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
For more information
If you have any questions or comments about this advisory:
Impact
Any user who can view
Invitation.WebHomecan 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:{{cache}}{{groovy}}new File("/tmp/exploit.txt").withWriter { out -> out.println("Attacked from invitation!"); }{{/groovy}}{{/cache}}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.InvitationCommonandInvitation.InvitationConfig.References
For more information
If you have any questions or comments about this advisory: