WordPress Authenticated XXE attack when installation is running PHP 8

CVE-2021-29447
7.1HIGH

Key Information

Vendor
WordPress
Status
WordPress-develop
Vendor
CVE Published:
15 April 2021

Badges

👾 Exploit Exists🔴 Public PoC

Summary

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.

Affected Version(s)

wordpress-develop = >= 5.6.0, < 5.7.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-29447
Created by motikan2010

exploit_cve-2021-29447
Created by mega8bit

CVE-2021-29447-PoC
Created by 0xRar

EPSS Score

2% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Risk change from: 6.5 to: 7.1 - (HIGH)

  • 👾

    Exploit exists.

  • Vulnerability published.

  • Vulnerability Reserved.

Collectors

NVD DatabaseMitre Database14 Proof of Concept(s)
.