CVE-2023-33177
HighCVSS 8.8Exploitation Probability (EPSS)
Very high risk93th percentile - higher than 93% of all known CVEs
Summary
A path traversal vulnerability exists in the Xibo CMS that allows an authenticated user to upload a specially crafted zip file. This can lead to the creation of files outside the CMS library directory, enabling remote code execution.
Risk Assessment
This vulnerability poses a serious security risk, allowing attackers to upload malicious software and gain access to the system as the webserver user.
Recommendation
It is recommended to upgrade to version 2.3.17 or 3.3.5, which fix this issue. Customers using Xibo Signage have already received an upgrade or patch to resolve this issue.
Original NVD description (English source)
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.