Sign in to follow this  
dem0nx

G300 ICS USSD Vulnerability

Recommended Posts

dem0nx    1

I have no idea if there is a factory reset USSD for this however I can confirm that the USSD thing works on G300 phones (and most likely others) I am using a slightly different method of doing this instead of

<frame src=

I am using <meta http-equiv="REFRESH" content="0;url=tel:*%2306%23"></HEAD>

You can test to see if your phone is vulnerable here : http://198.100.157.97/test.html

Share this post


Link to post
Share on other sites
Hogweed    70

I see...

http://securitywatch...ours-vulnerable

Ooops.

I can confirm vulnerability on Gingerbread as well - tested with Gr2 but that's the stock dialler so likely a problem in all GB ROMs. Workaround - install another app for "tel" protocol handler. See post below.

Edited by Hogweed

Share this post


Link to post
Share on other sites
Hogweed    70

Seems it has only just been revealed in public but was discovered at least a few months ago. How serious it is depends on just what special codes the phone has. Some Android phones seem to have a "Wipe all Data" USSD code which executes immediately without asking the user for a confirm. So it is bye, bye time. Many Samsung and HTC phones seem to have been confirmed to be wipeable. Haven't tried any of the dangerous codes on my G300 to see what happens but the "safe" codes certainly work so I suspect so will any G300 specific "dangerous ones" - public or not. If anyone feels brave and has backups and deep pockets (in case you end up with a brick) then feel free to try some out. :-)

The code can be launched from any "infected" web page or by scanning QR codes with USSD telephone numbers. Could be embedded in an SMS or email as well.

Edited by Hogweed

Share this post


Link to post
Share on other sites
mack_    88

this sucks....and even if we told huawei they would probably not try to sort it out anyway.

Share this post


Link to post
Share on other sites

I hope I'm not muddying the waters, with my dullness... :unsure:

I was a bit confused last night regarding what the test actually did. I've got it now, but last night I installed exdialer just because everyone was saying its the way to fix this issue. But, after sussing this out this morning I double checked and exdialer failed (i.e. showed my my imei). So, uninstalled it and checked both dialerone and the stock dialer, both succeeded in only showing the USSD code.

So, maybe my stock dialer was ok the whole time and I didn't really test it correctly, last night?

Or, the act of installing dialerone, has done something to sort the problem (if that's possible)???

I've since uninstalled dialerone, and double checked the stock dialer, and its all good now. For what's worth I'm on the 940 repack.

Share this post


Link to post
Share on other sites
fr0do    79
I hope I'm not muddying the waters, with my dullness... :unsure:

I was a bit confused last night regarding what the test actually did. I've got it now, but last night I installed exdialer just because everyone was saying its the way to fix this issue. But, after sussing this out this morning I double checked and exdialer failed (i.e. showed my my imei). So, uninstalled it and checked both dialerone and the stock dialer, both succeeded in only showing the USSD code.

So, maybe my stock dialer was ok the whole time and I didn't really test it correctly, last night?

Or, the act of installing dialerone, has done something to sort the problem (if that's possible)???

I've since uninstalled dialerone, and double checked the stock dialer, and its all good now. For what's worth I'm on the 940 repack.

I thought the point of the alternate dialler was to intercept remote access, which installing any extra dialler seems to do... instead of the code being automatically executed, you're prompted to choose a program to run it. Which for users is a simple choice if they didn't intend to run the dialler code. Did I get that wrong then?

Share this post


Link to post
Share on other sites
tcpaulh    143

Would be helpful if someone on unmodified b892 would post a photo (not a screenshot) showing both the G300 and the effect of visiting the proof of concept url. You'll need to blank out part of your imei in any uploaded pic.

Share this post


Link to post
Share on other sites
Redflake    77

On stock B940 doing the test does not show the imei number but just displays *#06# in the dialed number area.

So dosn't look like its vunerable.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this  

MoDaCo is part of the MoDaCo.network, © Paul O'Brien 2002-2016. MoDaCo uses IntelliTxt technology.