Published:2014/12/01  Last Updated:2014/12/01

JVN#21907573
SEIL Series routers vulnerable to denial-of-service (DoS)

Overview

SEIL Series routers contain a denial-of-service (DoS) vulnerability.

Note that this vulnerability is different from JVN#04895240.

Products Affected

  • SEIL/X1 2.50 to 4.62
  • SEIL/X2 2.50 to 4.62
  • SEIL/B1 2.50 to 4.62
  • SEIL/x86 Fuji 1.70 to 3.22

Description

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

Impact

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.

Solution

Update the Firmware
Apply the appropriate firmware update provided by the developer.

Vendor Status

Vendor Status Last Update Vendor Notes
Internet Initiative Japan Inc. Vulnerable 2014/12/01 Internet Initiative Japan Inc. website

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2014.12.01 (CVSS Base Metrics)

What is CVSS?

Measures Severity Description
Access Vector(AV) Local (L) Adjacent Network (A) Network (N) A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable".
Access Complexity(AC) High (H) Medium (M) Low (L) Specialized access conditions or extenuating circumstances do not exist.
Authentication(Au) Multiple (M) Single (S) None (N) Authentication is not required to exploit the vulnerability.
Confidentiality Impact(C) None (N) Partial (P) Complete (C) There is no impact to the confidentiality of the system.
Integrity Impact(I) None (N) Partial (P) Complete (C) There is no impact to the integrity of the system.
Availability Impact(A) None (N) Partial (P) Complete (C) There is reduced performance or interruptions in resource availability.

Base Score:5.0

Credit

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2014-7255
JVN iPedia JVNDB-2014-000135