| code | #
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if(description)
{
script_id(10681);
script_version ("1.23");
script_cve_id("CVE-2000-0960");
script_bugtraq_id(1787);
script_name(english:"Netscape Messenging Server POP3 Error Message User Account Enumeration");
script_set_attribute(attribute:"synopsis", value:
"The remote POP server allows an attacker to determine whether
a given username exists or not." );
script_set_attribute(attribute:"description", value:
"The remote POP server allows an attacker to obtain a list
of valid logins on the remote host, thanks to a brute-force
attack.
If the user connects to this port and issues the commands :
USER 'someusername'
PASS 'whatever'
the user will then get a different response whether the account
'someusername' exists or not." );
script_set_attribute(attribute:"solution", value:
"None at this time." );
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"plugin_publication_date", value: "2001/05/29");
script_set_attribute(attribute:"vuln_publication_date", value: "2000/10/11");
script_cvs_date("Date: 2018/07/17 12:00:07");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_set_attribute(attribute:"cpe",value:"cpe:/a:netscape:messaging_server");
script_end_attributes();
script_summary(english:"Checks the error messages issued by the pop3 server");
script_category(ACT_GATHER_INFO);
script_copyright(english:"This script is Copyright (C) 2001-2018 Tenable Network Security, Inc.");
script_family(english:"Misc.");
script_dependencie("find_service1.nasl");
script_exclude_keys("global_settings/supplied_logins_only");
script_require_ports("Services/pop3", 110);
exit(0);
}
#
# The script code starts here
#
include("audit.inc");
include("global_settings.inc");
include("pop3_func.inc");
if (supplied_logins_only) audit(AUDIT_SUPPLIED_LOGINS_ONLY);
port = get_kb_item("Services/pop3");
if (!port) port = 110;
banner = get_pop3_banner(port:port);
if ( ! banner || "Netscape Messaging Server" >!< banner ) exit(0);
if (get_port_state(port))
{
soc = open_sock_tcp(port);
if (soc)
{
r = recv_line(socket:soc, length:4096);
if(r)
{
send(socket:soc, data:string("USER nessus", rand(), "\r\n"));
r = recv_line(socket:soc, length:4096);
send(socket:soc, data:string("PASS nessus", rand(), "\r\n"));
r = recv_line(socket:soc, length:4096);
close(soc);
if(r && "User unknown" >< r)security_warning(port);
}
}
}
|