CVE-2020-3979 Path traversal in VMware InstallBuilder
Attackers can execute arbitrary code by placing malicious libraries in a predictable, writable directory loaded by VMware InstallBuilder installers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-3979?
CVE-2020-3979 is a high-severity path traversal vulnerability in VMware InstallBuilder, published on 18 Sep 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
InstallBuilder for Qt Windows (versions prior to 20.7.0) installers look for plugins at a predictable location at initialization time, writable by non-admin users. While those plugins are not required, they are loaded if present, which could allow an attacker to plant a malicious library which could result in code execution with the security scope of the installer.
Weakness: CWE-427
Which versions are affected by CVE-2020-3979?
It affects 1 product.
Products include Installbuilder Installbuilder.
How do I fix CVE-2020-3979?
No fix has been published for CVE-2020-3979 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2020-3979 being exploited?
There is no known exploitation of CVE-2020-3979 in the wild and no public exploit code.
Other vulnerabilities in VMware InstallBuilder
Sources
Also known as GHSA-6495-758p-crj2.