CVE-2017-9478

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421733-160420a-CMCST) and DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) devices sets the CM MAC address to a value with a two-byte offset from the MTA/VoIP MAC address, which indirectly allows remote attackers to discover hidden Home Security Wi-Fi networks by leveraging the embedding of the MTA/VoIP MAC address into the DNS hostname.

El firmware de Comcast en Cisco DPC3939 (versión de firmware dpc3939-P20-18-v303r20421733-160420a-CMCST) y DPC3939 (DPC3939 (DPC3939 ( versión de firmware dpc3939-P20-18-v303r20421746-170221a-CMCST), establece la dirección MAC CM en un valor con un offset de dos bytes de la Dirección MAC MTA/VoIP, que indirectamente permite a los atacantes remotos detectar redes Wi-Fi ocultas de Home Security mediante el aprovechamiento de la inserción de la dirección MAC MTA/VoIP en el nombre de host DNS.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-06-07 CVE Reserved
2017-07-31 CVE Published
2023-03-07 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-20.emta-reverse-dns.txt	2024-08-05

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"	Dpc3939 Firmware Search vendor "Cisco" for product "Dpc3939 Firmware"	dpc3939-p20-18-v303r20421746-170221a-cmcst Search vendor "Cisco" for product "Dpc3939 Firmware" and version "dpc3939-p20-18-v303r20421746-170221a-cmcst"	-	Affected	in	Cisco Search vendor "Cisco"	Dpc3939 Search vendor "Cisco" for product "Dpc3939"	-	-	Safe
Cisco Search vendor "Cisco"	Dpc3939 Firmware Search vendor "Cisco" for product "Dpc3939 Firmware"	dpc3939-p20-18-v303r20421733-160420a-cmcst Search vendor "Cisco" for product "Dpc3939 Firmware" and version "dpc3939-p20-18-v303r20421733-160420a-cmcst"	-	Affected	in	Cisco Search vendor "Cisco"	Dpc3939 Search vendor "Cisco" for product "Dpc3939"	-	-	Safe