[Japanese]

JVNDB-2016-000101

ETX-R vulnerable to denial-of-service (DoS)

Overview

ETX-R provided by I-O DATA DEVICE, INC. is a wired LAN router. ETX-R contains a denial-of-service (DoS) vulnerability.

Junichi MURAKAMI of FFRI, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 5.3 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 5.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Partial
Affected Products


I-O DATA DEVICE, INC.
  • ETX-R

Impact

A remote unauthenticated attacker may cause the web server on the product to be terminated abnormally.
Solution

[Apply a Workaround]
The following workarounds may mitigate the affects of this vulnerability.

* Enable the option "Disable WAN side ping reply"

According to the developer, the option "Disable WAN side ping reply" is enabled by default.
Note that these workarounds above do not prevent access from local networks.
Vendor Information

I-O DATA DEVICE, INC.
CWE (What is CWE?)

  1. Improper Input Validation(CWE-20) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2016-4821
References

  1. JVN : JVN#96052093
  2. National Vulnerability Database (NVD) : CVE-2016-4821
Revision History

  • [2016/06/14]
      Web page was published
    [2016/06/23]
      References : Content was added

Date Public2016/06/14
Date First Published2016/06/14
Date Last Updated2016/06/23