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 :
Nov. 21, 2024, 6:01 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Upgrade WordPress to version 5.7.1 or later.
- Upgrade the WordPress packages.
Public PoC/Exploit Available at Github
CVE-2021-29447 has a 96 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.
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.
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).
TryHackMe Modules
The objective is to conduct a full-scale security assessment of a WordPress-based web application, culminating in a complete server compromise. The assessment will focus on exploiting a specific, real-world vulnerability (CVE-2021-29447) to achieve initial access.
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POC to exploit WordPress 5.6-5.7 (PHP 8+) Authenticated XXE Injection.
Python
None
PoC for CVE-2021-29447
cve-2021-29447 python wordpress xxe exploit
Python
Notes about my cybersecurity learning (Pentester Job Role)
CVE POC repo 자동 수집기
Python
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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/163148/XML-External-Entity-Via-MP3-File-Upload-On-WordPress.html Added Reference http://packetstormsecurity.com/files/164198/WordPress-5.7-Media-Library-XML-Injection.html Added Reference https://blog.sonarsource.com/wordpress-xxe-security-vulnerability/ Added Reference https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rv47-pc52-qrhh Added Reference https://lists.debian.org/debian-lts-announce/2021/04/msg00017.html Added Reference https://wordpress.org/news/category/security/ Added Reference https://www.debian.org/security/2021/dsa-4896 -
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]
Vulnerability Scoring Details
Base CVSS Score: 7.1
Base CVSS Score: 4
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
88.73 }} 0.85%
score
0.99486
percentile