Published:2013/07/16  Last Updated:2013/07/17

JVN#19491840
Cybozu Office session management vulnerability

Overview

Cybozu Office contains a vulnerability in session management.

Products Affected

  • Cybozu Office 9.1.0 and earlier

Description

Cybozu Office is a groupware. Cybozu Office contains a vulnerability in session management.

Impact

A third-party that obtains the URL for a login may impersonate a user and access the product. As a result information may be altered or disclosed.

Solution

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

Vendor Status

Vendor Link
Cybozu, Inc. Cybozu Office 9 Package version 9.1.0 changes

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2013.07.16

Measures Conditions Severity
Access Required can be attacked over the Internet using packets
  • High
Authentication anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required the vulnerability can be exploited without an honest user taking any action
  • High
Exploit Complexity expertise and/or luck required (guessing correctly in medium-sized space, kernel expertise)
  • Low-Mid

Description of each analysis measures

Credit

Ooi Keita reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2013-3656
JVN iPedia JVNDB-2013-000069

Update History

2013/07/17
Information under the section "Vendor Status" was modified.