![]() ![]() A script could be used to identify all installed documents and delete the history for them. As a workaround, admins can manually delete old revisions of affected documents. This vulnerability has been patched in XWiki 14.10.7 and 15.2RC1 by forcing old revisions to be executed in a restricted mode that disables all script macros. Further, this vulnerability doesn't affect content that is only loaded from the current version of a document like the code of wiki macros or UI extensions. This vulnerability doesn't affect freshly installed versions of XWiki. This vulnerability also affects manually added script macros that contained security vulnerabilities that were later fixed by changing the script macro without deleting the versions with the security vulnerability from the history. Therefore, this affects the confidentiality, integrity and availability of the whole XWiki installation. When XWiki is upgraded from a version before the fix for it (e.g., 14.3) to a version including the fix (e.g., 14.4), the vulnerability can still be reproduced by adding `rev=1.1` to the URL used in the reproduction steps so remote code execution is possible even after upgrading. The severity of this depends on the fixed vulnerability, for the purpose of this advisory take CVE-2022-36100/GHSA-2g5c-228j-p52x as example - it is easily exploitable with just view rights and critical. In some cases, it's still possible to exploit the vulnerability that was fixed in the new version. ![]() When an XWiki installation is upgraded and that upgrade contains a fix for a bug in a document, just a new version of that document is added. XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. ![]()
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