Cybozu Garoon fails to restrict access permission


Cybozu Garoon provided by Cybozu, Inc. contains an improper access restriction.

Jun Kokatsu of KDDI Singapore Dubai Branch reported vulnerability to Cybozu, Inc., and Cybozu, Inc. reported it to JPCERT/CC to notify users of its solution through JVN.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 5.4 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 4.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

Cybozu, Inc.
  • Cybozu Garoon 3.0.0 to 4.2.4


When a logged-in user accesses a specially crafted page, the user may unintentionally lock other users' files.

[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-2017-2144

  1. JVN : JVN#43534286
  2. National Vulnerability Database (NVD) : CVE-2017-2144
Revision History

  • [2017/07/03]
      Web page was published
      References : Content was added