CVE-2023-33177: Xibo CMS vulnerable to Remote Code Execution through Zip Slip
Xibo is a content management system (CMS). A path traversal vulnerability exists in the Xibo CMS whereby a specially crafted zip file can be uploaded to the CMS via the layout import function by an authenticated user which would allow creation of files outside of the CMS library directory as the webserver user. This can be used to upload a PHP webshell inside the web root directory and achieve remote code execution as the webserver user. Users should upgrade to version 2.3.17 or 3.3.5, which fix this issue. Customers who host their CMS with Xibo Signage have already received an upgrade or patch to resolve this issue regardless of the CMS version that they are running.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Xibo CMSto a version that resolves this vulnerability.Fixed in 2.3.17 - Upgrade
Upgrade
Xibo CMSto a version that resolves this vulnerability.Fixed in 3.3.5
Event History
Frequently Asked Questions
What is the severity of CVE-2023-33177?
CVE-2023-33177 has a medium severity rating due to its potential for exploitation by authenticated users.
How do I fix CVE-2023-33177?
To fix CVE-2023-33177, update Xibo CMS to version 2.3.17 or later, or to version 3.3.6 or later.
What causes CVE-2023-33177?
CVE-2023-33177 is caused by a path traversal vulnerability that allows file creation outside the CMS library.
Who is affected by CVE-2023-33177?
CVE-2023-33177 affects users of Xibo CMS versions prior to 2.3.17 and between 3.0.0 and 3.3.5.
What types of attacks can CVE-2023-33177 enable?
CVE-2023-33177 can enable unauthorized file uploads and potential remote code execution on the server.