Current Description
The Zyxel Multy X (AC3000 Tri-Band WiFi System) device doesn't use a suitable mechanism to protect the UART. After an attacker dismantles the device and uses a USB-to-UART cable to connect the device, he can use the 1234 password for the root account to login to the system. Furthermore, an attacker can start the device's TELNET service as a backdoor.
Source:
MITRE
View Analysis Description
Analysis Description
The Zyxel Multy X (AC3000 Tri-Band WiFi System) device doesn't use a suitable mechanism to protect the UART. After an attacker dismantles the device and uses a USB-to-UART cable to connect the device, he can use the 1234 password for the root account to login to the system. Furthermore, an attacker can start the device's TELNET service as a backdoor.
Source:
MITRE
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
6.8 MEDIUM
Vector:
AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
(V3.0 legend)
Impact Score:
5.9
Exploitability Score:
0.9
Attack Vector (AV):
Physical
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
CVSS v2.0 Severity and Metrics:
Base Score:
7.2 HIGH
Vector:
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
(V2 legend)
Impact Subscore:
10.0
Exploitability Subscore:
3.9
Access Vector (AV):
Local
Access Complexity (AC):
Low
Authentication (AU):
None
Confidentiality (C):
Complete
Integrity (I):
Complete
Availability (A):
Complete
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service
References to Advisories, Solutions, and Tools
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Technical Details
Vulnerability Type
(View All)
- Use of Hard-coded Credentials (CWE-798)
Change History
2 change records found
- show changes
Reanalysis -
3/14/2019 10:01:26 AM
| Action |
Type |
Old Value |
New Value |
| Changed |
CVSS V2 |
(AV:N/AC:L/Au:N/C:C/I:C/A:C) |
(AV:L/AC:L/Au:N/C:C/I:C/A:C) |
| Changed |
CVSS V3 |
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Initial Analysis -
5/15/2018 11:32:49 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
AND
OR
*cpe:2.3:o:zyxel:ac3000_firmware:-:*:*:*:*:*:*:*
OR
cpe:2.3:h:zyxel:ac3000:-:*:*:*:*:*:*:* |
| Added |
CVSS V2 |
|
(AV:N/AC:L/Au:N/C:C/I:C/A:C) |
| Added |
CVSS V3 |
|
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Added |
CWE |
|
CWE-798 |
| Changed |
Reference Type |
https://www.slideshare.net/secret/qrHwDOJ71eLg7f No Types Assigned |
https://www.slideshare.net/secret/qrHwDOJ71eLg7f Exploit, Third Party Advisory |