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List:       full-disclosure
Subject:    [FD] [KIS-2023-02] Tiki Wiki CMS Groupware <= 24.0 (structlib.php) PHP Code Injection Vulnerability
From:       Egidio Romano <research () karmainsecurity ! com>
Date:       2023-01-09 20:09:19
Message-ID: 9006b663bd1cdadc2ce7dbd8aa7e1575 () karmainsecurity ! com
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--------------------------------------------------------------------------------
Tiki Wiki CMS Groupware <= 24.0 (structlib.php) PHP Code Injection 
Vulnerability
--------------------------------------------------------------------------------


[-] Software Link:

https://tiki.org


[-] Affected Versions:

Version 24.0 and prior versions.


[-] Vulnerability Description:

The vulnerability is located in the /lib/structures/structlib.php 
script, specifically in the StructLib::structure_to_webhelp() method, 
which is using an eval() call with user-controlled input. This can be 
exploited by malicious users to inject and execute arbitrary PHP code. 
Successful exploitation of this vulnerability requires the 
"feature_create_webhelp" to be enabled and an account with permissions 
to create a wiki page.


[-] Solution:

Upgrade to version 24.1 or later.


[-] Disclosure Timeline:

[08/03/2022] - Vendor notified
[23/08/2022] - Version 24.1 released
[09/01/2023] - Public disclosure


[-] CVE Reference:

The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2023-22853 to this vulnerability.


[-] Credits:

Vulnerability discovered by Egidio Romano.


[-] Original Advisory:

http://karmainsecurity.com/KIS-2023-02

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