CVE-2020-21554 Path traversal in n/a
Attackers can delete arbitrary files via the back_list parameter, potentially allowing CMS reinstallation and security bypass.
- 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-2020-21554?
CVE-2020-21554 is a high-severity path traversal vulnerability in n/a, published on 25 Mar 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A File Deletion vulnerability exists in TinyShop 3.1.1 in the back_list parameter in controllers\admin.php, which could let a malicious user delete any file such as install.lock to reinstall cms.
Which versions are affected by CVE-2020-21554?
It affects 1 product.
Products include Tinyrise Tinyshop.
How do I fix CVE-2020-21554?
No fix has been published for CVE-2020-21554 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-2020-21554 being exploited?
There is no known exploitation of CVE-2020-21554 in the wild and no public exploit code.
Sources
Also known as GHSA-mp49-872p-4w68.