CVE-2024-39345: OS Command Injection
AdTran 834-5 HDC17600021F1 (SmartOS 11.1.1.1) devices enable the SSH service by default and have a hidden, undocumented, hard-coded support account whose password is based on the devices MAC address. All of the devices internet interfaces share a similar MAC address that only varies in their final octet. This allows network-adjacent attackers to derive the support user's SSH password by decrementing the final octet of the connected gateway address or via the BSSID. An attacker can then execute arbitrary OS commands with root-level privileges. NOTE: The vendor states that there is no intended functionality allowing an attacker to execute arbitrary OS Commands with root-level privileges. The vendor also states that this issue was fixed in SmartOS 12.5.5.1.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2024-39345?
CVE-2024-39345 is considered a critical vulnerability due to the presence of a hard-coded support account and default SSH service.
How do I fix CVE-2024-39345?
To mitigate CVE-2024-39345, disable the SSH service if not needed, and change the default login credentials immediately.
What devices are affected by CVE-2024-39345?
CVE-2024-39345 affects AdTran 834-5 devices running SmartOS versions up to 12.1.3.1.
What risks are associated with CVE-2024-39345?
CVE-2024-39345 can lead to unauthorized access to the device due to the exposed hard-coded password and enabled SSH service.
Is there a workaround for CVE-2024-39345?
A temporary workaround for CVE-2024-39345 includes disabling remote SSH access and restricting network access to the device.