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 54%

What is CVE-2018-20148?

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.

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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

54% 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

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