CVE-2021-29447
WordPress XML External Entity Injection (XXE) 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.
INFO
Published Date :
April 15, 2021, 9:15 p.m.
Last Modified :
Oct. 27, 2022, 11:06 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.2
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2021-29447 has a 56 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-29447.
| URL | 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-29447 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-29447 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Oct. 27, 2022
Action Type Old Value New Value Changed Reference Type https://blog.sonarsource.com/wordpress-xxe-security-vulnerability/ No Types Assigned https://blog.sonarsource.com/wordpress-xxe-security-vulnerability/ Exploit, Third Party Advisory -
CVE Modified by [email protected]
Sep. 13, 2022
Action Type Old Value New Value Added Reference https://blog.sonarsource.com/wordpress-xxe-security-vulnerability/ [No Types Assigned] -
Modified Analysis by [email protected]
Dec. 16, 2021
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/163148/XML-External-Entity-Via-MP3-File-Upload-On-WordPress.html No Types Assigned http://packetstormsecurity.com/files/163148/XML-External-Entity-Via-MP3-File-Upload-On-WordPress.html Third Party Advisory, VDB Entry Changed Reference Type http://packetstormsecurity.com/files/164198/WordPress-5.7-Media-Library-XML-Injection.html No Types Assigned http://packetstormsecurity.com/files/164198/WordPress-5.7-Media-Library-XML-Injection.html Exploit, Third Party Advisory, VDB Entry -
CVE Modified by [email protected]
Sep. 20, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/164198/WordPress-5.7-Media-Library-XML-Injection.html [No Types Assigned] -
CVE Modified by [email protected]
Jun. 15, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/163148/XML-External-Entity-Via-MP3-File-Upload-On-WordPress.html [No Types Assigned] -
Modified Analysis by [email protected]
Jun. 02, 2021
Action Type Old Value New Value Changed Reference Type https://www.debian.org/security/2021/dsa-4896 No Types Assigned https://www.debian.org/security/2021/dsa-4896 Third Party Advisory Added CWE NIST CWE-611 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 23, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4896 [No Types Assigned] -
Initial Analysis by [email protected]
Apr. 22, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rv47-pc52-qrhh No Types Assigned https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rv47-pc52-qrhh Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/04/msg00017.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/04/msg00017.html Mailing List, Third Party Advisory Changed Reference Type https://wordpress.org/news/category/security/ No Types Assigned https://wordpress.org/news/category/security/ Release Notes, Vendor Advisory Added CPE Configuration OR *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.6.0 up to (excluding) 5.7.1 -
CVE Modified by [email protected]
Apr. 21, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/04/msg00017.html [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-29447 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-29447
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
2.93 }} 0.21%
score
0.90989
percentile