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

Open Source and information security mailing list archives

Message-ID: <790562a5871ce5e43d62bc9c26601f53@karmainsecurity.com>
Date: Fri, 27 Oct 2023 11:45:29 +0200
From: Egidio Romano <research@...mainsecurity.com>
To: Full Disclosure <fulldisclosure@...lists.org>,
 submissions@...ketstormsecurity.com
Subject: [FD] [KIS-2023-12] phpFox <= 4.8.13 (redirect) PHP Object Injection
 Vulnerability

--------------------------------------------------------------
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
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