Cybozu Garoon vulnerable to directory traversal


Cybozu Garoon provided by Cybozu, Inc. contains a directory traversal vulnerability (CWE-22) due to a flaw in processing of the session information.

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.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 6.4 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 5.5 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: Single Instance
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

Cybozu, Inc.
  • Cybozu Garoon 3.5.0 to 4.6.3


A user who can login to the product may obtain or alter arbitrary files on the server.

[Apply the Patch]
Apply the patch according to the information provided by the developer.

[Updated on 2019 April 22]
[Update the Software]
Update to the latest version according to the information provided by the developer.
According to developer, this vulnerability was addressed in Cybozu Garoon 4.10.0.
Vendor Information

Cybozu, Inc.
CWE (What is CWE?)

  1. Path Traversal(CWE-22) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2018-0673

  1. JVN : JVN#12583112
  2. National Vulnerability Database (NVD) : CVE-2018-0673
Revision History

  • [2018/09/10]
      Web page was published
  • [2019/04/22]
      Solution was modified
  • [2019/07/26]
      References : Content was added