Uniview Recorder Backdoor Examined

Author: Brian Karas, Published on Oct 20, 2017

A Chinese research group has identified a vulnerability in Uniview recorders that allows backdoor access in a method similar to the Dahua backdoor.

IPVM spoke with the researcher behind the discovery and Uniview to determine the severity and impact of this discovery.

In this report we share Uniview's response and our analysis.

* ******* ******** ***** *** ********** * ************* ** ******* recorders **** ****** ******** ****** ** * ****** ******* ** the***** ********.

**** ***** **** *** ********** ****** *** ********* *** ******* to ********* *** ******** *** ****** ** **** *********.

** **** ****** ** ***** *******'* ******** *** *** ********.

[***************]

Samsung ************* ****** / ******** ******* ***

*** *** ****** *****,***-****-*****, ********* **** ************* *** *******, *** *******. **** *** verified **** *** ************* ** ** ******* ********* *** **** Samsung / ****** *** ****** * ******* ****** ** ******* recorders ****** *****. *** *********** *** ****** * ******* ***** model *** **** *** ***** ** *** **** ** *** report ** *** ************ ******* ******* *** *******.

* ********** ** ******** ***-****(***) *** *** *******-******* **** **** *** *** ******** (******) show *** ******** ************ ******* *** *****:

Vulnerability ********

*** ************* ******** * ******* ** ********** * *** **** the ******** ***** ******** * **** ** *** ***** ********. This **** *** **** ** **** ** ********** *** *** login, ******* *** ***-********* **** **** ** *** **** ******* of ******* ** * ****-******** ********. ***** ** ****** * user ** ***** ** *** ***** *** ********* **** ***** privileges, *** ******* *** ******** ********* ** *** ***** ****.

Researcher ********

*** ******* ****** *** *********, "******* ******** *******" ********* **** after ********* ****** *** ***, ******* **** **** * ******** research ************ ***** ** *******. **** ** *** **** * website, *** **** ********** ** *****, ********* ********** *******, **** as ***** # *** ******** ** *** **** ******, *** Skype.

** **** *** **** ******** *** ********** ********* ******* / Hanwha ****** **********. ********* *********** ******* ************* ** ********* ************* to ******** ******* ** **** ** *** ********** *******.

Models ********

****** **** **** *** ************* ******* ** ***** ********* *** not ** *******. *** ******* *** *** ******* ******** ****** or ******** ******** ********, *** **** **** **** ******* **** information **** ******* ******** ** *********, ********* ******** *** ******* 31st ****.

**** ******* ** ******** ********* ***** (*** ******) ****** *** vulnerability ******** *** ******* ********* ******.

****** (*** *** ****** *******) ****** *** ********* *****-**** ****** are ********:

  • ***-****
  • ***-****
  • ***-*****

Ease ** ******* - *******

********** **** ************* **** ******** ********** *** ***** ******** **** with *** ***, *** **** ******* **** **** **** ******* URL ** ***** ** *** **** ** *****. **** *** be **** ** *** *****:

  1. *** *** ***** ******** **** ***** **** ***: ****://**.***.**.**:****/***-***/****-***?****={"***":***,"**************":"*****","**********":"","******************":*} (**** for "*************", *** ****** ** ********** ***** ** *** ***** password ****)
  2. *** ** ** ***** ** * ******* ******** ***** **** URL: ****://**.***.**.**:****/***-***/****-***?****=*&**********=*****&************=***********************

*******, **** ************* ** **** **** ** ******* *** **** not ******* *** ******** *********** ** ********* *********.

Minimal ******-****** *******

******* **** *** ******* ******** **************** **** *** ******* ******, **** *** ******** ** **** being ** *** **:

Uniview ****, *** ********

[*******]

******* *** ***** ********* ******* ******** *** **** *************. ********* to *** *******, *** ******* *** ** *****/******* ** ** use *** ********'* *****-** ***** ******* *****. **** *****->*********** ***** should ** * "*****" ****** ** ***** *** *** ********:

******** *** "*****" ****** **** ***** *** ******** ** ***** for ******* ******** *** ******* *** ****** ** *******:

******* ******** *** ********* **** *** ********** **** *************:

*.******* **** ******* * *** ******** ****** ** ***** *** issue ** *** ******* ****. *** ****** ******* **** ** ********.

*.******* **** ******* *** ***** ******** *** ******* ******** ** Nov. ****.

*.******* **** ******* * *** ******** ** *** ** ******** which **** *** * ******* *** *** ****** *** ***** security ************** *** **** ***** ******** ****.

*** *** ****** **** *** ******* ** ******** **** *** impacted ** **** *************, ** **** ******* ** ******** ********* simultaneously **** ** ******* *** *** ********.

** ** *** ******* ******* *** ******** ** **** ************* before ** ********* ****, *** **** **** ********** ** ** once **** ***** ** *** *****.

