Access restriction bypass to delete DBM files in Cybozu Dezie


Cybozu Dezie provided by Cybozu,Inc. contains an access restriction bypass vulnerability to delete DBM (Cybozu Dezie proprietary format) files.

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

Cybozu, Inc.
  • Cybozu Dezie 8.0.0 to 8.1.1


An unauthenticated attacker may delete an arbitrary DBM file.

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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-2016-7833

  1. JVN : JVN#16781735
  2. National Vulnerability Database (NVD) : CVE-2016-7833
Revision History

  • [2016/12/12]
      Web page was published
      References : Content was added