CVE-2021-29447

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 v3 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:N/A:N

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
http://packetstormsecurity.com/files/163148/XML-External-Entity-Via-MP3-File-Upload-On-WordPress.html	Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/164198/WordPress-5.7-Media-Library-XML-Injection.html	Exploit Third Party Advisory VDB Entry
https://blog.sonarsource.com/wordpress-xxe-security-vulnerability/	Exploit Third Party Advisory
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rv47-pc52-qrhh	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00017.html	Mailing List Third Party Advisory
https://wordpress.org/news/category/security/	Release Notes Vendor Advisory
https://www.debian.org/security/2021/dsa-4896	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:10.0:::::::*

History

No history.

Information

Published : 2021-04-15 21:15

Updated : 2022-10-27 23:06

NVD link : CVE-2021-29447

Mitre link : CVE-2021-29447

CVE.ORG link : CVE-2021-29447

JSON object : View

Products Affected

debian

debian_linux

wordpress

wordpress

CWE

CWE-611

Improper Restriction of XML External Entity Reference

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