Published:2009/10/28  Last Updated:2009/11/02

SEIL/X Series and SEIL/B1 denial of service vulnerability


SEIL/X Series and SEIL/B1 contain a denial of service (DoS) vulnerability.

Products Affected

  • SEIL/X1 firmware 2.30 to 2.51
  • SEIL/X2 firmware 2.30 to 2.51
  • SEIL/B1 firmware 2.30 to 2.51


SEIL/X Series and SEIL/B1 are routers. SEIL/X Series and SEIL/B1 contain an issue in the processing by the NAT function, which may lead to a denial of service (DoS) vulnerability.


When processing a specially crafted packet, a remote attacker may cause a denial of service.


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

Vendor Status

Vendor Status Last Update Vendor Notes
Internet Initiative Japan Inc. Vulnerable 2009/10/28


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2009.10.28

Measures Conditions Severity
Access Required Routed - can be attacked over the Internet using packets
  • High
Authentication None - anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required None - the vulnerability can be exploited without an honest user taking any action
  • High
Exploit Complexity Low-Medium - some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls)
  • Medium-High

Description of each analysis measures


Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2009-4293
JVN iPedia JVNDB-2009-000070

Update History