CVE-2018-16831: Path Traversal
First published: Thu Apr 26 2018(Updated: )
Smarty before 3.1.33-dev-4 allows attackers to bypass the trusted_dir protection mechanism via a `file:./../` substring in an include statement.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/smarty/smarty | <3.1.33 | |
| composer/smarty/smarty | <3.1.33 | 3.1.33 |
| Smarty | >=3.0.0<=3.1.32 |
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Reference Links
- https://github.com/smarty-php/smarty/issues/486
- https://nvd.nist.gov/vuln/detail/CVE-2018-16831
- https://github.com/smarty-php/smarty/commit/f9ca3c63d1250bb56b2bda609dcc9dd81f0065f8
- https://github.com/advisories/GHSA-65j5-vpm7-6xp4 (Advisory)
- https://github.com/FriendsOfPHP/security-advisories/blob/master/smarty/smarty/CVE-2018-16831.yaml
Frequently Asked Questions
What is the severity of CVE-2018-16831?
CVE-2018-16831 has been classified with a moderate severity level due to the potential for attackers to bypass security mechanisms.
How do I fix CVE-2018-16831?
To fix CVE-2018-16831, upgrade Smarty to version 3.1.33 or later.
What systems are affected by CVE-2018-16831?
CVE-2018-16831 affects Smarty versions before 3.1.33, specifically versions between 3.0.0 and 3.1.32.
What is the impact of exploiting CVE-2018-16831?
Exploiting CVE-2018-16831 allows attackers to execute arbitrary PHP code by bypassing the trusted_dir protection mechanism.
Is there a workaround for CVE-2018-16831?
Currently, the recommended workaround for CVE-2018-16831 is to restrict file access permissions and upgrade Smarty to a secure version.
- collector/friends-of-php
- agent/type
- agent/first-publish-date
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-65j5-vpm7-6xp4
- alias/CVE-2018-16831
- agent/software-canonical-lookup
- agent/severity
- agent/references
- agent/weakness
- agent/description
- collector/github-advisory
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/trending
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- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-cve
- source/NVD
- agent/author
- package-manager/composer
- vendor/smarty
- canonical/smarty
- version/smarty/3.0.0
- version/smarty/3.1.32