![telia technicolor router telia technicolor router](https://www.192-168-0-1login.org/9675-technicolor_tg799vn_v2_telia-router-default-login.jpg)
- #TELIA TECHNICOLOR ROUTER FULL#
- #TELIA TECHNICOLOR ROUTER CODE#
- #TELIA TECHNICOLOR ROUTER PASSWORD#
- #TELIA TECHNICOLOR ROUTER TV#
- #TELIA TECHNICOLOR ROUTER WINDOWS#
#TELIA TECHNICOLOR ROUTER WINDOWS#
As Lithuanian law prohibits exploit testing on the real server, we could only fingerprint the Windows OS, but nothing more. It may require more time, longer and more sophisticated fuzzing and more knowledge about the server. However, at the time of the report we couldn't find an easy way to exploit the stack corruption. Same php file was executed twice, but the malicious SSH server sent different payloads which caused: Here is a sample GIF video that demonstrates two kinds of the issues the fuzzer found for us. In the first few days of the fuzzing we got some crashes and partially confirmed that RCE may be exploited. With this server we could fully control the protocol and start fuzzing. And finally we got a malicious SSH server and a test libssh2 client running in our test lab. Step by step we have gone through the sequence of Telia's commands sent over the SSH. In order to exploit RCE we needed to build a virtual test environment that fully copies Telia's PHP client. Using malicious SSH server to trigger server side RCE
#TELIA TECHNICOLOR ROUTER FULL#
The newer models like Technicolor require some additional exploits chained to gain full root access, but all are publicly available and so - easily doable. Using one of them we were able to escalate to root and got full access over the device. This gave us a lot of additional information that was hidden inside the router, many more vulnerabilities. You can do some restricted stuff now, great! But what about the root shell? We were able to connect with those credentials locally and got a limited shell. As soon as Telia's client connected to our malicious SSH server we got the universal router credentials: User: tadminĭo you still own an ADB router? Just go ahead and login over the web interface with this user.
#TELIA TECHNICOLOR ROUTER PASSWORD#
This means that we can see the password used and could try to create a malicious SSH server that exploits public vulnerabilities on Telia's side. We were able to start a custom SSH server on the same port 8022 and Savitarna successfully established a connection without even trying to verify for a man-in-the-middle. The client does not verify remote SSH server public keyĪnd, yes, it turns out that Telia's client does not attempt to verify the remote server's public key. Weak and deprecated key exchange diffie-hellman-group1-sha1 Network capture shows an SSH client banner and the remote IP that initiated the connection: Let's take a look at how the SSH connection is established. , keep it in mind and do not reuse this password anywhere. Telia knows your WIFI password in plain text After a successful login a PHP script on the backend will issue some commands in the router's shell, parse the result and output some of the data to the user in the web UI, like wireless network name. Depending on the router it will be either password authentication or RSA public key. When a user wants to change the password, the web service calls the backend to initiate an SSH connection to the user's associated router. Sounds interesting, right? An internet web service that is able to change your local router's wifi password. One of the new features: changing your router's wifi password. It uses password authentication or external authority logins such as Facebook, Google, banking, digital signature etc. That allows Telia customers to order and manage services, get invoices, pay bills etc. Savitarna (in Lithuanian "Self service") - is a web service , have password login disabled and only use ssh with public key authentication (spoiler: it is still vulnerable). The recent newer models, like Technicolor
#TELIA TECHNICOLOR ROUTER TV#
What is Telia backdoorĮvery Telia router or tv box has a backdoor or "management interface". Telia rents and sells custom routers and set-top tv boxes to customers which have limited or almost no administration access left to them. It also operates in Lithuania and provides mobile service, FTTH internet, DSL internet and IPTV. Telia is a Swedish multinational telecommunications company.
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![telia technicolor router telia technicolor router](https://www.datorkirurgen.se/wp-content/uploads/2016/05/Tele-2-ZTE-Router.jpg)
#TELIA TECHNICOLOR ROUTER CODE#
Multiple vulnerabilities could allow running arbitrary code on an intranet server and gain root access on all the customers' routers Who is Telia