VDB-100671 · CVE-2017-2109 · BID 96844

Cybozu KUNAI up to 3.0.4 on Android Log 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.
3.4	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Cybozu KUNAI up to 3.0.4 on Android. Affected is an unknown function of the component Log Handler. Performing a manipulation results in information disclosure. This vulnerability is identified as CVE-2017-2109. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Cybozu KUNAI up to 3.0.4 on Android (Android App Software). It has been classified as problematic. This affects an unknown code of the component Log Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

Cybozu KUNAI for Android 3.0.4 to 3.0.5.1 allow remote attackers to obtain log information through a malicious Android application.

The bug was discovered 03/13/2017. The weakness was released 04/28/2017 by Kusano Kazuhiko (Website). It is possible to read the advisory at jvn.jp. This vulnerability is uniquely identified as CVE-2017-2109 since 12/01/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. 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 46 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.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 96844†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Android App Software

Vendor

Cybozu

Name

KUNAI

Version

License

commercial

Website

Vendor: https://cybozu-global.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.4
VulDB Meta Temp Score: 3.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 2.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/01/2016 🔍
03/13/2017 +102 days 🔍
03/13/2017 +0 days 🔍
04/28/2017 +46 days 🔍
04/28/2017 +0 days 🔍
04/28/2017 +0 days 🔍
12/21/2020 +1333 days 🔍

Sourcesinfo

Vendor: cybozu-global.com

Advisory: jvn.jp
Researcher: Kusano Kazuhiko
Status: Not defined

CVE: CVE-2017-2109 (🔍)
GCVE (CVE): GCVE-0-2017-2109
GCVE (VulDB): GCVE-100-100671
SecurityFocus: 96844 - Cybozu KUNAI CVE-2017-2109 Information Disclosure Vulnerability
OSVDB: - CVE-2017-2109 - Cybozu - Kunai - Low

scip Labs: https://www.scip.ch/en/?labs.20130704

Entryinfo

Created: 04/28/2017 23:47
Updated: 12/21/2020 17:38
Changes: 04/28/2017 23:47 (50), 09/22/2020 06:55 (6), 12/21/2020 17:38 (12)
Complete: 🔍
Cache ID: 216::103