title: Remote Code Execution in Baicells RTS Platform
description: Baicells Nova 227, Nova 233, and Nova 243 LTE TDD eNodeB and Nova 246 devices with firmware through RTS/RTD 3.6.6 are vulnerable to remote shell code exploitation via HTTP command injections. Commands are executed using pre-login execution and executed with root permissions. The following methods below have been tested and validated by a 3rd party analyst and has been confirmed exploitable special thanks to Rustam Amin for providing the steps to reproduce.
problem types: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
affected:
{
defaultStatus: unaffected
modules: 3.6.6
platforms: [RTS, RTD]
product: Nova 227
vendor: Baicells
versions:
changes: [at: 3.7.11.6, status: unaffected], lessThanOrEqual: 3.6.6, status: affected, version: 0, versionType: patch
}
{
defaultStatus: unaffected
modules: 3.6.6
platforms: [RTS, RTD]
product: Nova 233
vendor: Baicells
versions:
changes: [at: 3.7.11.6, status: unaffected], lessThanOrEqual: 3.6.6, status: affected, version: 0, versionType: patch
}
{
defaultStatus: unaffected
modules: 3.6.6
platforms: [RTS, RTD]
product: Nova 246
vendor: Baicells
versions:
changes: [at: 3.7.11.6, status: unaffected], lessThanOrEqual: 3.6.6, status: affected, version: 0, versionType: patch
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 8.1
baseSeverity: HIGH
confidentialityImpact: LOW
integrityImpact: HIGH
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Baicells recommends that all customers currently running an earlier version of RTS/RTD upgrade their products to the 3.7.11.6 firmware.