| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2630-1, DSA-4896-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| wordpress (PTS) | jessie, jessie (lts) | 4.1.35+dfsg-0+deb8u1 | fixed |
| stretch (security), stretch (lts), stretch | 4.7.23+dfsg-0+deb9u1 | fixed |
| buster (security), buster, buster (lts) | 5.0.21+dfsg1-0+deb10u1 | fixed |
| bullseye (security), bullseye | 5.7.11+dfsg1-0+deb11u1 | fixed |
| bookworm (security), bookworm | 6.1.6+dfsg1-0+deb12u1 | fixed |
| sid, trixie | 6.6.1+dfsg1-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rv47-pc52-qrhh
Only an issue when installation runs under PHP8.
[jessie] - wordpress <not-affected> (Vulnerable code introduced later)