IPS Community Suite PHP Code Injection

CVE Category Price Severity
CVE-2021-32924 CWE-94 Unavailable High
Author Risk Exploitation Type Date
KingSkrupellos Critical Remote 2021-05-31
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N 0 0

CVSS vector description

Our sensors found this exploit at:

Below is a copy:

IPS Community Suite PHP Code Injection
IPS Community Suite <= (previewBlock) PHP Code Injection 

[-] Software Link:

[-] Affected Versions:

Version and prior versions.

[-] Vulnerability Description:

The vulnerability exists because the 
IPS\cms\modules\front\pages\_builder::previewBlock() method allows to 
pass arbitrary content to the IPS\_Theme::runProcessFunction() method, 
which will be used in a call to the eval() PHP function. This can be 
exploited to inject and execute arbitrary PHP code. Successful 
exploitation of this vulnerability requires an account with permission 
to manage the sidebar (such as a Moderator or Administrator) and the 
"cms" application to be enabled.

[-] Proof of Concept:


[-] Solution:

Apply the vendor patch or upgrade to version 4.6.0 or later.

[-] Disclosure Timeline:

[02/02/2021] - Vendor notified through HackerOne
[02/04/2021] - Asked for an update
[06/04/2021] - Vendor replies they already released a targeted patch
[13/05/2021] - CVE number assigned
[28/05/2021] - Public disclosure

[-] CVE Reference:

The Common Vulnerabilities and Exposures project (
has assigned the name CVE-2021-32924 to this vulnerability.

[-] Credits:

Vulnerability discovered by Egidio Romano.

[-] Other References:

[-] Original Advisory:

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