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GHSA-57q2-6cp4-9mq3
No affected components available
Impact
The XML export of a page in XWiki that can be triggered by any user with view rights on a page by appending ?xpage=xml to the URL includes password and email properties stored on a document that aren't named password or email. This allows any user to obtain the salted and hashed user account validation or password reset token. As those tokens are randomly generated strings, the immediate impact of this should be low. The user's password and email itself aren't exposed as those fields are named password and email and thus aren't affected. However, depending on how the wiki is used, there could be extensions or custom code that store passwords in plain text in such password properties that would be exposed by this vulnerability.
Patches
This vulnerability has been fixed by completely removing the output of password and email fields in this XML export in versions 17.2.0 RC1, 16.10.5 and 16.4.7.
Workarounds
If this XML export isn't needed, the file templates/xml.vm in the deployed WAR can be deleted. There isn't any feature in XWiki itself that depends on this XML export.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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