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(Vulnerability Assessment Remediation Management)  

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TITLE:
SEIL Routers Denial of Service and Buffer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA37154

VERIFY ADVISORY:
http://secunia.com/advisories/37154/

DESCRIPTION:
Some vulnerabilities have been reported in the SEIL/X1, X2, and B1
routers, which can be exploited by malicious people to cause a DoS
(Denial of Service) and compromise a vulnerable system.

1) An error exists when processing of certain GRE packets. This can
be exploited to cause the device to restart by sending certain
specially crafted GRE packets.

Note: Successful exploitation requires that the NAT functionality is
enabled.

2) A buffer overflow error exists within the URL filtering
functionality. This can be exploited to cause a buffer overflow and
potentially execute arbitrary code by tricking a user into visiting a
specially crafted website.

Vulnerability #1 is reported in SEIL/X1, X2, and B1 version 2.30 to
2.51 and vulnerability #2 is reported in SEIL/X1, X2, and B1 version
2.40 to 2.51.

SOLUTION:
Update to version 2.52.

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
1) http://jvn.jp/jp/JVN13011682/index.html
http://www.seil.jp/seilseries/security/2009/a00674.php

2) http://jvn.jp/jp/JVN06362164/index.html
http://www.seil.jp/seilseries/security/2009/a00669.php

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