Dahua Says Latest Firmware Check Does Not Work With Out-of-Date Firmware
The tool that Dahua claims will alert users if Dahua's firmware is out-of-date does not work if the firmware is actually out-of-date, per a declaration that Dahua provided to IPVM after we reported on Dahua's newest critical vulnerabilities and the fact that their firmware checker did not work on out-of-date firmware we tested.
Inside this note, we share Dahua's explanation, our test findings, and why this increases risks for Dahua users already beset by vulnerability after vulnerability.
Feature *******
** ******** ******** *************** ******, ** ********* **** ***** **** Dahua ******* ******* ** "****** *******" which ****** *** *** ********, ** have ***** **** **** ******* ***** fails, *.*., ** *** ******* **** firmware ***** "****** *******" **** ***** the ****** *******, ******* **** ******** being *********.
**** ***** (** *** *****) ** simply *****. ** ** ******* *** the ****** *******. **** ********** ********* would ********* **** ** * *** and *********** *** **. *** *****.
"Consistently ******** **** ***** ******** ********"
***** ***** **** ** ** *********** user ***** *** **** ** ** because ** **** *** "**** ************ applying **** ***** ******** ********":
Questions **********
***** *** *** ******* ** *** follow-up *********:
********: **** ****** ******* ***** *********** ("It ** *** ****** *******") **** the **** ** *** "************ ******** past ***** ******** ********'? *** ***** it *** **** *** **** *** firmware ** *** ** ****?
*******'* ** ** ****** ** **** case *** *** ******** ***** ** know **** **** ******** ** *** of **** *** ********* **** *** user ** ** *** *** ****** version?
* ********** ***** ** ***** ****** a ******* ******** *** *** ********* to ******:
** **** ** ****** ******* ** this ******* *** ******** **** ***** firmware ******* **** *** **** ** older ******** ******** ***** ** *****. As *** ***** ** ******** *****, Dahua ******** *** ***** **** *** from **** *** ******** **** "** is *** ****** *******."
Comparison ** ***** ******** ********
******* ***** ************* ***** ****** ******** checks ******* ** *****, **** ***** results ** *** *******. *********'* *** Uniview's ****** ****** ****** *********, ********* the ****** ******* **** **** ******** was ***** ***-**-**** **** ******. ** contrast ** ***** ****** ******, ***** has ******* ****** ****** ** ***** IP ******* *** *****, ***** *** consistently ********* ******** ******** ******* **** when **** **** ************* ***-**-**** ********.
Dahua ***** ******
***** *****'* ******* ******** *************** *** clearly *** ******* ***** **** *** company *****, *** **** **** ** would ****** ***** ***** **** *** its ******** ****** ******** ****** ******* reinforces *** ****** ** ***** *****.
** **** ***** ***** **** *** will ****** **** ****** ** ** when ***** **** ** **.
***** ****’** ****** **** **’* ***** in *** *** ******** **** *** wouldn’t **** ******?
****, *'* ******* **** ****** *) version *.*** *** * ****** ****** checker **** *** ***** ** * later *******, ** *) *****'* ****** server ************** *** ******** ** **** point, ***** ***** *** ****** ******* in ***** ********. *****'* *** **** that ***** ** **** ***** **** a, ***** **** ********* ****** ** the ******* *** ******** **** ** update ********. *** **** *, ***'* really **** **** ** ******** ********* compatibility ** ***** ********** **** ****.
**** ********** ** ***** *** ******** tech ******* ** *** *******. ***** should **** ****** ************ *** *******, explained **** ***** ******** *** ** issue **** ***** **** ** ****** the ******* ******** ****** ******** ******* had **** **** ******** ** ********, sent ** ****** *** **** ***** restore *** ****** ** ****** ********* and ***** *** ****** ****** ******* to **** ** ** ****** ***** forward. ******* ******.
*** ****** ******* ** ****: *****, it *** **** *** ********** **** all ******** ********, *********, *** ********, that ** * ******* ******** ******** update ******** ********* ******* *** ******* version, **** ********* *** ******** ** with *** **** ****** ******* ******** or *************. ******* ******. ** ******** uses ** ******** * ****** ** incremental ******* ** ***** ** **** properly, **** ** *** ** ********* detect *** **** *********** ****/******* ***** to ******* **** *** **** *********** update. ** ** ****** ** ****, then ** *** ****** **** *********** and ******* * **** ******** *********** as ** ****** ** ****** **** happened ** *** **** **** **** not ******. ** ** *** ****** incremental ******* *** *** * **** practice, **** ** **** ******* **** time ** ******** *** *********. ***** incremental ******* ***** ******** ******** ** be ******* ** * ****** *******, historically ** ** *** ******* *** new ******* ** ********* ********* ********/****** that *** *** ***** ******.
