CVE-2021-32732: Cross-Site Request Forgery in xwiki-platform
First published: Fri Feb 04 2022(Updated: )
### Impact It's possible to know if a user has or not an account in a wiki related to an email address, and which username(s) is actually tied to that email by forging a request to the Forgot username page. Note that since this page does not have a CSRF check it's quite easy to perform a lot of those requests. ### Patches This issue has been patched in XWiki 12.10.5 and 13.2RC1. Two different patches are provided: - a first one to fix the CSRF problem - a more complex one that now relies on sending an email for the Forgot username process. ### Workarounds It's possible to fix the problem without uprading by editing the ForgotUsername page in version below 13.x, to use the following code: https://github.com/xwiki/xwiki-platform/blob/69548c0320cbd772540cf4668743e69f879812cf/xwiki-platform-core/xwiki-platform-administration/xwiki-platform-administration-ui/src/main/resources/XWiki/ForgotUsername.xml#L39-L123 In version after 13.x it's also possible to edit manually the forgotusername.vm file, but it's really encouraged to upgrade the version here. ### References * https://jira.xwiki.org/browse/XWIKI-18384 * https://jira.xwiki.org/browse/XWIKI-18408 ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira XWiki](https://jira.xwiki.org) * Email us at [security ML](mailto:security@xwiki.org)
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xwiki Xwiki | <12.10.5 | |
| Xwiki Xwiki | =13.0 | |
| Xwiki Xwiki | =13.1 |
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Reference Links
- https://github.com/xwiki/xwiki-platform/commit/69548c0320cbd772540cf4668743e69f879812cf
- https://github.com/xwiki/xwiki-platform/commit/f0440dfcbba705e03f7565cd88893dde57ca3fa8
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-vh5c-jqfg-mhrh
- https://jira.xwiki.org/browse/XWIKI-18384
- https://jira.xwiki.org/browse/XWIKI-18408
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- version/xwiki xwiki/13.0
- version/xwiki xwiki/13.1