Headline
GHSA-7954-6m9q-gpvf: XWiki Platform privilege escalation (PR)/RCE from account through Invitation subject/message
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:
- Open the invitation application (Invitation.WebHome).
- Set the subject to
{{cache}}{{groovy}}new File("/tmp/exploit.txt").withWriter { out -> out.println("Attacked from invitation!"); }{{/groovy}}{{/cache}} - 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 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
- Email us at Security Mailing List
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- CVE-2023-37914
XWiki Platform privilege escalation (PR)/RCE from account through Invitation subject/message
Critical severity GitHub Reviewed Published Aug 17, 2023 in xwiki/xwiki-platform • Updated Aug 18, 2023
Package
maven org.xwiki.platform:xwiki-platform-invitation-ui (Maven)
Affected versions
>= 2.5-m-1, < 14.4.8
>= 14.5, < 14.10.6
>= 15.0-rc-1, < 15.2-rc-1
Patched versions
14.4.8
14.10.6
15.2-rc-1
Description
Published to the GitHub Advisory Database
Aug 18, 2023
Last updated
Aug 18, 2023
Related news
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. 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 vulnerability has been patched on XWiki 14.4.8, 15.2-rc-1, and 14.10.6. Users are advised to upgrade. Users unable to upgrade may manually apply the patch on `Invitation.InvitationCommon` and `Invitation.InvitationConfig`, but there are otherwise no known workarounds for this vulnerability.