Published:2011/05/11  Last Updated:2011/05/13

La Fonera+ vulnerable to denial-of-service (DoS)


La Fonera+ provided by FON contains a denial-of-service (DoS) vulnerability.

Products Affected

  • La Fonera+ firmware version prior to


La Fonera+ provided by FON is a wireless LAN router. La Fonera+ contains a denial-of-service (DoS) vulnerability.


An attacker who can communicate with La Fonera+ directly may cause a denial-of-service (DoS).


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

Vendor Status

Vendor Link
FON FON FAQs (Japanese Only)


JPCERT/CC Addendum

This JVN publication was delayed to 2011/05/11 after the developer fix was developed. From the fiscal year 2011, JPCERT/CC is using a new vendor coordination procedure. This new procedure came from the recommendation of the fiscal year 2010 "Study Group on Information System Vulnerability Handling" aimed at more timely JVN publications.

The method to update is described in the link "FON FAQs (Japanese Only)" under "Vendor Status" section.

Vulnerability Analysis by JPCERT/CC

Analyzed on 2011.05.11

Measures Conditions Severity
Access Required must be attacked from a local segment, such as Ethernet, Bluetooth, and 802.11 attacks
  • Mid-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


Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2011-1326
JVN iPedia JVNDB-2011-000027

Update History

Published in English