information for CVE-2020-15264

Vulnerability Information
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Vulnerability Title
Privilege Escalation in Boxstarter
Source: CVE Program / CVE List V5
Vulnerability Description
The Boxstarter installer before version 2.13.0 configures C:\ProgramData\Boxstarter to be in the system-wide PATH environment variable. However, this directory is writable by normal, unprivileged users. To exploit the vulnerability, place a DLL in this directory that a privileged service is looking for. For example, WptsExtensions.dll When Windows starts, it'll execute the code in DllMain() with SYSTEM privileges. Any unprivileged user can execute code with SYSTEM privileges. The issue is fixed in version 3.13.0
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
将资源暴露给错误范围
Source: CVE Program / CVE List V5
Vulnerability Title
Chocolatey Boxstarter 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chocolatey Boxstarter是美国chocolatey（Chocolatey）公司的一款适用于安装虚拟Windows环境的虚拟机管理软件。 Boxstarter installer 2.13.0之前版本存在安全漏洞，该漏洞源于将C:ProgramDataBoxstarter配置为在系统范围的PATH环境变量中。但是，该目录可由普通的、无特权的用户写入。要利用此漏洞，请将一个DLL放在特权服务正在查找的目录中。当Windows启动时，它将使用系统特权执行DllMain()中的代码。攻击者可利用
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

Vendor Product Affected Versions CPE Subscribe
chocolatey boxstarter < 2.13.0 -

II. Public POCs for CVE-2020-15264

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III. Intelligence Information for CVE-2020-15264

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Patches & Fixes for CVE-2020-15264 (1)

Vendor Advisories for CVE-2020-15264 (2)

IV. Related Vulnerabilities

Same weakness: CWE-668

V. Comments for CVE-2020-15264

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