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- #
- # (C) Tenable Network Security
- #
-
- if(description)
- {
- script_id(14829);
- script_bugtraq_id(11257);
- script_version ("$Revision: 1.1 $");
- name["english"] = "Intellipeer POP3 server user account enumeration";
- script_name(english:name["english"]);
-
- desc["english"] = "
- The remote POP3 server (probably intellipeer pop3 server) is vulnerable to
- an account enumeration issue.
-
- If an attacker attempts to log into the remote host by submitting a bogus
- username, then the server will reply with a specific error message if the
- account is non-existant, while it will reply with another message if the
- account exists.
-
- An attacker may use this flaw to set up a brute force attack against the
- remote server to obtain a list of valid user names and accounts.
-
- Solution : Upgrade to the newest version of this server or change it
- Risk factor : Medium";
-
- script_description(english:desc["english"]);
-
- summary["english"] = "Checks for a flaw in Intellipeer pop3";
- script_summary(english:summary["english"]);
-
- script_category(ACT_GATHER_INFO);
-
- script_copyright(english:"This script is Copyright (C) 2004 Tenable Network Security");
- family["english"] = "Misc.";
- script_family(english:family["english"]);
-
- script_dependencie("find_service.nes");
- script_require_ports("Services/pop3", 110);
- exit(0);
- }
-
- #
- # The script code starts here
- #
- include("misc_func.inc");
-
- port = get_kb_item("Services/pop3");
- if(!port) port = 110;
- if ( ! get_port_state(port) ) exit(0);
-
- soc = open_sock_tcp(port);
- if ( ! soc ) exit(0);
-
- banner = recv_line(socket:soc, length:4096);
- if ( ! banner ) exit(0);
- if ("POP3 server ready <" >!< banner ) exit(0);
- send(socket:soc, data:'USER nessus' + rand() + '\r\n');
- rep = recv_line(socket:soc, length:4096);
- if ( ! rep ) exit(0);
- if (egrep(pattern:"^-ERR nessus[0-9]* unknown account", string:rep) )
- {
- security_warning(port);
- }
-
-