Comcast DPC3939 xfinitywifi Hotspot MAC Address information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Comcast DPC3939. This issue affects some unknown processing of the component xfinitywifi Hotspot. This manipulation causes information disclosure (MAC Address). This vulnerability is tracked as CVE-2017-9477. It is feasible to perform the attack on the physical device. No exploit exists.

Detailsinfo

A vulnerability has been found in Comcast DPC3939 (the affected version is unknown) and classified as problematic. Affected by this vulnerability is an unknown code of the component xfinitywifi Hotspot. The manipulation with an unknown input leads to a information disclosure vulnerability (MAC Address). The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

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 allows remote attackers to discover the CM MAC address by connecting to the device's xfinitywifi hotspot.

The bug was discovered 07/30/2017. The weakness was disclosed 07/31/2017 (Website). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2017-9477 since 06/07/2017. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-104651, VDB-104649, VDB-104648 and VDB-104646 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 2.4
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: MAC Address
Class: Information disclosure / MAC Address
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/07/2017 🔍
07/30/2017 +53 days 🔍
07/30/2017 +0 days 🔍
07/31/2017 +1 days 🔍
07/31/2017 +0 days 🔍
11/02/2019 +824 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2017-9477 (🔍)
GCVE (CVE): GCVE-0-2017-9477
GCVE (VulDB): GCVE-100-104647
See also: 🔍

Entryinfo

Created: 07/31/2017 10:16
Updated: 11/02/2019 13:13
Changes: 07/31/2017 10:16 (57), 11/02/2019 13:13 (1)
Complete: 🔍
Cache ID: 216::103

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