CVE-2017-16762 Sanic arbitrary file read and directory traversal
An attacker can read arbitrary files from the server via directory traversal in the Sanic web framework.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-16762?
CVE-2017-16762 is a high-severity path traversal vulnerability in n/a, published on 10 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Sanic before 0.5.1 allows reading arbitrary files with directory traversal, as demonstrated by the /static/..%2f substring.
Weakness: CWE-22
Which versions are affected by CVE-2017-16762?
3 open source packages ship an affected version, including sanic. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
sanic PyPI | All versions | 0.5.1 |
sanic PyPI | All versions | 0.5.1 |
sanic PyPI | All versions | 0.5.1 |
Products include Sanic Project Sanic.
How do I fix CVE-2017-16762?
Upgrade sanic to 0.5.1 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2017-16762 being exploited?
There is no known exploitation of CVE-2017-16762 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-mpmf-hr8p-p49g, PYSEC-2017-40.