JVN#75851252: "Honda Moto LINC" App for Android fails to verify SSL server certificates

Overview

"Honda Moto LINC" App for Android fails to verify SSL server certificates.

"Honda Moto LINC" App for Android fails to verify SSL server certificates.

A man-in-the-middle attack may allow an attacker to eavesdrop on an encrypted communication.

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

Vendor	Status	Last Update	Vendor Notes
Honda Motor Co., Ltd.	Vulnerable	2015/05/15

Analyzed on 2015.05.15 (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)	Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.
Availability Impact(A)	None (N)	Partial (P)	Complete (C)	There is no impact to the availability of the system.

Base Score:4.0

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