CVE-2020-11707 Path traversal in n/a
A low-privileged user can escape the sandbox and access restricted files by exploiting unenforced permissions on Windows Symlinks or Junctions in ProVide FTP server.
- 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-2020-11707?
CVE-2020-11707 is a high-severity path traversal vulnerability in n/a, published on 12 Apr 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in ProVide (formerly zFTPServer) through 13.1. It doesn't enforce permission over Windows Symlinks or Junctions. As a result, a low-privileged user (non-admin) can craft a Junction Link in a directory he has full control of, breaking out of the sandbox.
Weakness: CWE-863
Which versions are affected by CVE-2020-11707?
It affects 1 product.
Products include Provideserver Provide Ftp Server.
How do I fix CVE-2020-11707?
No fix has been published for CVE-2020-11707 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-2020-11707 being exploited?
There is no known exploitation of CVE-2020-11707 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-m375-vhrx-7rhv.