CVE-2020-15171
Users with SCRIPT right can execute arbitrary code in XWiki
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: * Open an issue in [Jira XWiki](https://jira.xwiki.org) * Email us at [our security mailing list](mailto:security@xwiki.org)
How to fix CVE-2020-15171
To remediate CVE-2020-15171, upgrade the affected package to a fixed version below.
- —upgrade to 11.10.5 or later
Is CVE-2020-15171 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 11.10.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.6 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H |