Impact
If the JIRA macro is installed, any logged in XWiki user could edit his/her user profile wiki page and use that JIRA macro, specifying a fake JIRA URL that returns an XML specifying a DOCTYPE pointing to a local file on the XWiki server host and displaying that file's content in one of the returned JIRA fields (such as the summary or description for example).
For example:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE foo [ <!ENTITY xxe SYSTEM "file:///etc/passwd"> ]>
<rss version="0.92">
...
<item>
<title>&xxe;</title>
<link>https://jira.xwiki.org/browse/XE-307</link>
<project id="10222" key="XE">{RETIRED} XWiki Enterprise</project>
<description>&xxe;</description>
<environment/>
...
Patches
The vulnerability has been patched in the JIRA Extension v8.6.5.
Workarounds
No easy workaround except to upgrade (which is easy using the XWiki Extension Manager).
References
For more information
If you have any questions or comments about this advisory:
References
Impact
If the JIRA macro is installed, any logged in XWiki user could edit his/her user profile wiki page and use that JIRA macro, specifying a fake JIRA URL that returns an XML specifying a DOCTYPE pointing to a local file on the XWiki server host and displaying that file's content in one of the returned JIRA fields (such as the summary or description for example).
For example:
Patches
The vulnerability has been patched in the JIRA Extension v8.6.5.
Workarounds
No easy workaround except to upgrade (which is easy using the XWiki Extension Manager).
References
For more information
If you have any questions or comments about this advisory:
References