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TITLE:
8e6 R3000 "Host" URL Filter Bypass Vulnerability

SECUNIA ADVISORY ID:
SA31391

VERIFY ADVISORY:
http://secunia.com/advisories/31391/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
>From local network

OPERATING SYSTEM:
8e6 R3000 Internet Filter
http://secunia.com/product/14360/

DESCRIPTION:
nnposter has reported a vulnerability in 8e6 R3000 Internet Filter,
which can be exploited by malicious people to bypass certain security
restrictions.

The vulnerability is caused due an error in the URL filter when
processing custom HTTP headers. This can be exploited to bypass the
URL filter via a custom HTTP header containing the string "Host:"
followed by an unrestricted site.

The vulnerability is reported in version 2.0.12.10. Other versions
may also be affected.

SOLUTION:
This will reportedly be fixed in R3000 patch version 2.1.05.

PROVIDED AND/OR DISCOVERED BY:
nnposter

ORIGINAL ADVISORY:
http://archives.neohapsis.com/archives/bugtraq/2008-08/0035.html

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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