Synopsis
A stored cross-site scripting vulnerability exists in the Web UI. A remote, authenticated attacker is able to inject malicious client-side code into the 'URL/ Host / Connection' form in the 'DATA TO SERVER' configuration section. An attacker with low privileges could exploit this to steal session details from a higher privileged user.
Proof of Concept
In the below screenshot we can see the tester has added some script tags into the 'URL/ Host / Connection' form.
“<script>alert(‘1337 hacks’)</script>
When the tester selects ‘Save & Apply’ this change you will be redirected to the list of data sensors and the injected javascript will execute.
Solution
Upgrade to TRB2_R_00.02.03 or newer.Additional References
https://wiki.teltonika-networks.com/view/TRB245_Firmware_Downloads#TRB2XX_R_00.02.03.1_.7C_2020.05.15Disclosure Timeline
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