CVE-2021-29447

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.

References

https://www.debian.org/security/2021/dsa-4896

https://wordpress.org/news/category/security/

https://lists.debian.org/debian-lts-announce/2021/04/msg00017.html

https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rv47-pc52-qrhh

http://packetstormsecurity.com/files/163148/XML-External-Entity-Via-MP3-File-Upload-On-WordPress.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3