CVE-2024-37900: XWiki Platform vulnerable to Cross-site Scripting through attachment filename in uploader
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 https://jira.xwiki.org/browse/XWIKI-19611 https://jira.xwiki.org/browse/XWIKI-21769 https://jira.xwiki.org/browse/XWIKI-19602 https://github.com/xwiki/xwiki-platform/commit/910a5018a50039e8b24556573dfe342f143ef949
Attribution
This vulnerability has been independently reported by Aleksey Solovev (Positive Technologies) and Georgios Roumeliotis for TwelveSec.
Other sources
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. 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. This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2024-37900?
CVE-2024-37900 is categorized as a high-severity vulnerability due to the potential execution of malicious JavaScript during file uploads.
How do I fix CVE-2024-37900?
To fix CVE-2024-37900, upgrade to the latest version of XWiki as specified in the advisory, ensuring that you are using at least version 16.0.0.
What vulnerabilities does CVE-2024-37900 exploit?
CVE-2024-37900 exploits the lack of proper validation of filenames during file uploads, allowing execution of malicious code.
Which versions of XWiki are affected by CVE-2024-37900?
CVE-2024-37900 affects multiple versions of XWiki, including 14.10.21 and earlier, 15.0 to 15.10.6, and the release candidate of 16.0.0.
What kind of attack is required for CVE-2024-37900 to be successful?
A successful attack exploiting CVE-2024-37900 requires social engineering to trick users into uploading a file with a malicious filename.