BlackJumboDog authentication bypass vulnerability


BlackJumboDog from SapporoWorks contains an authentication bypass vulbnerability.

BlackJumboDog from SapporoWorks is a software that provides server functions for an intranet. BlackJumboDog contains an authentication bypass vulnerability.

Tsuyoshi Ishibashi of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V2 Severity:
Base Metrics 5.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: None
Affected Products

  • BlackJumboDog Ver4.2.2 and earlier


A remote attacker can bypass authentication of BlackJumboDog. As a result, the attacker gains access to the server and information may be disclosed.

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

CWE (What is CWE?)

  1. Improper Authentication(CWE-287) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2008-5721

  1. JVN : JVN#98063934
  2. National Vulnerability Database (NVD) : CVE-2008-5721
  3. JVN iPedia (Japanese) : JVNDB-2008-000086
Revision History

  • [2008/12/25]
      Web page published