Stop Spammers Security < 2022.6 - Unauthenticated PHP Object Injection
CVE-2022-4120

9.8CRITICAL

Key Information:

Vendor
Wordpress
Status
Stop Spammers Security | Block Spam Users, Comments, Forms
Vendor
CVE Published:
26 December 2022

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 25%

Summary

The Stop Spammers Security | Block Spam Users, Comments, Forms WordPress plugin before 2022.6 passes base64 encoded user input to the unserialize() PHP function when CAPTCHA are used as second challenge, which could lead to PHP Object injection if a plugin installed on the blog has a suitable gadget chain

Affected Version(s)

Stop Spammers Security | Block Spam Users, Comments, Forms 0 < 2022.6

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-2022-4120 - Proof of Concept

References

https://wpscan.com/vulnerability/e8bb79db-ef77-43be-b449-...
exploitvdb-entrytechnical-description

EPSS Score

25% 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

Credit

Seryeon Ham
WPScan
.