Published:2011/10/11  Last Updated:2011/10/25

WEB FORUM vulnerable to cross-site scripting


WEB FORUM provided by KENT-WEB contains a cross-site scripting vulnerability.

Products Affected

  • WEB FORUM prior to 5.1


WEB FORUM provided by KENT-WEB is a bulletin board software. WEB FORUM contains a vulnerability in processing the web page to be output, which may result in cross-site scripting.


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.

Vendor Status

Vendor Link
WebCreate Ltd WEB FORUM (Japanese only)


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2011.10.11

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 some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls)
  • Mid-High

Description of each analysis measures


ISHIBASHI,Tsuyoshi of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the vendor under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2011-3383
JVN iPedia JVNDB-2011-000080

Update History

Information under "Products Affected" was updated.