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Users with SCRIPT right can access the application server instance manager and create arbitrary Java objects through $request binding

High
tmortagne published GHSA-7qw5-pqhc-xm4g Sep 10, 2020

Package

maven org.xwiki.platform:xwiki-platform-oldcore (Maven)

Affected versions

< 11.10.5, < 12.2.1

Patched versions

11.10.5, 12.2.1

Description

Impact

Any user with SCRIPT right (EDIT right before XWiki 7.4) can gain access to the application server Servlet context which contains tools allowing to instantiate arbitrary Java objects and invoke methods that may lead to arbitrary code execution.

Patches

It has been patched in both version XWiki 12.2.1 and XWiki 11.10.5.

Workarounds

The only workaround is to give SCRIPT right only to trusted users.

References

https://jira.xwiki.org/browse/XWIKI-17141
https://jira.xwiki.org/browse/XWIKI-17266

It's been reported by the GitHub Security Lab under #GHSL-2020-046.

For more information

If you have any questions or comments about this advisory:

Severity

High

CVE ID

CVE-2020-15171

Weaknesses

No CWEs