CVE-2020-7867 Helpu arbitrary file creation vulnerability
A local attacker can create and execute arbitrary files in any directory with administrator privileges due to improper input validation in the Helpu viewer.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-7867?
CVE-2020-7867 is a high-severity path traversal vulnerability in HelpuViewer.exe, published on 27 Oct 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An improper input validation vulnerability in Helpu solution could allow a local attacker to arbitrary file creation and execution without click file transfer menu. It is possible to file in arbitrary directory for user because the viewer program receive the file from agent with privilege of administrator.
Weakness: CWE-20
Which versions are affected by CVE-2020-7867?
It affects 1 product.
Products include Helpu Helpuviewer.
How do I fix CVE-2020-7867?
No fix has been published for CVE-2020-7867 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-2020-7867 being exploited?
There is no known exploitation of CVE-2020-7867 in the wild and no public exploit code.
Sources
Also known as GHSA-c34g-9x5j-hq7p.