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CVE-2021-29447

WordPress Authenticated XXE attack when installation is running PHP 8

Published: Apr 15, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-611
NVD MITRE
7.1CVSSHIGH
EPSS Score
85.7%
Top 0.3%
CISA KEV
Not in KEV
Exploits
3 Known
Remediation
Patch Available
Am I actually vulnerable?2 Nuclei templates available — see how to check your systems. How to verify

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-611

Affected Products

wordpress-developWordPressWeb & CMS Plugins
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
WordPressWordPress FoundationWeb & CMS Plugins
wordpresswordpress
On-premWeb App
Web & CMS Plugins / cms-core
debian linuxdebian
On-premOS
Operating Systems / linux-distro
wordpressoss-projectUSWeb & CMS Pluginsaka wp, wordpress.org, wordpress mu
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
wordpress foundationoss-projectUSWeb & CMS Plugins
debianoss-projectGBOperating Systemsaka debian gnu/linux

Attack Graph

Products CVE Techniques Tactics

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Exploitability

3 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Initial Access
View detailed technique mapping

References

https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rv47-pc52-qrhh
github.com
https://wordpress.org/news/category/security/
wordpress.org
https://lists.debian.org/debian-lts-announce/2021/04/msg00017.html
lists.debian.org
and 8 more references View all →

Timeline

Published
Apr 15, 2021
Last Updated
Nov 21, 2024

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