Description
XWiki Rendering is a generic rendering system that converts textual input in a given syntax (wiki syntax, HTML, etc) into another syntax (XHTML, etc). Versions 16.10.9 and below, 17.0.0-rc-1 through 17.4.2 and 17.5.0-rc-1 through 17.5.0 have insufficient protection against {{/html}} injection, which attackers can exploit through RCE. Any user who can edit their own profile or any other document can execute arbitrary script macros, including Groovy and Python macros, which enable remote code execution as well as unrestricted read and write access to all wiki contents. This issue is fixed in versions 16.10.10, 17.4.3 and 17.6.0-rc-1.
Problem types
CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Product status
>= 17.0.0-rc-1, < 17.4.3
>= 17.5.0-rc-1, < 17.6.0-rc-1
References
jira.xwiki.org/browse/XRENDERING-793
jira.xwiki.org/browse/XRENDERING-792
jira.xwiki.org/browse/XRENDERING-693
github.com/...dering/security/advisories/GHSA-9xc6-c2rm-f27p
github.com/...ommit/12b780ccd5bca5fc8f74f46648d7e02fa04fbc11
github.com/...ommit/9b71a2ee035815cfc29cebbfe81dbdd98f941d49
jira.xwiki.org/browse/XRENDERING-693
jira.xwiki.org/browse/XRENDERING-792
jira.xwiki.org/browse/XRENDERING-793
jira.xwiki.org/browse/XWIKI-23378