CVE-2020-15145 Information

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Reference

https://github.com/composer/windows-setup/commit/ca9f1435d368e3377e82d60ef0c7b795afa9f804 https://github.com/composer/windows-setup/security/advisories/GHSA-wgrx-r3qv-332c

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.2