Critical · published April 10, 2024
🔥 An unsuspecting user can craft a rogue skin that runs code with full privileges—just by editing their profile page! This vulnerability is like giving a guest at a party the ability to change the music playlist by simply writing their name on the guest list. What could be a simple playlist swap could easily become a wild DJ takeover! An attacker could exploit this to execute arbitrary code on the server, potentially leading to complete system compromise. This means they could read sensitive data, alter content, or even take control of the entire wiki platform without breaking a sweat. Absolutely devastating!
This vulnerability is like giving a guest at a party the ability to change the music playlist by simply writing their name on the guest list. What could be a simple playlist swap could easily become a wild DJ takeover! In versions 6.4-milestone-1 up to 15.10-rc-1, XWiki allows any user with page editing rights to create a custom skin with a template override that is executed with programming rights, enabling remote code execution. This flaw gives unwanted power to those who shouldn’t have it!
An attacker could exploit this to execute arbitrary code on the server, potentially leading to complete system compromise. This means they could read sensitive data, alter content, or even take control of the entire wiki platform without breaking a sweat. Absolutely devastating! To protect your instance, immediately upgrade to XWiki versions 14.10.19, 15.5.4, or 15.10RC1. There are no workarounds, so this update is critical to keep your wiki secure! You've got this! By following these steps, you'll lock down your system and maintain your security hero status! 🛡️