Published:2011/11/04  Last Updated:2011/11/04

Opengear console servers vulnerable to authentication bypass


Opengear console servers contains an authentication bypass vulnerability.

Products Affected

  • Opengear console server firmware versions prior to 2.2.1
Console servers that use the above firmware versions are vulnerable.


Opengear console servers are for managing servers and network products. Opengear console servers contain an authentication bypass vulnerability.


A remote attacker may change the settings in the Opengear console server or gain access to products that are connected to the console server.


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

According to the developer, this vulnerability was addressed in firmware version 2.2.1.

Vendor Status

Vendor Link
Opengear Opengear Console Servers


JPCERT/CC Addendum

This JVN publication was delayed to 2011/11/04 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.

Vulnerability Analysis by JPCERT/CC

Analyzed on 2011.11.04

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 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


Tadayoshi Nakahira 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-2011-3997
JVN iPedia JVNDB-2011-000096