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CVE-2016-4839

5.5 · MEDIUM

The Android Apps Money Forward (prior to v7.18.0), Money Forward for The Gunma Bank (prior to v1.2.0), Money Forward for SHIGA BANK (prior to v1.2.0), Money Forward for SHIZUOKA BANK (prior to v1.4…

Published May 12, 2017CWE-200EPSS 1.66%

Overview

CVE-2016-4839 is a medium-severity vulnerability. It was published on May 12, 2017 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

The Android Apps Money Forward (prior to v7.18.0), Money Forward for The Gunma Bank (prior to v1.2.0), Money Forward for SHIGA BANK (prior to v1.2.0), Money Forward for SHIZUOKA BANK (prior to v1.4.0), Money Forward for SBI Sumishin Net Bank (prior to v1.6.0), Money Forward for Tokai Tokyo Securities (prior to v1.4.0), Money Forward for THE TOHO BANK (prior to v1.3.0), Money Forward for YMFG (prior to v1.5.0) provided by Money Forward, Inc. and Money Forward for AppPass (prior to v7.18.3), Money Forward for au SMARTPASS (prior to v7.18.0), Money Forward for Chou Houdai (prior to v7.18.3) provided by SOURCENEXT CORPORATION do not properly implement the WebView class, which allows an attacker to disclose information stored on the device via a specially crafted application.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refcorp.moneyforward.com/info/20160920-mf-android/Refwww.securityfocus.com/bid/93035Refwww.sourcenext.com/support/i/160725_1Refjvn.jp/en/jp/JVN61297210/index.htmlRefcorp.moneyforward.com/info/20160920-mf-android/Refwww.securityfocus.com/bid/93035Refwww.sourcenext.com/support/i/160725_1Refjvn.jp/en/jp/JVN61297210/index.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-4839?

CVE-2016-4839 is a medium-severity vulnerability. It was published on May 12, 2017 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2016-4839?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2016-4839?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2016-4839?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-4839 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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