Published:2018/11/16 Last Updated:2018/11/16
JVNVU#91640357
みずほ銀行 みずほダイレクトアプリ for Android fails to verify SSL server certificates
Overview
みずほ銀行 みずほダイレクトアプリ for Android fails to verify SSL server certificates.
Products Affected
- みずほ銀行 みずほダイレクトアプリ for Android version 3.13.0 and earlier
Description
みずほ銀行 みずほダイレクトアプリ for Android provided by Mizuho Bank, Ltd. fails to verify SSL server certificates (CWE-295).
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.
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
CVSS v3
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score:
4.8
| 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) |
CVSS v2
AV:N/AC:H/Au:N/C:P/I:P/A:N
Base Score:
4.0
| 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) |
Credit
Reo Yoshida reported this vulnerability to JPCERT/CC.
JPCERT/CC coordinated with the developer.
Other Information
| JPCERT Alert | |
| JPCERT Reports | |
| CERT Advisory | |
| CPNI Advisory | |
| TRnotes | |
| CVE |
CVE-2018-16179 |
| JVN iPedia |