CVE-2017-16085 Directory Traversal in tinyserver2
An attacker can read arbitrary files from the server filesystem by exploiting a directory traversal vulnerability in the tinyserver2 static webserver.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-16085?
CVE-2017-16085 is a high-severity path traversal vulnerability in HackerOne tinyserver2 node module, published on 7 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
tinyserver2 is a webserver for static files. tinyserver2 is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "../" in the URL.
Weakness: CWE-22
Which versions are affected by CVE-2017-16085?
2 open source packages ship an affected version, including tinyserver2. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
tinyserver2 npm | All versions | 0.6.0 |
tinyserver2 npm | All versions | 0.6.0 |
Products include Tinyserver2 Project Tinyserver2.
How do I fix CVE-2017-16085?
Upgrade tinyserver2 to 0.6.0 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2017-16085 being exploited?
There is no known exploitation of CVE-2017-16085 in the wild and no public exploit code.
Sources
Also known as GHSA-g8wf-rcg3-qw4q.