The telnet server for 3Com hardware such as PS40 SuperStack II does not delay or disconnect remote attackers who provide an incorrect username or password, which makes it easier to break into the server via brute force password guessing.

BID:3034 | URL:http://www.securityfocus.com/bid/3034 | BUGTRAQ:20010712 3Com TelnetD | URL:http://www.securityfocus.com/archive/1/196957 | XF:3com-telnetd-brute-force(6855) | URL:https://exchange.xforce.ibmcloud.com/vulnerabilities/6855