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CVE-2020-15145— Local privilege elevation in Composer-Setup for Windows

Quick assessment

Affected
composer windows-setup
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.

Composer-Setup是Composer开源的一款应用程序。 基于Windows平台的Composer-Setup 6.0.0之前版本中存在安全漏洞。攻击者可利用该漏洞提升权限（如：执行权限较高的命令，获取本地系统权限等）。

CVSS 6.7 · Medium EPSS 0.41% · P33
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I. Basic Information for CVE-2020-15145

Vulnerability Information
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Vulnerability Title
Local privilege elevation in Composer-Setup for Windows
Source: CVE Program / CVE List V5
Vulnerability Description
In Composer-Setup for Windows before version 6.0.0, if the developer's computer is shared with other users, a local attacker may be able to exploit the following scenarios. 1. A local regular user may modify the existing `C:\ProgramData\ComposerSetup\bin\composer.bat` in order to get elevated command execution when composer is run by an administrator. 2. A local regular user may create a specially crafted dll in the `C:\ProgramData\ComposerSetup\bin` folder in order to get Local System privileges. See: https://itm4n.github.io/windows-server-netman-dll-hijacking. 3. If the directory of the php.exe selected by the user is not in the system path, it is added without checking that it is admin secured, as per Microsoft guidelines. See: https://msrc-blog.microsoft.com/2018/04/04/triaging-a-dll-planting-vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
缺省权限不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Composer-Setup 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Composer-Setup是Composer开源的一款应用程序。 基于Windows平台的Composer-Setup 6.0.0之前版本中存在安全漏洞。攻击者可利用该漏洞提升权限（如：执行权限较高的命令，获取本地系统权限等）。
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
composer windows-setup < 6.0.0 -

II. Public POCs for CVE-2020-15145

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III. Intelligence Information for CVE-2020-15145

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Patches & Fixes for CVE-2020-15145 (1)

Vendor Advisories for CVE-2020-15145 (1)

IV. Related Vulnerabilities

Same vendor: composer
Same weakness: CWE-276

V. Comments for CVE-2020-15145

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