CVE-2020-21055 Path traversal in n/a
Malicious users can rename arbitrary system files via directory traversal in FusionPBX file rename functionality.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-21055?
CVE-2020-21055 is a medium-severity path traversal vulnerability in Fusionpbx Fusionpbx, published on 20 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A Directory Traversal vulnerability exists in FusionPBX 4.5.7 allows malicoius users to rename any file of the system.via the (1) folder, (2) filename, and (3) newfilename variables in app\edit\filerename.php.
Weakness: CWE-22
Which versions are affected by CVE-2020-21055?
It affects 1 product.
Products include Fusionpbx Fusionpbx.
How do I fix CVE-2020-21055?
No fix has been published for CVE-2020-21055 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-2020-21055 being exploited?
There is no known exploitation of CVE-2020-21055 in the wild and no public exploit code.
Other vulnerabilities in Fusionpbx Fusionpbx
Sources
Also known as GHSA-r3xv-f88g-47pw.