Cybozu Remote Service Manager fails to verify client certificates


Remote Service Manager provided by Cybozu, Inc. is a software to access internal systems such as Cybozu products via "Cybozu Remote Service". Remote Service Manager fails to verify client certificates.

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 4.2 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 4.9 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: Single Instance
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

Cybozu, Inc.
  • Remote Service Manager 3.0.0 to 3.1.4


A user may access internal web systems that do not allow access from external network. As a result, unintended operations may be conducted on those systems.

[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. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2016-7815

  1. JVN : JVN#19241292
  2. National Vulnerability Database (NVD) : CVE-2016-7815
Revision History

  • [2017/01/11]
      Web page was published
      References : Content was added