Internet Initiative Japan SEIL/X1, SEIL/X2, and SEIL/B1 firmware 2.30 through 2.51, when NAT is enabled, allows remote attackers to cause a denial of service (system restart) via crafted GRE packets.Referenceshttp://www.vupen.com/english/advisories/2009/3111http://www.seil.jp/seilseries/security/2009/a00674.phphttp://osvdb.org/59361http://jvndb.jvn.jp/en/contents/2009/JVNDB-2009-000070.htmlhttp://jvn.jp/en/jp/JVN13011682/index.htmlhttps://exchange.xforce.ibmcloud.com/vulnerabilities/54050http://secunia.com/advisories/37154
