CVE-2024-41947: XWiki Platform XSS through conflict resolution
First published: Wed Jul 31 2024(Updated: )
### Impact By creating a conflict when another user with more rights is currently editing a page, it is possible to execute JavaScript snippets on the side of the other user, which compromises the confidentiality, integrity and availability of the whole XWiki installation. To reproduce on a XWiki instance, a user with admin rights needs to edit a document without saving right away. Then, as another user without any other right than edit on the specific document, change the whole content to `<script>alert('XSS')</script>`. When the admin user then saves the document, a conflict popup appears. If they select "Fix each conflict individually" and see an alert displaying "XSS", then the instance is vulnerable. ### Patches This has been patched in XWiki 15.10.8 and 16.3.0RC1. ### Workarounds We're not aware of any workaround except upgrading. ### References * https://jira.xwiki.org/browse/XWIKI-21626 * https://github.com/xwiki/xwiki-platform/commit/821d43ec45e67d45a6735a0717b9b77fffc1cd9f ### 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)
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| maven/org.xwiki.platform:xwiki-platform-web-templates | >=16.0.0-rc-1<16.3.0-rc-1 | 16.3.0-rc-1 |
| maven/org.xwiki.platform:xwiki-platform-web-templates | >=11.8-rc-1<15.10.8 | 15.10.8 |
| Xwiki Xwiki | >=11.8<15.10.8 | |
| Xwiki Xwiki | >=16.0<16.3.0 |
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Reference Links
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-692v-783f-mg8x
- https://github.com/xwiki/xwiki-platform/commit/821d43ec45e67d45a6735a0717b9b77fffc1cd9f
- https://github.com/xwiki/xwiki-platform/commit/e00e159d3737397eebd1f6ff925c1f5cb7cdec34
- https://jira.xwiki.org/browse/XWIKI-21626
- https://nvd.nist.gov/vuln/detail/CVE-2024-41947
- https://github.com/advisories/GHSA-692v-783f-mg8x (Advisory)
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