CVE-2023-35162
XWiki Platform vulnerable to cross-site scripting via xcontinue parameter in previewactions template
Description
### Impact Users are able to forge an URL with a payload allowing to inject Javascript in the page (XSS). It's possible to exploit the previewactions template to perform a XSS, e.g. by using URL such as: > <hostname>/xwiki/bin/get/FlamingoThemes/Cerulean?xpage=xpart&vm=previewactions.vm&xcontinue=javascript:alert(document.domain) This vulnerability exists since XWiki 6.1-rc-1. ### Patches The vulnerability has been patched in XWiki 14.10.5 and 15.1-rc-1. ### Workarounds It's possible to workaround the vulnerability by editing the template previewactions.vm to perform checks on it, but note that the appropriate fix involves new APIs that have been recently introduced in XWiki. See the referenced jira tickets. ### References * Jira ticket about the vulnerability: https://jira.xwiki.org/browse/XWIKI-20342 * Introduction of the macro used for fixing this type of vulnerability: https://jira.xwiki.org/browse/XWIKI-20583 * Commit containing the actual fix in the template: https://github.com/xwiki/xwiki-platform/commit/9f01166b1a8ee9639666099eb5040302df067e4d ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira XWiki.org](https://jira.xwiki.org/) * Email us at [Security Mailing List](mailto:security@xwiki.org) ### Attribution This vulnerability has been reported by René de Sain @renniepak.
How to fix CVE-2023-35162
To remediate CVE-2023-35162, upgrade the affected package to a fixed version below.
- —upgrade to 14.10.5 or later
Is CVE-2023-35162 being exploited?
Moderate — EPSS is 15.6%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- >= 6.1-rc-1, < 14.10.5