SEIL Series routers vulnerable to denial-of-service (DoS)


SEIL Series routers provided by Internet Initiative Japan Inc. contain a denial-of-service (DoS) vulnerability due to an issue in processing NTP requests.

Note that this vulnerability is different from JVN#04895240.
CVSS Severity (What is CVSS?)

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

Internet Initiative Japan Inc.
  • SEIL/B1 2.50 to 4.62
  • SEIL/X1 2.50 to 4.62
  • SEIL/X2 2.50 to 4.62
  • SEIL/x86 Fuji 1.70 to 3.22


By receiving a large volume of NTP request in a short time, the device might continue sending response packets. As a result, the device's resource may be consumed or the device may be exploited in a DDoS attack.

[Update the Firmware]
Apply the appropriate firmware update provided by the developer.
Vendor Information

Internet Initiative Japan Inc.
CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2014-7255

  1. JVN : JVN#21907573
  2. National Vulnerability Database (NVD) : CVE-2014-7255
Revision History

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