Run Shell Command allows Cross-Site Request Forgery
Critical severity
GitHub Reviewed
Published
Nov 20, 2023
in
xwiki-contrib/application-admintools
•
Updated Nov 20, 2023
Package
Affected versions
>= 4.4, < 4.5.1
Patched versions
4.5.1
Description
Published by the National Vulnerability Database
Nov 20, 2023
Published to the GitHub Advisory Database
Nov 20, 2023
Reviewed
Nov 20, 2023
Last updated
Nov 20, 2023
Impact
A cross site request forgery vulnerability in the admin tool for executing shell commands on the server allows an attacker to execute arbitrary shell commands by tricking an admin into loading the URL with the shell command. A very simple possibility for an attack are comments. When the attacker can leave a comment on any page in the wiki it is sufficient to include an image with an URL like
/xwiki/bin/view/Admin/RunShellCommand?command=touch%20/tmp/attackedin the comment. When an admin views the comment, the file/tmp/attackedwill be created on the server. The output of the command is also vulnerable to XWiki syntax injection which offers a simple way to execute Groovy in the context of the XWiki installation and thus an even easier way to compromise the integrity and confidentiality of the whole XWiki installation.Patches
This has been patched by adding a form token check in version 4.5.1 of the admin tools.
Workarounds
The patch can be applied manually to the affected wiki pages. Alternatively, the document
Admin.RunShellCommandcan also be deleted if the possibility to run shell commands isn't needed.References
References