CVE-2023-29201
XWiki Commons are technical libraries common to several other top level XWiki projects. The "restricted" mode of the HTML cleaner in XWiki, introduced in version 4.2-milestone-1, only escaped <script> and <style>-tags but neither attributes that can be used to inject scripts nor other dangerous HTML tags like <iframe>. As a consequence, any code relying on this "restricted" mode for security is vulnerable to JavaScript injection ("cross-site scripting"/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.
| Software | From | Fixed in |
|---|---|---|
org.xwiki.commons / xwiki-commons-xml
|
4.2-milestone-1 | 14.6-rc-1 |
| xwiki / xwiki | 5.0 | 14.5.x |
- https://github.com/xwiki/xwiki-commons/commit/4a185e0594d90cd4916d60aa60bb4333dc5623b2
- https://github.com/xwiki/xwiki-commons/commit/b11eae9d82cb53f32962056b5faa73f3720c6182
- https://github.com/xwiki/xwiki-commons/security/advisories/GHSA-m3jr-cvhj-f35j
- https://jira.xwiki.org/browse/XCOMMONS-1680
- https://jira.xwiki.org/browse/XCOMMONS-2426
- https://jira.xwiki.org/browse/XWIKI-9118
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