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XWiki Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2023-29201 - Vulnerability Database
XWikiplatform

XWiki Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2023-29201

Critical
Reference: CVE-2023-29201
NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2023-29201
Title: XWiki Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability
Overview:

XWiki Commons are technical libraries common to several other top level XWiki projects. The quotrestrictedquot mode of the HTML cleaner in XWiki introduced in version 4.2-milestone-1 only escaped ltscriptgt and ltstylegt-tags but neither attributes that can be used to inject scripts nor other dangerous HTML tags like ltiframegt. As a consequence any code relying on this quotrestrictedquot mode for security is vulnerable to JavaScript injection (quotcross-site scriptingquot/XSS). When a privileged user with programming rights visits such a comment in XWiki the malicious JavaScript code is executed in the context of the user session. This allows server-side code execution with programming rights impacting the confidentiality integrity and availability of the XWiki instance. This problem has been patched in XWiki 14.6 RC1 with the introduction of a filter with allowed HTML elements and attributes that is enabled in restricted mode. There are no known workarounds apart from upgrading to a version including the fix.