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CVE-2017-9478

N/A

Published: July 31, 2017 at 03:00 AM UTC

Updated: June 17, 2026 at 01:28 AM UTC

Products not identified yet· also runs on 1 platform

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Severity

N/A

Exploit prediction

EPSS 2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Dpc3939 · Cisco

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

https://github.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-20.emta-reverse-dns.txt

CVSS

5MEDIUM[email protected]

Confidentiality: PARTIAL
Integrity: NONE
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-200

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