Attacker Value
Unknown
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Exploitability
Unknown
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User Interaction
Unknown
Privileges Required
Unknown
Attack Vector
Unknown
0

CVE-2019-12789

Disclosure Date: June 17, 2019
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Description

An issue was discovered on Actiontec T2200H T2200H-31.128L.08 devices, as distributed by Telus. By attaching a UART adapter to the UART pins on the system board, an attacker can use a special key sequence (Ctrl-) to obtain a shell with root privileges. After gaining root access, the attacker can mount the filesystem read-write and make permanent modifications to the device including bricking of the device, disabling vendor management of the device, preventing automatic upgrades, and permanently installing malicious code on the device.

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CVSS V3 Severity and Metrics
Base Score:
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Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
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Attack Vector (AV):
Unknown
Attack Complexity (AC):
Unknown
Privileges Required (PR):
Unknown
User Interaction (UI):
Unknown
Scope (S):
Unknown
Confidentiality (C):
Unknown
Integrity (I):
Unknown
Availability (A):
Unknown

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