shiromuku(bu2)BBS vulnerable to arbitrary file creation


shiromuku(bu2)BBS from Perl CGI's By Mrs. Shiromuku is a bulletin board software. shiromuku(bu2)BBS contains a vulnerability that may allow a remote attacker to create arbitrary files.

Shoji Baba 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 7.5 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

Perl CGI's By Mrs.Shiromuku
  • shiromuku(bu2)BBS version2.90 and earlier


A remote attacker creating arbitrary files may result in arbitrary code execution on the server.

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

Perl CGI's By Mrs.Shiromuku
CWE (What is CWE?)

  1. Improper Input Validation(CWE-20) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2015-0868

  1. JVN : JVN#94502417
  2. National Vulnerability Database (NVD) : CVE-2015-0868
Revision History

  • [2015/01/23]
      Web page was published
      References : Content was added