CVE-2023-29201

Dashboard / Vulnerabilities / CVE-2023-29201

CVE-2023-29201

Summary: org.xwiki.commons:xwiki-commons-xml Cross-site Scripting vulnerability

Details: 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.

References: https://jira.xwiki.org/browse/XCOMMONS-1680, https://jira.xwiki.org/browse/XCOMMONS-2426, https://jira.xwiki.org/browse/XWIKI-9118, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29201.json, https://github.com/xwiki/xwiki-commons/security/advisories/GHSA-m3jr-cvhj-f35j, https://nvd.nist.gov/vuln/detail/CVE-2023-29201, https://github.com/xwiki/xwiki-commons/commit/4a185e0594d90cd4916d60aa60bb4333dc5623b2, https://github.com/xwiki/xwiki-commons/commit/b11eae9d82cb53f32962056b5faa73f3720c6182