OEM *****

**** ************* ***** ******* ******* ** *** ***** ********** **** relying ** *** *************. ******* ****** ****** ** ******* ** a *** ** **** ***** ** *** ******* ***** ***** units **** ****, *** **** **** ****** ** ***** ***** due ** *** *************. *******, ***** ********** **** ********** **** may **** *** *** *******. ******* **** ***** ******** **** affected ********* ******* **** *** *** *** ** '*********' ******* product, *** **** ******* ** ****** ******* ** ******* ** resolve **** *****.

***** ** *******'* ******* ******** *** ******** *******, ** ** clear **** *******'* ******* ******* ** ****** ***** *** ***** before ********** **** *** *** *** ********. ******* ************** *** been **** ********** **** ***** *** ********* **** **** *** similar *************** ** *******, ******* **** *** ********* *** ***** 2nd ******** **** *** *** **** ***** ******* ***** ***** own ***** ** *** **** *******.

Comments (36)

**** ******* ** ******** ********* ***** (*** ******) ****** *** vulnerability ******** *** ******* ********* ******.

** * ****** ********** ** ******* ********, **** ** ** great *******. **** * **** **** *******, * *** ** operations ******* ** **** ** *** **** ********** *** **** tests ** *** ** *** ******* ******* ********* **** ** sell **** **********. ** **** *** **** **** ** ********* this *************. *** * ****** **** *** **** ****** ********** are *** **** *** *******?

**** -

**** *** *** ** *** * ****? **** *** *** you ***** *** ********* **, **** ********?

******* ********** ********* **** ******* **** **** **** *** ******* OEMs, *** ** ****** ** *** ******, *** *** ******* specific ****** ********.

** *** *** ***** **** ****/********** ******* *** *****/******** ** might **** ****** ** *********** ***** ***** *** ********** ** not.

* **** ****** * *** ***** ** *** **** *** Shodan ****** *** *** * ***** **** ** *** ***** units ***** ******* ** *** ******* ******* **** ******** ** read *** ****** ********, **:

****://**.***.**.**:****/***-***/****-***?****={"***":***,"**************":"*****","**********":"","******************":*}

******* **** **** ** *** **** **** ** *** ************* (if *** ****** *** *** ****** ******** **** *** ****, you ****** ******* ** **** **** ******).

*** *** *** ** *** *** * ***** **** ** a ******** * *** **** ** ******* * ******** **** from - ****** *****:

***-***-**:********* ***$ ./*******.**
*******...
***** ********:
"*************": "********************************"
*******...
***** ********:
"*************": "********************************"
*******...
***** *** *** ******** ****.
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***** ********:
"*************": "********************************"
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***** ********:
"*************": "********************************"
*******...
***** ********:
"*************": "********************************"
*******...
***** ********:
"*************": "********************************"
*******...
***** ********:
"*************": "********************************"
*******...
***** ********:
"*************": "********************************"
*******...
***** ********:
"*************": "********************************"
*******...
***** ********:
"*************": "********************************"
*******...
***** ********:
"*************": "********************************"

* ***** ** ******* **** **** ***** # *** ******** build *** ** *** ****** *** *** ******** **** **** from *** ******.

** **** **** ** ***** ******* **** *** ***** ***** right *** ** ******* *** ***** *** ****** ******. * will *** **** **** ***.

***** ********:
"*************": "********************************"

** *** *** * ****, ****** **, ** ***** *** websites ********** ******* ****** ****** *** ****** ** ****** ********* with ********* ******* **********. *** ********, ******** "********************************" **** *****'* **** *****, **** **** *** "******" (****** using ***) ***** ** ******** *** **** ********.

** ** ***** **** **** *** **** ******* *** ****** of *** ********. **** ****** ** ***** ****** ****** ** a *******.

***, **** *****. * ******* ******* **** ***** ******* ****** to *** *** **** ***** *** ****** ******* **** ******* with **** ************* *** ******* ** **** ** **** *****. But ** *** **** *** * **** ******** **** ******* even **** ****/**** ** *******.

******, **'* **** * **** ** ********** **** **** ** the ****** *******. **'* *** ****** * *** ********* ********* for ***** *******, ******* *** ****** * ****** ***** *** company ** ***** *** ********* *********. ********* *** ******* **** hacked *** **** **** **** *********** *** **********.

*'** ***** ******* ** ***** ******** ***** ****** *** ** will *** ****.

