CVE-2023-32679 Remote Code Execution via unrestricted file extension in Craft CMS
An attacker with admin privileges in a development or improperly configured environment can achieve remote code execution via unrestricted file extensions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-32679?
CVE-2023-32679 is a high-severity code injection vulnerability in Craftcms Craft Cms, published on 19 May 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Craft CMS is an open source content management system. In affected versions of Craft CMS an unrestricted file extension may lead to Remote Code Execution. If the name parameter value is not empty string('') in the View.php's doesTemplateExist() -> resolveTemplate() -> _resolveTemplateInternal() -> _resolveTemplate() function, it returns directly without extension verification, so that arbitrary extension files are rendered as twig templates. When attacker with admin privileges on a DEV or an improperly configured STG or PROD environment, they can exploit this vulnerability to remote code execution. Code execution may grant the attacker access to the host operating system. This issue has been addressed in version 4.4.6. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Weakness: CWE-74
Which versions are affected by CVE-2023-32679?
2 open source packages ship an affected version, including craftcms/cms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
craftcms/cms Packagist | From 4.0.0 | 4.4.6 |
craftcms/cms Packagist | From 4.0.0 | 4.4.6 |
Products include Craftcms Craft Cms.
How do I fix CVE-2023-32679?
Upgrade craftcms/cms to 4.4.6 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2023-32679 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-32679 exists.
Other vulnerabilities in Craftcms Craft Cms
Sources
Also known as GHSA-vqxf-r9ph-cc9c.