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      <title>CVE-2024-37899 — Disabling a user account changes its author, allowing RCE from user account in XWiki</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2024-37899</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; xwiki-platform, xwiki&lt;/p&gt;
&lt;p&gt;XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. When an admin disables a user account, the user&amp;#39;s profile is executed with the admin&amp;#39;s rights. This allows a user to place malicious code in the user profile before getting an admin to disable the user account. To reproduce, as a user without script nor programming rights, edit the about section of your user profile and add `{{groovy}}services.logging.getLogger(&amp;#34;attacker&amp;#34;).error(&amp;#34;Hello from Groovy!&amp;#34;){{/groovy}}`.
As an admin, go to the user profile and click the &amp;#34;Disable this account&amp;#34; button. Then, reload the page. If the logs show `attacker - Hello from Groovy!` then the instance is vulnerable. This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.&lt;/p&gt;
&lt;p&gt;### Workarounds
We&amp;#39;re not aware of any workaround except upgrading.&lt;/p&gt;
&lt;p&gt;### References
* https://jira.xwiki.org/browse/XWIKI-21611
* https://github.com/xwiki/xwiki-platform/commit/f89c8f47fad6e5cc7e68c69a7e0acde07f5eed5a&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; xwiki-platform, xwiki&lt;/p&gt;
&lt;p&gt;XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. When an admin disables a user account, the user&amp;#39;s profile is executed with the admin&amp;#39;s rights. This allows a user to place malicious code in the user profile before getting an admin to disable the user account. To reproduce, as a user without script nor programming rights, edit the about section of your user profile and add `{{groovy}}services.logging.getLogger(&amp;#34;attacker&amp;#34;).error(&amp;#34;Hello from Groovy!&amp;#34;){{/groovy}}`.
As an admin, go to the user profile and click the &amp;#34;Disable this account&amp;#34; button. Then, reload the page. If the logs show `attacker - Hello from Groovy!` then the instance is vulnerable. This has been patched in XWiki 14.10.21, 15.5.5, 15.10.6 and 16.0.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.&lt;/p&gt;
&lt;p&gt;### Workarounds
We&amp;#39;re not aware of any workaround except upgrading.&lt;/p&gt;
&lt;p&gt;### References
* https://jira.xwiki.org/browse/XWIKI-21611
* https://github.com/xwiki/xwiki-platform/commit/f89c8f47fad6e5cc7e68c69a7e0acde07f5eed5a&lt;/p&gt;</content:encoded>
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