[KIS-2023-12] phpFox <= 4.8.13 (redirect) PHP Object Injection Vulnerability

[Egidio Romano <research () karmainsecurity com>]

--------------------------------------------------------------
phpFox <= 4.8.13 (redirect) PHP Object Injection Vulnerability
--------------------------------------------------------------


[-] Software Link:

https://www.phpfox.com


[-] Affected Versions:

Version 4.8.13 and prior versions.


[-] Vulnerability Description:

User input passed through the "url" request parameter to the 
/core/redirect route is not properly sanitized before being used in a 
call to the unserialize() PHP function. This can be exploited by remote, 
unauthenticated attackers to inject arbitrary PHP objects into the 
application scope, allowing them to perform a variety of attacks, such 
as executing arbitrary PHP code.


[-] Proof of Concept:

https://karmainsecurity.com/pocs/CVE-2023-46817.php


[-] Solution:

Upgrade to version 4.8.14 or later.


[-] Disclosure Timeline:

[05/10/2023] - Vendor contacted through https://clients.phpfox.com
[05/10/2023] - Vendor response stating "we currently do not have such 
security requirements"
[06/10/2023] - CVE identifier requested
[09/10/2023] - Vulnerability details shared with the vendor, stating the 
issue is quite critical
[17/10/2023] - Vendor contacted again, asking for an update
[18/10/2023] - Vendor response stating "this issue is fixed in our 
latest version (4.8.13)", but that's not the truth
[26/10/2023] - Version 4.8.14 released
[27/10/2023] - CVE identifier assigned
[27/10/2023] - Public disclosure


[-] CVE Reference:

The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CVE-2023-46817 to this vulnerability.


[-] Credits:

Vulnerability discovered by Egidio Romano.


[-] Original Advisory:

https://karmainsecurity.com/KIS-2023-12


[-] Other References:

https://docs.phpfox.com/display/FOX4MAN/phpFox+4.8.14
_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: https://seclists.org/fulldisclosure/