Published:2016/10/03  Last Updated:2016/10/03

JVN#07148816
Multiple access restriction bypass vulnerabilities in Cybozu Office

Overview

Cybozu Office contains multiple access restriction bypass vulnerabilities.

Products Affected

  • Cybozu Office 9.0.0 to 10.4.0

Description

Cybozu Office contains multiple access restriction bypass vulnerabilities below.
 

  • Access restriction bypass in the "Project" function - CVE-2016-4867
    CVSS v3 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Base Score: 4.3
    CVSS v2 AV:N/AC:L/Au:S/C:P/I:N/A:N Base Score: 4.0
  • Browse restriction bypass in the breadcrumb trail - CVE-2016-4872
    CVSS v3 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Base Score: 4.3
    CVSS v2 AV:N/AC:L/Au:S/C:P/I:N/A:N Base Score: 4.0
  • Operation restriction bypass in the "Project" function - CVE-2016-4873
    CVSS v3 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Base Score: 4.3
    CVSS v2 AV:N/AC:L/Au:S/C:N/I:P/A:N Base Score: 4.0

Impact

A user may view the information in closed projects. (CVE-2016-4867)
A user may view the names of closed projects. (CVE-2016-4872)
A user may alter the project information which the user does not have permission to access. (CVE-2016-4873)

Solution

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

Vendor Status

Vendor Status Last Update Vendor Notes
Cybozu, Inc. Vulnerable 2016/10/03 Cybozu, Inc. website

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Credit

Cybozu, Inc. reported CVE-2016-4867 and 2016-4872 vulnerabilities to JPCERT/CC to notify users of its solution through JVN.
Yuji Tounai reported CVE-2016-4873 vulnerability to Cybozu, Inc., and Cybozu, Inc. reported it to JPCERT/CC to notify users of its solution through JVN.
JPCERT/CC and Cybozu, Inc. coordinated under the Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2016-4867
CVE-2016-4872
CVE-2016-4873
JVN iPedia JVNDB-2016-000187
JVNDB-2016-000188
JVNDB-2016-000189