*** *** ***** ** ** **: ******@****.***

***** ** *** *** ********

**** ******* ** ******** ********* ***** (*** ******) ****** *** vulnerability ******** *** ******* ********* ******.

**** *** *** ****?

** ***** * **** ** ***** ******* ****?

***********, **** *** **-******.

**** ** * **** ** *******'* ******* ***** ***** *** are ***** ****** *********** ** *******. ** ** *** *** at **** ****, ** **** **** ******* ******* ********. *** question *** *** ***** *** *******:

****://**.*******.***/********/*******/********/*************/

*** **** *********** **** ** *** ***** ******* ** **** 'szUserName' ** ****, *** *** ******* ** ***** *** "*****".

****://**.***.**.**:****/***-***/****-***?****={"***":***,"**************":"*****","**********":"","******************":*}

* ****** *** '****' **** *** **** **** *** ************** mechanism ** '*******' *** **** ** **** ** **** *** sensitive **** **** ***** **********...

*** **** ** ** ** **** ***** **** *****? ** if *** *** * **********, *** **** ** ** ** know **** ** * ****? *** *********** ** ****?

****'* *** *****. ** ***-******** *** * ******** ****. **** in * ***** ** **** ** ****** ****** ** *** their **** ***** **** *******. **** * **** ** ******** Dale *** ******, * **** **** * **** ** ***. When ** ******** ***** **** ******, * ****** ****, ***** all *** ***** ** ** ***, **** *** *****, *** ensure ** ******* *** *******.

* **** ***'* ******* *** * *** ******* ******* ***** have ***** ******.

** ** *** *** * **********, *** **** ** ** to **** **** ** * ****? *** *********** ** ****?

** ** **********, ** ** ****** *********** ** *****, *** partly **********.

** **** ***** * ********* ***** ** ***** **** ** required ** ***** ****** ****, *.*. ******* * **** **** as**** ***. ** **** ***'* **** *** ****** ** ****** ***** own *********, **** ****** ******** ***. ** *** ********, *** insecure **** * ********* ****** ** ****** ** ** ******** to *** ******** *.*. ******* *********** ***'* **** ** **, that's *** ****, ** ** * *********** **** ** ******* skill **** **** ***'* ****.

** *** **** * ********* ***** ** **** * ******* resistant ** ******* ****** ***** ******* **** ** ********** **** any ******* ********. ** ** **** ********, ** *** **** like **** *** *** ******* *** **** **** ****** **** time. ** **** **** ******, **** **** ** **** ** features **** ***** ******, ********, *** ***** *** ******** *** and *****. ********, ******** *** ***** ******** **** ***** ******, CEOs *** *** ** ** ***** ******** **** **** ****** priority ** ***** ** ******** **** *** ** ****** ** bullet ****** ** ********* *********.

** ** *** *** * ******** ******* ***** ******** ** important, *** **** ** *** ******* ** * ************* *********, or **** *** ******* ***** ***** *** ******* *** ***** with ** ** * ********** *****.

* ****** *****, *** ** **** ******* ***** *** ******* / **** ******* *** ********** *** **** ****** ******* ********* on * ******* *****.

** * ******* ** *** *********** ** ********** ** ******* until ** ** **********

*** **** ** ** ** **** ***** **** *****?

*** ** ****, *** **** **** ** ***** **** **** reading *** *** ** ********** *** ****

** ** *** *** * **********, *** **** ** ** to **** **** ** * ****?

*****, ********* *** *** ******* - ***** *** ** *****, this ** *** *** **** ** ******* *** *** *** portable ** ** '*****'

*** *********** ** ****?

******** *** ****** *** *** *********** *** *** ** ** there

* **** ***'* ******* *** * *** ******* ******* ***** have ***** ******.

*************, * ***** *** **** **** ** *** **** ** this *** * *****....

**** *** *** * *** **** ******** *** (** *'* curios), *** * ******** ***'* ***** ******* **'* * ********, it's ***** **** **** - **** **** ********** ** ******** whatsoever.

*** ** ***** *** **** ****** **** '******()', *** ** sanitation ********** ** **** ******** *****, ***** ***** **** ****** code ********* (***) **** **** *********.

* ******* ***** *** ********, *** ******* ****** **** ** absolutely ******.

* ******* ***** *** ********, *** ******* ****** **** ** absolutely ******.

*** **** *** ** ******** ************...

******** **** ******** ** ***, ******** * **** ***** ** who ****** ***.

*** ***** **** **, ** *** ** **** *****? (********** I ******* ***** ****** ** ****)

***** ****'* ****** *** ***** ****, ** ***.

****:

***** *** **** *** *** **** **** **** ********:*****://******.***/*****/***-*********-***

******** **** ******** ** ***, ******** * **** ***** ** who ****** ***.

*********, ***** "******" ******** ;)

* ******* ***** *** ********, *** ******* ****** **** ** absolutely ******.

* ******* *****'* ***** * *** ** ****** *** *****. About * **** ***, * *********** * ****** **** ********** ignored *** ******** *** ******** **** ********** *** ****. * told **** ***** *** *******, **** ****** **, * ********* and **** ********** ****** ** *** **. **** ****'* ****** overly ********* ***** *** ******* ** ***.

