CVE-2023-37914
XWiki Platform privilege escalation (PR)/RCE from account through Invitation subject/message
Description
### Impact Any user who can view `Invitation.WebHome` can execute arbitrary script macros including Groovy and Python macros that allow remote code execution including unrestricted read and write access to all wiki contents. This can be reproduced with the following steps: 1. Open the invitation application (Invitation.WebHome). 1. Set the subject to `{{cache}}{{groovy}}new File("/tmp/exploit.txt").withWriter { out -> out.println("Attacked from invitation!"); }{{/groovy}}{{/cache}}` 1. Click "Preview" ### Patches The vulnerability has been patched on XWiki 14.4.8, 15.2-rc-1, and 14.10.6. ### Workarounds The vulnerability can be patched manually by applying the [patch](https://github.com/xwiki/xwiki-platform/commit/ff1d8a1790c6ee534c6a4478360a06efeb2d3591) on `Invitation.InvitationCommon` and `Invitation.InvitationConfig`. ### References - https://jira.xwiki.org/browse/XWIKI-20421 - https://github.com/xwiki/xwiki-platform/commit/ff1d8a1790c6ee534c6a4478360a06efeb2d3591 ### 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)
How to fix CVE-2023-37914
To remediate CVE-2023-37914, upgrade the affected package to a fixed version below.
- —upgrade to 14.4.8 or later
Is CVE-2023-37914 being exploited?
Low — EPSS is 4.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 2.5-m-1, < 14.4.8