Google Home/Chromecast API Service JSON Data DNS Rebinding information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Google Home and Chromecast. The impacted element is an unknown function of the component API Service. This manipulation as part of JSON Data causes information disclosure (DNS Rebinding). This vulnerability appears as CVE-2018-12716. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Google Home and Chromecast (Web Browser) (affected version not known). Affected by this vulnerability is some unknown functionality of the component API Service. The manipulation as part of a JSON Data leads to a information disclosure vulnerability (DNS Rebinding). 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, integrity, and availability. The summary by CVE is:

The API service on Google Home and Chromecast devices before mid-July 2018 does not prevent DNS rebinding attacks from reading the scan_results JSON data, which allows remote attackers to determine the physical location of most web browsers by leveraging the presence of one of these devices on its local network, extracting the scan_results bssid fields, and sending these fields in a geolocation/v1/geolocate Google Maps Geolocation API request.

The bug was discovered 06/19/2018. The weakness was presented 06/25/2018 (Website). It is possible to read the advisory at krebsonsecurity.com. This vulnerability is known as CVE-2018-12716 since 06/24/2018. The exploitation appears to be easy. The attack can be launched remotely. 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.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
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: DNS Rebinding
Class: Information disclosure / DNS Rebinding
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/19/2018 🔍
06/24/2018 +4 days 🔍
06/24/2018 +0 days 🔍
06/25/2018 +1 days 🔍
06/25/2018 +0 days 🔍
02/21/2020 +606 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: krebsonsecurity.com
Status: Not defined

CVE: CVE-2018-12716 (🔍)
GCVE (CVE): GCVE-0-2018-12716
GCVE (VulDB): GCVE-100-119863

Entryinfo

Created: 06/25/2018 21:51
Updated: 02/21/2020 17:20
Changes: 06/25/2018 21:51 (59), 02/21/2020 17:20 (1)
Complete: 🔍
Cache ID: 216::103

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