CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
AI Score
Confidence
High
EPSS
Percentile
70.5%
Neon is prone to certificate spoofing and denial of service (DoS) vulnerabilities.
# Copyright (C) 2009 Greenbone Networks GmbH
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.900828");
script_version("2022-05-09T13:48:18+0000");
script_tag(name:"last_modification", value:"2022-05-09 13:48:18 +0000 (Mon, 09 May 2022)");
script_tag(name:"creation_date", value:"2009-08-27 13:43:20 +0200 (Thu, 27 Aug 2009)");
script_tag(name:"cvss_base", value:"5.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:N");
script_cve_id("CVE-2009-2473", "CVE-2009-2474");
script_name("Neon Certificate Spoofing / DoS Vulnerability");
script_xref(name:"URL", value:"http://secunia.com/advisories/36371");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/36079");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/36080");
script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/52633");
script_xref(name:"URL", value:"http://www.vupen.com/english/advisories/2009/2341");
script_tag(name:"qod_type", value:"executable_version_unreliable");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2009 Greenbone Networks GmbH");
script_family("Denial of Service");
script_dependencies("secpod_neon_detect.nasl");
script_mandatory_keys("WebDAV/Neon/Ver");
script_tag(name:"impact", value:"Attacker may leverage this issue to conduct man-in-the-middle attacks to
spoof arbitrary SSL servers, and can deny the service by memory or CPU
consumption on the affected application.");
script_tag(name:"affected", value:"WebDAV, Neon version prior to 0.28.6 on Linux.");
script_tag(name:"insight", value:"- When OpenSSL is used, neon does not properly handle a '&qt?&qt' character
in a domain name in the 'subject&qts' Common Name (CN) field of an X.509
certificate via a crafted certificate issued by a legitimate Certification Authority.
- When expat is used, neon does not properly detect recursion during entity
expansion via a crafted XML document containing a large number of nested entity references.");
script_tag(name:"solution", value:"Upgrade to version 0.28.6 or later.");
script_tag(name:"summary", value:"Neon is prone to certificate spoofing and denial of service (DoS) vulnerabilities.");
script_tag(name:"solution_type", value:"VendorFix");
exit(0);
}
include("version_func.inc");
neonVer = get_kb_item("WebDAV/Neon/Ver");
if(!neonVer)
exit(0);
if(version_is_less(version:neonVer, test_version:"0.28.6")){
report = report_fixed_ver(installed_version:neonVer, fixed_version:"0.28.6");
security_message(port: 0, data: report);
}