CVE-2021-20127 Path traversal in Draytek VigorConnect
Authenticated attackers can delete arbitrary files with root privileges via path traversal in the Html5Servlet endpoint of Draytek VigorConnect.
- 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-2021-20127?
CVE-2021-20127 is a high-severity path traversal vulnerability in Draytek VigorConnect, published on 13 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An arbitrary file deletion vulnerability exists in the file delete functionality of the Html5Servlet endpoint of Draytek VigorConnect 1.6.0-B3. This allows an authenticated user to arbitrarily delete files in any location on the target operating system with root privileges.
Which versions are affected by CVE-2021-20127?
It affects 1 product.
Products include Draytek Vigorconnect.
How do I fix CVE-2021-20127?
No fix has been published for CVE-2021-20127 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-2021-20127 being exploited?
There is no known exploitation of CVE-2021-20127 in the wild and no public exploit code.
Other vulnerabilities in Draytek VigorConnect
- CVE-2021-20123 Draytek VigorConnect Path Traversal Vulnerability
- CVE-2021-20124 Draytek VigorConnect Path Traversal Vulnerability
- CVE-2021-20125 File upload in Draytek VigorConnect
- CVE-2021-20126 Cross-site request forgery in Draytek VigorConnect
- CVE-2021-20129 Information disclosure in Draytek VigorConnect
Sources
Also known as GHSA-x2rp-7w26-4883.