Published:2011/10/28  Last Updated:2011/10/28

Touhou Hisouten vulnerable to denial-of-service


Touhou Hisouten from Twilight Frontier contains a denial-of-service (DoS) vulnerability.

Products Affected

  • Touhou Hisouten Ver1.06 and earlier


Touhou Hisouten from Twilight Frontier is a video game which has an online match mode. Touhou Hisouten contains an issue when processing network traffic, which may result in a denial-of-service (DoS).


A remote attacker may cause an unexpected application termination.


Apply a patch
Apply a patch according to the information provided by the developer.

Vendor Status


JPCERT/CC Addendum

A patch addressing a similar issue for the sister product "Touhou Hisoutensoku" was released on September 22, 2011.

Vulnerability Analysis by JPCERT/CC

Analyzed on 2011.10.28

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 vulnerability can be exploited without an honest user taking any action
  • High
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


Yuma Kurogome 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-2011-3995
JVN iPedia JVNDB-2011-000089