XWiki Platform vulnerable to Cross-site Scripting through attachment filename in uploader
Moderate severity
GitHub Reviewed
Published
Jul 31, 2024
in
xwiki/xwiki-platform
•
Updated Sep 6, 2024
Package
Affected versions
>= 4.2-milestone-3, < 14.10.21
>= 15.0-rc-1, < 15.5.5
>= 15.6-rc-1, < 15.10.6
>= 16.0.0-rc-1, < 16.0.0
Patched versions
14.10.21
15.5.5
15.10.6
16.0.0
Description
Published to the GitHub Advisory Database
Jul 31, 2024
Reviewed
Jul 31, 2024
Published by the National Vulnerability Database
Jul 31, 2024
Last updated
Sep 6, 2024
Credits
-
RoboGR00t Finder
Impact
When uploading an attachment with a malicious filename, malicious JavaScript code could be executed. This requires a social engineering attack to get the victim into uploading a file with a malicious name. The malicious code is solely executed during the upload and affects only the user uploading the attachment. While this allows performing actions in the name of that user, it seems unlikely that a user wouldn't notice the malicious filename while uploading the attachment.
In order to reproduce, as any user, create a file named
"><img src=1 onerror=alert(1)>.jpg. Then go to any page where you have edit rights and upload the file in the attachments tab. If alerts appear and display "1", then the instance is vulnerable.Patches
This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.
Workarounds
We're not aware of any workaround except upgrading.
References
Attribution
This vulnerability has been independently reported by Aleksey Solovev (Positive Technologies) and Georgios Roumeliotis for TwelveSec.
References