KeepKey 4.0.0 Font 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 (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in KeepKey 4.0.0. This vulnerability affects unknown code of the component Font Handler. This manipulation causes information disclosure. This vulnerability is handled as CVE-2018-6875. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in KeepKey 4.0.0 and classified as critical. Affected by this vulnerability is an unknown code of the component Font Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. 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:

Format String vulnerability in KeepKey version 4.0.0 allows attackers to trigger information display (of information that should not be accessible), related to text containing characters that the device's font lacks.

The bug was discovered 03/09/2018. The weakness was released 03/14/2018 (Website). The advisory is shared at keepkey.com. This vulnerability is known as CVE-2018-6875 since 02/09/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

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 $0-$5k.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.4

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

NVD Base Score: 7.5
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

Class: Information disclosure
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/09/2018 🔍
03/09/2018 +28 days 🔍
03/14/2018 +5 days 🔍
03/14/2018 +0 days 🔍
03/15/2018 +1 days 🔍
01/13/2020 +669 days 🔍

Sourcesinfo

Advisory: keepkey.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-6875 (🔍)
GCVE (CVE): GCVE-0-2018-6875
GCVE (VulDB): GCVE-100-114601

Entryinfo

Created: 03/15/2018 07:49
Updated: 01/13/2020 19:15
Changes: 03/15/2018 07:49 (55), 01/13/2020 19:15 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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