CVE-2018-16831 Smarty Path Traversal Vulnerability
Attackers can bypass trusted directory restrictions in Smarty to read arbitrary files via path traversal in include statements.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-16831?
CVE-2018-16831 is a medium-severity path traversal vulnerability in n/a, published on 11 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Smarty before 3.1.33-dev-4 allows attackers to bypass the trusted_dir protection mechanism via a file:./../ substring in an include statement.
Weakness: CWE-22
Which versions are affected by CVE-2018-16831?
2 open source packages ship an affected version, including smarty/smarty. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
smarty/smarty Packagist | All versions | 3.1.33 |
smarty/smarty Packagist | All versions | 3.1.33 |
Products include Smarty Smarty.
How do I fix CVE-2018-16831?
Upgrade smarty/smarty to 3.1.33 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2018-16831 being exploited?
There is no known exploitation of CVE-2018-16831 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2018-16831, GHSA-65j5-vpm7-6xp4, UBUNTU-CVE-2018-16831.