Published:2011/03/02  Last Updated:2011/03/02

Multiple Things CGI products vulnerable to cross-site scripting


Multiple CGI products provided by Things contain a cross-site scripting vulnerability.

Products Affected

  • BBS version 2.0.2 and earlier
  • BBS Thread version 2.0.2 and earlier


BBS and BBS Thread provided by Things are bulletin board software. BBS and BBS Thread contain a cross-site scripting vulnerability.


An arbitrary script may be executed on the user's web browser.


Update the software
Update to the latest version according to the information provided by the developer.

This issue was resolved in the following versions:

  • BBS version 2.0.3
  • BBS Thread version 2.0.3


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2011.03.02

Measures Conditions Severity
Access Required can be attacked over the Internet using packets
  • High
Authentication anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required the user must be convinced to take a standard action that does not feel harmful to most users, such as click on a link or view a file
  • Mid
Exploit Complexity the user must be convinced to take a difficult or suspicious action. If the honest user must have elevated privileges, they are likely to be more suspiciouse
  • High

Description of each analysis measures


Yuji Tounai of reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2011-0455
JVN iPedia JVNDB-2011-000015

Update History

JVN iPedia link was added in the "Other Information" section.