Current Description
The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) and DPC3941T (firmware version DPC3941_2.5s3_PROD_sey) devices allows remote attackers to access the web UI by establishing a session to the wan0 WAN IPv6 address and then entering unspecified hardcoded credentials. This wan0 interface cannot be accessed from the public Internet.
Source:
MITRE
View Analysis Description
Analysis Description
The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) and DPC3941T (firmware version DPC3941_2.5s3_PROD_sey) devices allows remote attackers to access the web UI by establishing a session to the wan0 WAN IPv6 address and then entering unspecified hardcoded credentials. This wan0 interface cannot be accessed from the public Internet.
Source:
MITRE
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
8.8 HIGH
Vector:
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
(V3 legend)
Impact Score:
5.9
Exploitability Score:
2.8
Attack Vector (AV):
Adjacent
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:
5.8 MEDIUM
Vector:
(AV:A/AC:L/Au:N/C:P/I:P/A:P)
(V2 legend)
Impact Subscore:
6.4
Exploitability Subscore:
6.5
Access Vector (AV):
Local_Network
Access Complexity (AC):
Low
Authentication (AU):
None
Confidentiality (C):
Partial
Integrity (I):
Partial
Availability (A):
Partial
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
1 change record found
- show changes
Initial Analysis -
8/2/2017 11:44:43 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
AND
OR
*cpe:2.3:o:cisco:dpc3939_firmware:dpc3939-p20-18-v303r20421746-170221a-cmcst:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:dpc3939:-:*:*:*:*:*:*:* |
| Added |
CPE Configuration |
|
AND
OR
*cpe:2.3:o:cisco:dpc3941t_firmware:dpc3941_2.5s3_prod_sey:*:*:*:*:*:*:*
OR
cpe:2.3:h:cisco:dpc3941t:-:*:*:*:*:*:*:* |
| Added |
CVSS V2 |
|
(AV:A/AC:L/Au:N/C:P/I:P/A:P) |
| Added |
CVSS V3 |
|
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Added |
CWE |
|
CWE-798 |
| Changed |
Reference Type |
https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-31.stb-remote-webui.txt No Types Assigned |
https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-31.stb-remote-webui.txt Exploit, Third Party Advisory |