JVN#11877654
百五銀行 (105 BANK) App fails to verify SSL server certificates
Overview
百五銀行 (105 BANK) App fails to verify SSL server certificates.
Products Affected
- 百五銀行 for Android version 1.1, 1.0
- 百五銀行 for iOS version 1.0
Description
百五銀行 (105 BANK) App provided by THE HYAKUGO BANK, LTD. is a mobile app for internet banking. 百五銀行 App fails to verify SSL server certificates.
Impact
A man-in-the-middle attack may allow an attacker to eavesdrop on an encrypted communication.
Solution
Update the Application
Update to the latest version according to the information provided by the developer.
Note that updating is necessary to access any services being provided by the application.
Vendor Status
| Vendor | Status | Last Update | Vendor Notes |
|---|---|---|---|
| THE HYAKUGO BANK, LTD. | Vulnerable | 2016/05/18 | THE HYAKUGO BANK, LTD. website |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
| Attack Vector(AV) | Physical (P) | Local (L) | Adjacent (A) | Network (N) |
|---|---|---|---|---|
| Attack Complexity(AC) | High (H) | Low (L) | ||
| Privileges Required(PR) | High (H) | Low (L) | None (N) | |
| User Interaction(UI) | Required (R) | None (N) | ||
| Scope(S) | Unchanged (U) | Changed (C) | ||
| Confidentiality Impact(C) | None (N) | Low (L) | High (H) | |
| Integrity Impact(I) | None (N) | Low (L) | High (H) | |
| Availability Impact(A) | None (N) | Low (L) | High (H) |
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) |
|---|---|---|---|
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) |
Comment
This analysis assumes a man-in-the-middle attack being conducted by an attacker that places a malicious wireless LAN access point.
Credit
Yuji Tounai of NTT Com Security (Japan) KK reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2016-1210 |
| JVN iPedia |
JVNDB-2016-000065 |