***** *** ******* ******** ** * product ** ** ********* ** **** it ** ******** ** **, * good ****** *** *********** ***** ** to *** *** **** *** *** versions ** ****** ********* *** ****** operation, ***** ** ******* ** *** to * ******** **** ***** ******* are ********* ******* ******* ********. ** an ****** **** ****** *** ******, it *** ** ********** ****** *** customers ** *** **** ****, ******** a ******* *********. ** *** ****** is ******** *******, **** ************ ****** be **** ** **********/******* ** *** user ** ******** ** ** ********* that *** ****** ** *******, ** they *** ****** *** **** ******** individually *** **** ****** ** **************.
****** **** ** **** ** **** for ******** *******, **** ** ******** and ********* ** *** ***** ********* updating ** **** *****, *** ******* firmware ** ******* ************ ***** ******** a **** ****** ******* ** *********** approach. *** * ****** ** ** automatic ******* ******** ** ** ‘***** in’ **** * ****** ********* ** download *** ****** ********. **** *** it’s *** ******** ***** ** ****** update ******* *** ** ******* ******** updates ** ** ********** **** *** wrong ******, *** ******* ** ******, download ******* ** ***** ******* ********. This ****** *** **** **** ** the **** ** ************ ***** ******** to *********** *** **** **** ********.
*** ‘***** **’ ******* ** **** one ** *** **** ******* ******* have ***** ** ** *** ***** in *** **** *** *****. ** enabling **, ******* *** ******* ** reach *** *** ***** ******* **** once ********* *** ** **** ** do ****** ***** **** ****** ********. For *******, ******* ****** ******, ******* status, *********** ***** ******* ** *******, and/or ******* ********** **** ** *******. It ***** * **** **** ***** be ********* ***** ** *** *********** managing *** ****** **** *** **********. IT ***** * **** ** ******** network ** ***** **** ****** ****. Generally **** ******** **** *** ** detected ******* ******** ********** ******** ******* on ******* ********** *** *******. ********* and ***** ******** ********** ******* **** many **** ** ******* ******* ***** products, *** ******** ***** ***** ******* tend ** ******* ** ***** ***, and ***** ********* ***** **** *** ones ******** *** ***** ****** *******, are ********* ** ******.
** *** ****** *** ** ******** might **** ** ** ****** ***** auto ******* ** ** ******* ** embedded ******** ** **** ** *** allowing *** ***** ******** ** ** installed ** ***** **** ** **** networks. ******* ***** ******* ****** *** entirely ** ***** *** *******, **** their *** ******** ******** ******* ** portal, **** ** *** ** ********* thing ** **, *** ******** ***** isolation ** *********** ***** ********.
************* ******* ******* **** ***** *********. They **** ** **** ** ******* and ************* **** **** ** ****** proper ********* *** ******* ******** ** all *********. ** **** **** ***’* of ************* ******** **** **** ***** and ** ***** ***** ** *** one **** *** *** ** **** time *** ****** **** ***** ******** or ********. ** *******.
*** **** ** ***** *** *** the **** *** **** ****** **** open *** ********** **** ******, *** quick ** ******* ****. **** ****** us ** ** *** **** *** our *******.
** * ************ ** *** ***** honest, ** ****** ******* ******* ** acknowledging ******** *** ********* *********, ** have ** **** ***** ****. ********* it *** **** ********* ***/** **** inconvenient ** **, *** ** **** it ** *** ***** ***** ** do *** *** ******* *** *** peace ** ****.
*** ****** **** *** ****** **** else *** **** *** ***** ****** about?
***! **'* **** ****** ***** *** one *** ** ******** ***** ******. Nothing *** ** *** ****.
****: * ******* **** **** **** kicking *** *** ** ** *** will ******** **** *** ******** *******. They **** ****** *** ******** ***** location **** **** **** ** ** one ************ ****** *** **** ** to *** ****. ****'* *** ******** beyond * *** ******. **** ***** to * ****** ********** ******** ******* location. **** *** ****** ****** ** them ****** "**'** **** **** ** it **** ****, ** *******". ** far, ** *** ******* **** **** issued **** *** ** ******** *** upgraded ** ***** ******** ** *** new ********.
**'* **** ** *** ****.
*** **** ********* ** **** ****-******* feature ** **** *********** ***** ******** firmware ************ ****** ***** ** ********* only ******** **** ******* ** **** who *** ***** ********* ********. *** upgrade ******* ***** **** ** ** stripped *** ** ******** ** ***** logo **** ***** "*******" ******** ***** for **** ** **** ***** ** they ******** **** ** ******* ***** OEMs ** *** ******* ******* **** firmware ***** *******.
*** ********* ******** ********?