Arbitrary filesystem write access from velocity.
Package
Affected versions
>= 2.3.0, < 12.6.7
>= 12.7.0, < 12.10.3
Patched versions
12.6.7
12.10.3
Description
Published to the GitHub Advisory Database
Apr 28, 2022
Reviewed
Apr 28, 2022
Published by the National Vulnerability Database
May 2, 2022
Last updated
Jan 30, 2023
Credits
-
kurt-r2c Analyst
Impact
The velocity scripts is not properly sandboxed against using the Java File API to perform read or write operations on the filesystem. Now writing an attacking script in velocity requires the Script rights in XWiki so not all users can use it, and it also requires finding an XWiki API which returns a File.
Patches
The problem has been patched on versions 12.6.7, 12.10.3 and 13.0RC1.
Workarounds
There's no easy workaround for fixing this vulnerability other than upgrading and being careful when giving Script rights.
References
https://jira.xwiki.org/browse/XWIKI-5168
For more information
If you have any questions or comments about this advisory:
References