Published:2016/02/15  Last Updated:2016/02/15

JVN#47296923
Cybozu Office vulnerable to information disclosure

Overview

Cybozu Office contains an information disclosure vulnerability.

Note that this vulnerability is different from JVN#28042424.

Products Affected

  • Cybozu Office 9.0.0 to 10.3

Description

Cybozu Office contains an information disclosure vulnerability.

Impact

If a user views a malicious page while logged in, token used for cross-site request forgery (CSRF) protection may be disclosed. As a result, an attacker who obtains the CSRF token can perform further attacks.

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 2016/02/15 Cybozu, Inc. website

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Base Score: 4.3
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:N/A:N
Base Score: 2.6
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

Cybozu, Inc. reported this vulnerability 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-2015-8487
JVN iPedia JVNDB-2016-000022