This host is running OpenSSL and is prone
to a denial of service vulnerability.
###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_openssl_death_alert_dos_vulnerability_lin.nasl 13898 2019-02-27 08:37:43Z cfischer $
#
# OpenSSL Death Alert Denial of Service Vulnerability (Linux)
#
# Authors:
# Shakeel <[email protected]>
#
# Copyright:
# Copyright (C) 2017 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# 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.
###############################################################################
CPE = "cpe:/a:openssl:openssl";
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.809778");
script_version("$Revision: 13898 $");
script_cve_id("CVE-2016-8610");
script_bugtraq_id(93841);
script_tag(name:"cvss_base", value:"5.0");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_tag(name:"last_modification", value:"$Date: 2019-02-27 09:37:43 +0100 (Wed, 27 Feb 2019) $");
script_tag(name:"creation_date", value:"2017-01-16 15:58:38 +0530 (Mon, 16 Jan 2017)");
script_tag(name:"qod_type", value:"remote_banner_unreliable");
script_name("OpenSSL Death Alert Denial of Service Vulnerability (Linux)");
script_tag(name:"summary", value:"This host is running OpenSSL and is prone
to a denial of service vulnerability.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on the target host.");
script_tag(name:"insight", value:"The flaw is due to an error in function
'ssl3_read_bytes' in ssl/s3_pkt.c script which might lead to higher CPU usage
due to improper handling of warning packets.");
script_tag(name:"impact", value:"Successful exploitation will allow a remote
attacker to conduct a denial of service condition.");
script_tag(name:"affected", value:"OpenSSL versions 1.1.0, 1.0.2 through 1.0.2h,
all 1.0.1 and all 0.9.8 on Linux");
script_tag(name:"solution", value:"Upgrade to OpenSSL version 1.0.2j or 1.1.0b
or later.");
script_tag(name:"solution_type", value:"VendorFix");
script_xref(name:"URL", value:"http://seclists.org/oss-sec/2016/q4/224");
script_xref(name:"URL", value:"https://git.openssl.org/gitweb/?p=openssl.git;a=commit;h=af58be768ebb690f78530f796e92b8ae5c9a4401");
script_xref(name:"URL", value:"https://securingtomorrow.mcafee.com/mcafee-labs/ssl-death-alert-cve-2016-8610-can-cause-denial-of-service-to-openssl-servers");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2017 Greenbone Networks GmbH");
script_family("Denial of Service");
script_dependencies("gb_openssl_detect.nasl", "gb_openssl_detect_lin.nasl", "os_detection.nasl");
script_mandatory_keys("openssl/detected", "Host/runs_unixoide");
exit(0);
}
include("host_details.inc");
include("version_func.inc");
if(isnull(port = get_app_port(cpe:CPE)))
exit(0);
if(!infos = get_app_version_and_location(cpe:CPE, port:port, exit_no_version:TRUE))
exit(0);
vers = infos['version'];
path = infos['location'];
if(vers =~ "^(0\.9\.8)" || vers =~ "^(1\.0\.1)")
{
VULN = TRUE;
fix = "1.1.0b or 1.0.2j";
}
else if(vers =~ "^1\.0\.2")
{
if(version_is_less(version:vers, test_version:"1.0.2j"))
{
fix = "1.0.2j";
VULN = TRUE;
}
}
else if(vers =~ "^1\.1\.0")
{
if(version_is_less(version:vers, test_version:"1.1.0b"))
{
fix = "1.1.0b";
VULN = TRUE;
}
}
if(VULN)
{
report = report_fixed_ver(installed_version:vers, fixed_version:fix, install_path:path);
security_message(port:port, data:report);
exit(0);
}
exit(99);