Vulnerability Description
XWiki Rendering is a generic Rendering system that converts textual input in a given syntax into another syntax. The cleaning of attributes during XHTML rendering, introduced in version 14.6-rc-1, allowed the injection of arbitrary HTML code and thus cross-site scripting via invalid attribute names. This can be exploited, e.g., via the link syntax in any content that supports XWiki syntax like comments in XWiki. When a user moves the mouse over a malicious link, the malicious JavaScript code is executed in the context of the user session. When this user is a privileged user who has programming rights, this allows server-side code execution with programming rights, impacting the confidentiality, integrity and availability of the XWiki instance. While this attribute was correctly recognized as not allowed, the attribute was still printed with a prefix `data-xwiki-translated-attribute-` without further cleaning or validation. This problem has been patched in XWiki 14.10.4 and 15.0 RC1 by removing characters not allowed in data attributes and then validating the cleaned attribute again. There are no known workarounds apart from upgrading to a version including the fix.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xwiki | Xwiki-Rendering | >= 14.6, < 14.10.4 |
Related Weaknesses (CWE)
References
- https://github.com/xwiki/xwiki-rendering/commit/f4d5acac451dccaf276e69f0b49b7222Patch
- https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-663w-2xp3-5739ExploitPatchVendor Advisory
- https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-6gf5-c898-7rxpExploitPatchVendor Advisory
- https://jira.xwiki.org/browse/XRENDERING-697ExploitIssue TrackingVendor Advisory
- https://github.com/xwiki/xwiki-rendering/commit/f4d5acac451dccaf276e69f0b49b7222Patch
- https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-663w-2xp3-5739ExploitPatchVendor Advisory
- https://github.com/xwiki/xwiki-rendering/security/advisories/GHSA-6gf5-c898-7rxpExploitPatchVendor Advisory
- https://jira.xwiki.org/browse/XRENDERING-697ExploitIssue TrackingVendor Advisory
FAQ
What is CVE-2023-37908?
CVE-2023-37908 is a vulnerability with a CVSS score of 9.0 (CRITICAL). XWiki Rendering is a generic Rendering system that converts textual input in a given syntax into another syntax. The cleaning of attributes during XHTML rendering, introduced in version 14.6-rc-1, all...
How severe is CVE-2023-37908?
CVE-2023-37908 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2023-37908?
Check the references section above for vendor advisories and patch information. Affected products include: Xwiki Xwiki-Rendering.