** *** ***, *** ******** *** **** ******** **** ** both *** ******* ******** *********** *** **** ****** ********, *** reached *** ** *** ******* ******** ********** ** ***** ******. I'm **** **** *** ******* *****, *** *** **** **** in **** **** ***** *** ****.

*** ** *** *** ***** *** ******** ** ***** **** the *** * ******* *************.

** ** ****** ***** ** ***** ***'* **** ** ** published?

***** ** ** **** ** *** ***** **** ***** *********** in ***** **** ** **** **** **** *** *** *** 3, **'* * **** *** ***** *** *** ** **** less ****** ******* ******* *** **** *** *****.

***** **** ****** ** *** ******* * ***** *******, *** has **'* *** ***** ******** ********, *** * *** *** I *** **** ***** **** * *** ** ******** ******.

**** ****** **** ********* **** **** ****** ****** **** *** PostMan ********, ***** *** ** * *** ******* ** *** are *** **** ** ******* **** **. * ***** * little **** ****** **** ***** ******, *** ******** *** *** do **** *** **** *** ******* *** *** ******* ******** fancy.

*** ***** ** ****/*******:

*) *** *** ***** ******** ****: ****://**.***.**.**:****/***-***/****-***?****={"***":***,"**************":"*****","**********":"","******************":*}

*) *** ** ** ***** ** * ******* ********: ****://**.***.**.**:****/***-***/****-***?****=*&**********=*****&************=***********************

**** ******/******. * **** ******** **** ****** ** * *** random ****** *******.

[**** ****: ****** ** * ******* *******.]

****** **** ** ****** ** ** ** ** ******** *********** on *** ** ******* ** ******* *** ** ********* ***** people's ********** ******* ******* **********???

* *** **** ******* ** **** ** ****. * **** said "****" ** ** **** ** ***** **** ** ***** it ** **** ****** *******.

[**** ****: ****** ** * ******* *******.]

**, *********** ***** *** ********** ****** *** ***.

*** *******, **** #* ******** ******* *** *** ****** ***** be **** *******, *** ********* ******* *** ************* ** *****.

**** #* ** *** *********.

**** ********** ** **** ****:****** * **** **,*** ***** *******?

**** ** ****** ** *********** *** **** *********** ** **** is ********* ** *** ******** ********* ***.

*** ******* ** **** ****** ** ** ***** ******* *** may ***, ****, *******, ** ******* ******* ********* ** ********* if ***** ******* *** ********** ** **** **** *** *** appropriately ** ***** ** ****** ****.

** *** ********* *** ************ **** ****** *** **** **** for *** **** ** ******* ********.

* ******* **** ********* ** ** ********* ******** ****, *** do *** ****** ***** **** **'* ********** *** *********** ** provide * ***-***-********* (**?) ******* ** *** ** ******* ****? While *'* **** **** ****** **** **** *** **** ** the ****** ** ***** ** *** ********, **** ******* **** it ***** **** *** ***** ***** *** ****** ***** ******* in ** ***** ****** *** ***** ********* ******* *** ******** them *** ***** ** ** **? ***** **** *** ** effectively *** **** *********** ********* ** *** ****** *** ***, you **** ***** ** ** * ****-****, ****-****** **** *** simplified ** ** **** ****** *** *** ** ****** ** seconds.

* ********** **** *******, ******* * ** *** ******* ** have ******* *** ***** ** ****** *** ***** **** ** use **** ************* (** ****** ** **** ********* ******* *** other *********) **** *** ********* **** ***** *** ******* ****** figure *** ** ***** ***. **** ** ** ********* ****** exploit, **** ** *** ***** ******* *****. *** **** *******, passing **** ******** ****** ** ** **** ****, ** ****** as ****** ** ** **** (*** **** *** **** **** complex ************'* ***** ****** ********).

*** **** **** ** **** ** **** ** *** ******* been ***** ** **** ************* **** ** ** ** *** make ** ********** ***** *** **** **** ** ***** ******** are, *** **** ******* *** ******, *** *** ************ **** expose ** ******* **** **** **** ** **** ** **** risky **** **** ****** ***. **, ****** **** ** ** and ***** "**** ***'* ****** ** **, ** ***** *** much ****** ** ****** **** ***."

[******]

******* *** ***** ********* ******* ******** *** **** *************. ********* to *** *******, *** ******* *** ** *****/******* ** ** use *** ********'* *****-** ***** ******* *****. **** *****->*********** ***** should ** * "*****" ****** ** ***** *** *** ********:

******** *** "*****" ****** **** ***** *** ******** ** ***** for ******* ******** *** ******* *** ****** ** *******:

** ******* ****** **** ******** *****?!?! *************!
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