PHP Object Injection Vulnerability in WordPress Affecting Multiple Versions
CVE-2018-20148

9.8CRITICAL

Key Information:

Vendor
Wordpress
Status
WordPress
Vendor
CVE Published:
14 December 2018

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 52%

Summary

In specific WordPress versions, contributors can exploit a vulnerability through crafted metadata via the wp.getMediaItem XMLRPC call. This issue arises from improper handling of serialized data when interacting with phar URLs, particularly in the wp_get_attachment_thumb_file function. This flaw can lead to unauthorized access, allowing attackers to manipulate sensitive data and compromise site integrity.

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-2018-20148_exploit
Created by nth347

References

http://www.securityfocus.com/bid/106220
vdb-entryx_refsource_BID
https://wordpress.org/support/wordpress-version/version-5...
x_refsource_MISC
https://blog.secarma.co.uk/labs/near-phar-dangerous-unser...
x_refsource_MISC

EPSS Score

52% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.