Full Disclosure mailing list archives
Re: lots of connections to 64.40.117.19 port 80
From: news () dmcdonald net
Date: Fri, 18 Apr 2008 16:11:53 +0100 (BST)
J, Eh? The closest thing I can think of to what you're saying is if the cause of a DDOS was stored XSS on a popular site(s) being used get users browsers to request information from 64.40.117.19. The XSS would be done else where, and the DDOS attack itself would contain no 'payload'. In which case filtering user input on his side isnt going to anything. Plus, you still have no reason for calling this a textbool case of XSS, or anything else for that matter. Without seeing the tcpdump, all we can do is reel of a list of things in might be. Best, Renski
News, I believe you are missing something. XSS is merely a type of vulnerability. It is very common for an XSS payload to include a DDoS component. If you had done your research before retorting you would have known this. J On Fri, 18 Apr 2008 10:25:38 -0400 news () dmcdonald net wrote:Joey, a text book case? Prehaps im missing something, but see nothing in Genbolds email which makes me consider XSS. XSS is often a small amount of traffic, with HTML and javascript in post request content or get request query strings. Ganbold, In my opinion, it's more likely it's one of the following * brute force or dictionary attack on a login form, prehaps using a botnet to mask the actual attacker * DDOS, again prehaps from a botnet * DOS, prehaps creating half open connects using a random spoofed source addresses (try and check to see if the addresses are random, or come for a fixed set of IPs). * Someone looking for hidden files and directories * An automated script scraping the website for dynamic or a large amount of content, or some other tool which is malfunctioning * The website is just really popular and your client needs to upgrade their kit Attempt to find out what kind of requests (if any) are being sent to the server, prehaps using a tool like wireshark, and that should tell you a little about what is going on. Best, RenskiGanbold, This sounds like a textbook case of Cross Site Scripting (XSS). Consider filtering user output more carefully. J On Fri, 18 Apr 2008 03:54:24 -0400 Ganbold<ganbold () micom mng net>wrote:Hi, Recently I have seen a lots of connections to 64.40.117.19 port80in one of our clients network. Connections are coming from all over the Internet (various different IPs) specifically to this IP. Due to this problem (I guess it is DDoS) one of our router's CPU usage grew up to 100% and stopped a service for a while. What kind of problem this could be? Has anybody seen this kind of attack before? I appreciate if somebody can enlighten me in this regard. thanks in advance, Ganbold -- The more control, the more that requires control. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/-- Click to make millions by owning your own franchise.http://tagline.hushmail.com/fc/Ioyw6h4eB8rENcAX63OKyEklXhdt1htMFgy2 tF8DC8RCA04pNI4uPe/_______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/-- Click for free info on java training and make up to $150K/ year. http://tagline.hushmail.com/fc/Ioyw6h4dF2hsyexjyN3z3Fpk0ZIJFvkDdT2Hf5OMzTplIBED7r44ry/
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Current thread:
- lots of connections to 64.40.117.19 port 80 Ganbold (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Michael Holstein (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Guido Landi (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Security (Apr 19)
- <Possible follow-ups>
- Re: lots of connections to 64.40.117.19 port 80 Joey Mengele (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 news (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Ganbold (Apr 20)
- Re: lots of connections to 64.40.117.19 port 80 php0t (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 news (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Joey Mengele (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 news (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Valdis . Kletnieks (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Joey Mengele (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Joey Mengele (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 news (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Joey Mengele (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 news (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Joey Mengele (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 Joey Mengele (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 offbitz (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 mcwidget (Apr 18)
- Re: lots of connections to 64.40.117.19 port 80 offbitz (Apr 18)
(Thread continues...)