OpenSSL is prone to security-bypass vulnerability.
###############################################################################
# OpenVAS Vulnerability Test
#
# SSL/TLS: OpenSSL CCS Man in the Middle Security Bypass Vulnerability
#
# Authors:
# Michael Meyer <[email protected]>
#
# Copyright:
# Copyright (C) 2014 Greenbone Networks GmbH
#
# 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("1.3.6.1.4.1.25623.1.0.105042");
script_version("2020-03-31T06:57:15+0000");
script_bugtraq_id(67899);
script_cve_id("CVE-2014-0224");
script_name("SSL/TLS: OpenSSL CCS Man in the Middle Security Bypass Vulnerability");
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_tag(name:"last_modification", value:"2020-03-31 06:57:15 +0000 (Tue, 31 Mar 2020)");
script_tag(name:"creation_date", value:"2014-06-10 17:18:54 +0200 (Tue, 10 Jun 2014)");
script_category(ACT_ATTACK);
script_family("SSL and TLS");
script_copyright("Copyright (C) 2014 Greenbone Networks GmbH");
script_dependencies("gb_tls_version_get.nasl");
script_mandatory_keys("ssl_tls/port");
script_xref(name:"URL", value:"https://www.openssl.org/news/secadv/20140605.txt");
script_xref(name:"URL", value:"http://www.securityfocus.com/bid/67899");
script_tag(name:"impact", value:"Successfully exploiting this issue may allow attackers to obtain
sensitive information by conducting a man-in-the-middle attack. This may lead to other attacks.");
script_tag(name:"vuldetect", value:"Send two SSL ChangeCipherSpec request and check the response.");
script_tag(name:"insight", value:"OpenSSL does not properly restrict processing of ChangeCipherSpec
messages, which allows man-in-the-middle attackers to trigger use of a zero-length master key in
certain OpenSSL-to-OpenSSL communications, and consequently hijack sessions or obtain sensitive
information, via a crafted TLS handshake, aka the 'CCS Injection' vulnerability.");
script_tag(name:"solution", value:"Updates are available. Please see the references for more information.");
script_tag(name:"summary", value:"OpenSSL is prone to security-bypass vulnerability.");
script_tag(name:"affected", value:"OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m and 1.0.1 before 1.0.1h.");
script_tag(name:"qod_type", value:"remote_analysis");
script_tag(name:"solution_type", value:"VendorFix");
exit(0);
}
include("mysql.inc"); # For recv_mysql_server_handshake() in open_ssl_socket()
include("byte_func.inc");
include("ssl_funcs.inc");
include("misc_func.inc");
function _test( v, port ) {
local_var v, port, soc, hello, data, record, hello_done, req;
if( ! v ) return FALSE;
soc = open_ssl_socket( port:port );
if( ! soc ) return FALSE;
hello = ssl_hello( version:v );
if( ! hello ) {
close( soc );
return FALSE;
}
send( socket:soc, data:hello );
while( ! hello_done ) {
data = ssl_recv( socket:soc );
if( ! data ) {
close( soc );
return FALSE;
}
record = search_ssl_record( data:data, search:make_array( "content_typ", SSLv3_ALERT ) );
if( record ) {
close( soc );
return FALSE;
}
record = search_ssl_record( data:data, search:make_array( "handshake_typ", SSLv3_SERVER_HELLO_DONE ) );
if( record ) {
hello_done = TRUE;
v = record["version"];
break;
}
}
if( ! hello_done ) {
close( soc );
return FALSE;
}
req = raw_string( 0x14 ) + v + raw_string( 0x00, 0x01, 0x01 );
send( socket:soc, data:req );
data = ssl_recv( socket:soc );
if( ! data && socket_get_error( soc ) == ECONNRESET ) {
close( soc );
return FALSE;
}
if( data ) {
record = search_ssl_record( data:data, search:make_array( "content_typ", SSLv3_ALERT ) );
if( record ) {
close( soc );
return FALSE;
}
}
send( socket:soc, data:req );
data = ssl_recv( socket:soc );
close( soc );
if( ! data ) return FALSE;
record = search_ssl_record( data:data, search:make_array( "content_typ", SSLv3_ALERT ) );
if( record ) {
if( record['level'] == SSLv3_ALERT_FATAL && ( record['description'] == SSLv3_ALERT_BAD_RECORD_MAC || record['description'] == SSLv3_ALERT_DECRYPTION_FAILED ) ) {
security_message( port:port );
exit( 0 );
}
}
}
if( ! port = tls_ssl_get_port() )
exit( 0 );
if( ! versions = get_supported_tls_versions( port:port, min:SSL_v3, max:TLS_12 ) )
exit( 0 );
foreach version( versions ) {
_test( v:version, port:port );
}
exit( 99 );