WordPress Authenticated XXE attack when installation is running PHP 8
Vulnerability Description
Wordpress is an open source CMS. A user with the ability to upload files (like an Author) can exploit an XML parsing issue in the Media Library leading to XXE attacks. This requires WordPress installation to be using PHP 8. Access to internal files is possible in a successful XXE attack. This has been patched in WordPress version 5.7.1, along with the older affected versions via a minor release. We strongly recommend you keep auto-updates enabled.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-29447
Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rv47-pc52-qrhh
- https://wordpress.org/news/category/security/
- https://lists.debian.org/debian-lts-announce/2021/04/msg00017.html
- https://www.debian.org/security/2021/dsa-4896
- http://packetstormsecurity.com/files/163148/XML-External-Entity-Via-MP3-File-Upload-On-WordPress.html
- http://packetstormsecurity.com/files/164198/WordPress-5.7-Media-Library-XML-Injection.html
- https://blog.sonarsource.com/wordpress-xxe-security-vulnerability/
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