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Japan Vulnerability NotesJVN:11994518

HistoryMay 16, 2016 - 12:00 a.m.

JVN#11994518: Cybozu KUNAI App fails to verify SSL server certificates

2016-05-1600:00:00

Japan Vulnerability Notes

jvn.jp

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS3

6.8

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

EPSS

0.002

Percentile

59.2%

JSON

Cybozu KUNAI App provided by Cybozu, Inc. 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 Software
Update to the latest version according to the information provided by the developer.

Products Affected

Cybozu KUNAI for iPhone 2.0.3 to 3.1.5
Cybozu KUNAI for Android 2.1.2 to 3.0.4

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS3

6.8

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

EPSS

0.002

Percentile

59.2%

JSON

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