Headline
GHSA-q9hg-9qj2-mxf9: XPlatform Wiki vulnerable to cross-site scripting via xcontinue parameter in previewactions template
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
- Email us at Security Mailing List
Attribution
This vulnerability has been reported by René de Sain @renniepak.
Package
maven org.xwiki.platform:xwiki-platform-flamingo-skin-resources (Maven)
Affected versions
>= 6.1-rc-1, < 14.10.5
>= 15.0-rc-1, < 15.1-rc-1
Patched versions
14.10.5
15.1-rc-1
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:
/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: xwiki/xwiki-platform@9f01166
For more information
If you have any questions or comments about this advisory:
- Open an issue in Jira XWiki.org
- Email us at Security Mailing List
Attribution
This vulnerability has been reported by René de Sain @renniepak.
References
- GHSA-q9hg-9qj2-mxf9
- xwiki/xwiki-platform@9f01166
- https://jira.xwiki.org/browse/XWIKI-20342
- https://jira.xwiki.org/browse/XWIKI-20583
tmortagne published to xwiki/xwiki-platform
Jun 20, 2023
Published to the GitHub Advisory Database
Jun 20, 2023
Reviewed
Jun 20, 2023
Related news
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. 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. The vulnerability has been patched in XWiki 14.10.5 and 15.1-rc-1.