Cybozu Office fails to restrict access permission in the file export function in "customapp"


Cybozu Office contains an access restriction flaw in the file export function in "customapp".

Cybozu, Inc. reported this vulnerabilities to JPCERT/CC to notify users of its solution through JVN. JPCERT/CC and Cybozu, Inc. coordinated under the Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 4.3 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: None
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 4.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: Single Instance
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: None
Affected Products

Cybozu, Inc.
  • Cybozu Office 10.0.0 to 10.5.0


Information of "customapp" may be obtained by the other logged-in user.

[Update the Software]
Update to the latest version according to the information provided by the developer.
Vendor Information

Cybozu, Inc.
CWE (What is CWE?)

  1. Permissions(CWE-264) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2017-2115

  1. JVN : JVN#17535578
  2. National Vulnerability Database (NVD) : CVE-2017-2115
Revision History

  • [2017/04/11]
      Web page was published
      References : Content was added