JVN#48659722: Smartphone Passbook for Android information management vulnerability

Overview

Smartphone Passbook for Android contains an information management vulnerability.

Smartphone Passbook for Android contains an issue where user inputs are output into a log file.

Other android applications with permissions to read system log files may obtain information entered by a user.

Update the Software
Update to the latest version according to the information provided by the developer.

Vendor	Link
Ogaki Kyoritsu bank Ltd.	Smartphone Passbook - Android Apps on Google Play

Analyzed on 2015.02.13 (CVSS Base Metrics)

What is CVSS?

Measures	Severity			Description
Access Vector(AV)	Local (L)	Adjacent Network (A)	Network (N)	A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable".
Access Complexity(AC)	High (H)	Medium (M)	Low (L)	Specialized access conditions exist.
Authentication(Au)	Multiple (M)	Single (S)	None (N)	Authentication is not required to exploit the vulnerability.
Confidentiality Impact(C)	None (N)	Partial (P)	Complete (C)	There is considerable informational disclosure. Access to some system files is possible, but the attacker does not have control over what is obtained, or the scope of the loss is constrained.
Integrity Impact(I)	None (N)	Partial (P)	Complete (C)	There is no impact to the integrity of the system.
Availability Impact(A)	None (N)	Partial (P)	Complete (C)	There is no impact to the availability of the system.

Base Score:2.6

This analysis assumes that the user is tricked into installing an application to obtain data that the product outputs.

Hiroshi Kumagai reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.