CommuniGatePro 3.1 for NT DoS

[n-miwa () LAC CO JP (Nobuo Miwa)]

Hi,

I reported a buffer overflow vulnerability on CommuniGatePro 3.1 for NT
to support () stalker com. And they fixed immediately.

It's simple buffer overflow, actually.

  1. connect to port 8010 (http configuration from remote browser)
  2. send 70000 of 'a' + "\r\n"
  3. connect to any port(25,8010,..) just like "telnet server 25"
  4. Access violation

Their reply is following..
  Fixed in the current 3.2 betas. Please install either the 3.2b5 or the
  3.2b7 that should be out by Monday - 3.2b6 had many internal changes
  and a couple of bugs have been found there.

<Nobuo Miwa> n-miwa () lac co jp  ( @ @ ) http://www.lac.co.jp/security/
--------------------------o00o--(. .)--o00o--------------------------