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How CVE-2025-22777 Works
The vulnerability in GiveWP (versions up to 3.19.3) arises from improper deserialization of user-supplied data, enabling remote attackers to inject arbitrary objects into the application. This occurs when untrusted serialized data is passed to PHP’s `unserialize()` function without proper validation. Attackers can craft malicious payloads to execute arbitrary code, manipulate application logic, or escalate privileges. The flaw is particularly dangerous in donation plugins like GiveWP, where user input flows through multiple processing layers. Exploitation can lead to full site compromise, data theft, or unauthorized fund diversion.
DailyCVE Form
Platform: WordPress (GiveWP)
Version: ≤ 3.19.3
Vulnerability: Object Injection
Severity: Critical
Date: 06/04/2025
Prediction: Patch expected by 06/18/2025
What Undercode Say:
Exploitation Analysis
1. Payload Crafting:
$malicious = serialize(new ExploitClass("rm -rf /"));
2. Trigger via Donation Form:
POST /wp-json/givewp/v1/donations HTTP/1.1
Host: target.com
{"data":"O:10:\"ExploitClass\":1:{s:4:\"code\";s:10:\"evil_code\";}"}
Detection & Mitigation
1. Pre-Patch Detection:
grep -r "unserialize(" /var/www/html/wp-content/plugins/givewp/
2. WAF Rule (ModSecurity):
SecRule REQUEST_BODY "@rx (O:[0-9]+:\"[^\"]+\")" "id:1001,deny,status:403"
3. Temporary Fix:
// Override vulnerable function
if (!function_exists('safe_unserialize')) {
function safe_unserialize($data) {
if (preg_match('/^[a-zA-Z0-9\/+]+={0,2}$/', $data)) {
return unserialize(base64_decode($data));
}
throw new Exception("Invalid serialized data");
}
}
Post-Patch Actions
1. Update Command:
wp plugin update givewp --allow-root
2. Log Audit:
journalctl -u apache2 --since "2025-06-01" | grep "givewp"
Exploit Impact Reduction
- Disable REST API endpoints for unauthenticated users:
add_filter('givewp_rest_api_public_routes', '__return_empty_array');
Forensics
1. Memory Dump Analysis:
gdb -p $(pidof php-fpm) -ex "dump memory /tmp/givewp_dump 0x00007f0000000000 0x00007f0001000000"
2. YARA Rule for Artifacts:
rule givewp_exploit {
strings: $s = "O:10:\"ExploitClass\""
condition: $s
}
No further commentary.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
