Published:2007/10/12  Last Updated:2008/05/21

AirStation series and BroadStation series vulnerable to cross-site request forgery


Buffalo's AirStation Series and BroadStation Series routers are vulnerable to cross-site request forgery.

Products Affected

  • WZR-RS-G54 firmware Ver.2.46 and earlier
  • WZR-RS-G54HP firmware Ver.2.43 and earlier
  • WHR2-G54V firmware Ver.2.42 and earlier
  • BHR-4RV firmware Ver.2.48 and earlier


Buffalo's AirStation series and BroadStation series routers have a web administration interface that can be accessed from a web browser to configure their functional settings. The web administration interface is vulnerable to cross-site request forgery.


If the administrator of such a product logs into the web administration interface and views a malicious website, an attacker could change the password or other settings.


Update the Software
Apply firmware upgrades for each product.

Vendor Status

Vendor Status Last Update Vendor Notes
BUFFALO INC. Vulnerable 2007/10/29


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2007.10.12

Measures Conditions Severity
Access Required Routed - can be attacked over the Internet using packets
  • High
Authentication None - anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required Simple - 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
  • Medium
Exploit Complexity Low - little to no expertise and/or luck required to exploit (cross-site scripting)
  • High

Description of each analysis measures


Sen UENO of Tricorder Co.Ltd. reported this vulnerability to IPA.
JPCERT/CC coordinated with the vendors under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
JVN iPedia JVNDB-2007-000875

Update History