CVE-2020-15145 Local privilege elevation in Composer-Setup for Windows
Local attackers can gain elevated privileges or execute code via DLL hijacking or file modification in the Composer Windows installer.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-15145?
CVE-2020-15145 is a medium-severity vulnerability in composer windows-setup, published on 14 Aug 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-276
Which versions are affected by CVE-2020-15145?
It affects 1 product.
Products include Getcomposer Composer-Setup.
How do I fix CVE-2020-15145?
No fix has been published for CVE-2020-15145 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-15145 being exploited?
There is no known exploitation of CVE-2020-15145 in the wild and no public exploit code.
Sources
Also known as GHSA-wgrx-r3qv-332c.