# # This script was written by David Maciejak # based on Michel Arboi work # # Ref: James Bercegay of the GulfTech Security Research Team # This script is released under the GNU GPLv2 if(description) { script_id(14646); script_cve_id("CVE-2004-1644"); script_bugtraq_id(11071); script_version("$Revision: 1.8 $"); script_name(english:"Xedus Denial of Service"); desc["english"] = " The remote host runs Xedus Peer to Peer webserver. This version is vulnerable to a denial of service. An attacker could stop the webserver accepting requests from users by establishing multiple connections from the same host. Solution: Upgrade to the latest version. Risk factor : Low"; script_description(english:desc["english"]); script_summary(english:"Checks for denial of service in Xedus"); script_category(ACT_DENIAL); script_copyright(english:"This script is Copyright (C) 2004 David Maciejak"); script_dependencies("xedus_detect.nasl"); script_family(english:"Peer-To-Peer File Sharing"); script_require_ports("Services/www", 4274); exit(0); } include("http_func.inc"); if ( safe_checks() ) exit(0); port = get_http_port(default:4274); if ( ! get_kb_item("xedus/" + port + "/running")) exit(0); if(get_port_state(port)) { soc = open_sock_tcp(port); if (! soc) return(0); s[0] = soc; for (i = 1; i < 50; i = i+1) { soc = open_sock_tcp(port); if (! soc) { security_hole(port); for (j = 0; j < i; j=j+1) close(s[j]); } sleep(1); s[i] = soc; } for (j = 0; j < i; j=j+1) close(s[j]); } exit(0);